Journal articles: 'PAPR (Peak to Average Power Ratio)'

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Wirastuti, N. M. A. E. D. "Understanding Peak Average Power Ratio in VFFT-OFDM Systems." Applied Mechanics and Materials 776 (July 2015): 419–24. http://dx.doi.org/10.4028/www.scientific.net/amm.776.419.

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This paper describes an impairment commonly encountered in an OFDM system that must be considered in the design that is peak average power ratio (PAPR). In these studies, a statistical approach to analysing PAPR is suggested. The PAPR statistics of OFDM and VFFT-OFDM are studied by simulation of the statistical distribution of the quantity that is the Complementary Cumulative Distribution Function (CCDF) of the PAPR. The simulation results show that the simulated CCDF of PAPR, the 1% PAPR of OFDM is about 11.40 dB, whereas for VFFT-OFDM this rises to less than 3% of the time. Simulations show that by employing VFFT in OFDM system results in a 0.55 dB deterioration in the PAPR 1% of time.

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Bhukra, Ms Sonia. "Peak to Average Power Ratio (PAPR) Reduction in OFDM." International Journal for Research in Applied Science and Engineering Technology 7, no. 8 (August 31, 2019): 510–15. http://dx.doi.org/10.22214/ijraset.2019.8072.

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Zhu, Xiao Long. "Research on Suppression Technology of OFDM Peak-to-Average Power Ratio." Applied Mechanics and Materials 160 (March 2012): 154–58. http://dx.doi.org/10.4028/www.scientific.net/amm.160.154.

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OFDM has a high peak to average power ratio ( PAPR ), when the signal PAPR over power amplifier ( HPA ) linear dynamic range, will introduce nonlinear distortion, affecting the signal transmission performance. In order to overcome the defects, OFDM need to adopt the corresponding PAPR suppression technique, the signal amplitude changes of power amplifiers in the allowable range. This paper presents a new partial transmit sequence algorithm ( PTS ), double phase sequence reversal threshold algorithm, and simulation results show that the new algorithm on the PAPR suppression effectiveness, search depth of T, the inhibition on PAPR performance.

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Tabassum, Saadia, Sajjad Hussain, and Abdul Ghafoor. "Peak to Average Power Ratio Reduction in NC–OFDM Systems." Journal of Electrical Engineering 66, no. 3 (May 1, 2015): 154–58. http://dx.doi.org/10.2478/jee-2015-0024.

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Abstract Non contiguous orthogonal frequency division multiplexing (NC-OFDM) is an efficient and adaptable multicarrier modulation scheme to be used in cognitive radio communications. However like OFDM, NC-OFDM also suffers from the main drawback of high peak to average power ratio (PAPR). In this paper PAPR has been reduced by employing three different trigonometric transforms. Discrete cosine transform (DCT), discrete sine transform (DST) and fractional fourier transform (FRFT) has been combined with conventional selected level mapping (SLM) technique to reduce the PAPR of both OFDM and NC-OFDM based systems. The method combines all the transforms with SLM in different ways. Transforms DCT, DST and FRFT have been applied before the SLM block or inside the SLM block before IFFT. Simulation results show the comparative analysis of all the transforms using SLM in case of both OFDM and NC-OFDM based systems.

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Fang, Hao, and Wan Hua Wei. "Research on Peak-to-Average Power Ratio for OFDM System." Advanced Materials Research 823 (October 2013): 366–69. http://dx.doi.org/10.4028/www.scientific.net/amr.823.366.

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OFDM is a special multi-carrier modulation, its basic idea is to make high-speed transmission of data flow through the serial-parallel conversion and make it to be the low-speed transmission of data flow in a number of narrow-band orthogonal sub-channels. However, a major drawback of OFDM signals is their high Peak-to-Average Power Ratio (PAPR), which makes the inter modulation distortion occur due to the nonlinearity of the high power amplifier. The distortion severely deteriorates the performance of the OFDM systems. According the problems mentioned above, this dissertation focuses on the reducing the PAPR algorithms design for OFDM systems, such as SLM and PTS. In summary, this paper has completed the OFDM system simulation with Matlab and analyses the result.

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Zhang, Rui, and Zhi Bin Zeng. "Simulation on PAPR Suppression Algorithm for Multicarrier System." Applied Mechanics and Materials 596 (July 2014): 794–98. http://dx.doi.org/10.4028/www.scientific.net/amm.596.794.

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The main disadvantage of multicarrier system is the high peak-to-average power ratio which can easily result in significant cut-the-top distortion of power amplifier. However, the power efficiency of power amplifier will be reduced by power back-off technology. Therefore, crest factor reduction is important in reducing the peak-to-average power ratio of multicarrier system and improving the efficiency of power amplifier. The peak-to-average power ratio can be effectively reduced with small distortion by the algorithm of crest factor reduction based on peak cancellation. And the performance of peak-to-average power ratio is better with the same error vector magnitude.

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Yu, Bing Yan, and Hong Ming Zhang. "Peak-to-Average Power Ratio Distribution of OFDM Visible Light Communication Systems." Applied Mechanics and Materials 519-520 (February 2014): 987–90. http://dx.doi.org/10.4028/www.scientific.net/amm.519-520.987.

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This paper studies the Peak-to-Average Power Ratio (PAPR) distribution in orthogonal frequency division multiplexing (OFDM) signal of visible light communication (VLC) systems with intensity modulation direct detection (IM/DD). In this paper, a closed form expression of PAPR distribution in OFDM-VLC signals is derived, with unequal power allocation to subcarriers is considered. Simulation with different number of subcarriers is conducted. The numerical results show the proposed distribution expression matches well with the result obtained by simulation.

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Das, Diptadeep. "Peak to Average Power Ratio Reduction in OFDM Using Pulse Shaping Technique." Computer Engineering and Applications Journal 5, no. 2 (June 23, 2016): 57–64. http://dx.doi.org/10.18495/comengapp.v5i2.169.

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Orthogonal Frequency Division Multiplexing (OFDM) is a special type of multicarrier modulation in which a signal is split into several narrowband channels at different frequencies. Here data is divided into parallel data streams each transmitted on a separate band. One of the major drawbacks of multicarrier transmission is the high peak-to-average power ratio (PAPR) of the transmit signal. Nyquist filters provide ISI-free transmission. In this paper we are going to propose some new filters which can formulated in an effort to reduce the peak-to-average power ratio (PAPR) of the baseband signal. While maintaining the same excess bandwidth and the zero inter-symbol interference condition. The proposed filters contain various parameters which gives an additional degree of freedom to minimize PAPR for a given roll-off factor Î± .

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Franczyk, Anna, Andrzej Leśniak, and Damian Gwiżdż. "Time reversal seismic source imaging using peak average power ratio (PAPR) parameter." Acta Geophysica 65, no. 2 (March 7, 2017): 299–308. http://dx.doi.org/10.1007/s11600-017-0022-0.

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Rathore, Hemant, and Arun Kumar. "Reduction of Peak Average Power Ratio for FBMC Waveform with P-PTS Technique." International Journal of Sensors, Wireless Communications and Control 10, no. 1 (February 7, 2020): 47–54. http://dx.doi.org/10.2174/2210327909666190207155619.

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Background: In this work, Peak Average Power Ratio (PAPR) reduction is achieved in Filter Bank Multi-Carrier (FBMC) by using a Pretreated Partial Transmit Sequence (P-PTS) technique. High PAPR is seen as unitary of the major problems in FBMC. Aim: The proposed work present a double stage optimization technique termed P-PTS. Methods: In the first step, several overlying signals cooperative optimization method that the phase angle sequences of current signal is intended and improved according to preceding overlapped signals. An efficient PTS scheme for PAPR reduction is put through in the second form. Results: The suggested technique is carried out by changing the value of U and V to analyze the BER and PAPR performance of the system. It is likewise noted that increasing the value of V can significantly lessen the peak power. Conclusion: Simulation results reveal that the performance of the proposed P-PTS technique is better than conventional PAPR reduction techniques with simple computations and the design complication can be traded off further compliantly with PAPR diminution.

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Sampath, K. I. Amila, Katsumi Takano, and Joji Maeda. "Peak-to-Average Power Ratio Reduction of Carrier-Suppressed Optical SSB Modulation: Performance Comparison of Three Methods." Photonics 8, no. 3 (February 26, 2021): 67. http://dx.doi.org/10.3390/photonics8030067.

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We compare the performances of three previously proposed methods to reduce the peak-to-average power ratio (PAPR) of the carrier-suppressed optical single-sideband (OSSB-SC) signal. PAPR of OSSB-SC signal becomes high due to the peaky Hilbert-transformed signal which is used for spectral suppression. Nonlinear phase shifts induced by high PAPR degrade OSSB-SC signal during fiber transmission. Previously, we proposed peak folding, peak clipping, and high-pass Hilbert transform methods to reduce the PAPR of OSSB-SC modulation. In this study, we numerically compare the effectiveness of proposed methods in a 10 Gbit/s non-return-to-zero (NRZ)-coded 100-km single-channel transmission link. Due to the reduced PAPR, peak folding and peak clipping can increase the self-phase modulation (SPM) threshold of the studied system by 2.40 dB and 2.63 dB respectively. The high-pass Hilbert transform method improves the SPM threshold by more than 9 dB.

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Kazemian, Mohsen. "Peak-to-Average Power Ratio Reduction Based on Cross- Correlation in Orthogonal Frequency Division Multiplexing Systems." Frontiers of Mechatronical Engineering 1, no. 1 (November 5, 2018): 87. http://dx.doi.org/10.18282/fme.v1i1.603.

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Three of the most important techniques of Peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems are Partial Transmit Sequence PAPR (PTS-PAPR), Selected Mapping PAPR (SLM-PAPR) and Cross-Correlation-PTS. This paper performs a complete analysis on these three techniques providing simulation and discussion of their performance on PAPR reduction and bit error rate (BER). Moreover, the comparison of these methods by using Saleh model amplifier in an OFDM system is provided. The results show that PTS-PAPR outperforms the Cross-Correlation-PTS in terms of PAPR performance while Cross-Correlation-PTS method is more efficient in BER reduction compared to PTS-PAPR and SLM-PAPR.

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Zhang, Xiu Yan, Wei Dong Wang, Lei Lei Pei, and Yu Bo Duan. "The Research of Companding Transform for Peak-to-Average Power Ratio Reduction of OFDM Signals." Applied Mechanics and Materials 128-129 (October 2011): 1484–88. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.1484.

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One of the main drawbacks of orthogonal frequency division multiplexing (OFDM) is the high peak-to-average power ratio (PAPR) of the OFDM signal. How to reduce the PAPR is the key to applying the technology of OFDM efficiently. In this paper, companding transform method is presented. The performance of the systerm BER is analysised, then PAPR is reduced by using the method through simulation. Simulation results have shown that the proposed methods are very effective and flexible to improve PAPR performance in the OFDM based on the performance of the system BER is not changed very much compare to the original system.

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Uppal, Sabhyata, Sanjay Sharma, and Hardeep Singh. "Analytical Investigation on Papr Reduction in OFDM Systems Using Golay Codes." Journal of Electrical Engineering 65, no. 5 (September 1, 2014): 289–93. http://dx.doi.org/10.2478/jee-2014-0046.

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Abstract Orthogonal frequency division multiplexing (OFDM) is a common technique in multi carrier communications. One of the major issues in developing OFDM is the high peak to average power ratio (PAPR). Golay sequences have been introduced to construct 16-QAM and 256-QAM (quadrature amplitude modulation) code for the orthogonal frequency division multiplexing (OFDM), reducing the peak-to-average power ratio. In this paper we have considered the use of coding to reduce the peakto- average power ratio (PAPR) for orthogonal frequency division multiplexing (OFDM) systems. By using QPSK Golay sequences, 16 and 256 QAM sequences with low PAPR are generated

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Kumar, Rajendra, and Vuttipol Santitewagul. "Transform Methods for the Reduction of the Peak to Average Power Ratio for the OFDM Signal." Wireless Communications and Mobile Computing 2017 (2017): 1–17. http://dx.doi.org/10.1155/2017/1421362.

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The paper presents multitransform OFDM-OP system for an effective PAPR (peak to average power ratio) reduction that has a reasonable computational requirement, does not introduce any distortion, needs relatively insignificant decrease in the bandwidth efficiency, and provides a PAPR very close to that for the single carrier modulation systems thus effectively eliminating any PAPR penalty incurred by the multicarrier OFDM system. The PAPR system consists of a bank of multiple orthonormal transforms and a minimum PAPR evaluation unit for finding the optimum transform index. The paper also presents a hybrid OFDM-OP-DSI system comprised of the multiple transforms and a novel dummy symbol insertion. The PAPR reduction performance of the presented systems is compared with those of the various other transform techniques of the literature. Various simulations on the presented systems show that these can achieve a PAPR that is very close to that of a single carrier system for QAM modulation with the order of modulation selected to be 16, 64, and 256.

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Tang, Bo, Kaiyu Qin, Changwei Chen, and Yong Cao. "A Novel Clipping-Based Method to Reduce Peak-To-Average Power Ratio of OFDM Signals." Information 11, no. 2 (February 18, 2020): 113. http://dx.doi.org/10.3390/info11020113.

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Orthogonal frequency division multiplexing (OFDM) is a widely used technology for wireless broadband communications. However, it also suffers from some drawbacks. One of the critical limitations is the problem of high peak-to-average power ratio (PAPR), which causes distortions of some nonlinear components such as power amplifiers. A number of techniques have been proposed to reduce the PAPR of OFDM signals, among which the clipping-based methods have gained a lot of attention due to the effective PAPR reduction and simplicity of implementation. This paper proposes a novel clipping-based method to reduce the PAPR of OFDM signals. Based on the recently proposed clipping noise compression (CNC) method, the proposed scheme introduces a preset normalization factor to replace the calculation of average amplitude of clipping noise in the original CNC method during compression processing. Comparative simulations were carried out, and the results exhibit that the proposed method achieves better bit-error-ratio performance with equal level of PAPR reduction compared to the original CNC method.

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Wang, Xue Mei, Chun Yang Wang, Yu Chen, Yan Xin Yu, and Hong Yan Sun. "A Method for Designing Low Peak to Average Power Cognitive Radar Waveform." Applied Mechanics and Materials 716-717 (December 2014): 1055–59. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.1055.

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In this paper, the basis function of TDCS system (Transform Domain Communication System) is used to design cognitive radar transmitter waveform. Based on the noise environment, the waveform can be adjusted adaptively. Then after clipping to reduce the PAPR (Peak to Average Power Ratio) of radar echo signal, the obtained signal is used as the next launch of the radar signal. The cognitive radar transmitter requires a nonlinear waveform to improve the efficiency of radar transmitter power amplifier, so reducing the PAPR of signal is essential. This paper presents the gray complementary sequence is applied to TDCS communication systems, and then it needs to reduce PAPR of signals by clipping. Proven, PAPR of the transmitted signal is maintained at about 3.25dB, and the signal has a low probability of intercept, high anti-interference ability and distant target detection range.

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Kulkarni, Vijaya M., and A. S. Bhalchandra. "Peak-to-average power ratio reduction in wavelet packet modulation Using Binary Phase Sequence." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 3 (June 1, 2019): 1210. http://dx.doi.org/10.11591/ijeecs.v14.i3.pp1210-1219.

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A novel method of Peak–to-Average–Power-Ratio reduction is presented in this paper using WPT for multi carrier modulationand Riemann matrix for phase sequencing in SLM. Wavelet Packet Multicarrier Modulation(WPM) is a betteralternative to the existing multicarrier transmission system,OFDM system which suffers from high PAPR.Further reduction in Peak to Average Power Ratio (PAPR)is achieved by using Wavelet Packet Modulation(WPM) with SLM technique. Classical SLM uses random phases for phase rotations which suffers from the additional load of transmitting SI(side Information) to receiver. So to overcome a novel method is proposed here which uses the principle of varying the phases of the subcarrier data block to be transmitted ,using rows of the normalised Reimann matrix as phase sequence vectors for the Selected Mapping (SLM)Technique. The generated WPM frame with minimum PAPR is selected and transmitted .The proposed system achieves a significant improvement in PAPR reduction over the OFDM-classical SLM and WPM-classical SLM.

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Abdullah, Ezmin, Azlina Idris, and Azilah Saparon. "Selective Bit Permutation Method for Peak-Average Power Ratio (PAPR) Reduction in OFDM System." Advanced Science Letters 22, no. 10 (October 1, 2016): 2832–36. http://dx.doi.org/10.1166/asl.2016.7089.

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Tören, Murat, and Cebrail Çiflikli. "Peak-to-Average-Power-Ratio (PAPR) Reduction Methods with Wavelet Transform in MIMO-OFDM." IETE Journal of Research 64, no. 3 (August 23, 2017): 415–21. http://dx.doi.org/10.1080/03772063.2017.1355753.

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Ashok M Misal, Prof N. D. Pergad,. "Progressive Image Transmission over OFDM System with Minimum Peak to Average Power Ratio (PAPR)." International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 04, no. 07 (July 20, 2015): 5874–79. http://dx.doi.org/10.15662/ijareeie.2015.0407010.

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Hasan, Syed Rizwan-ul, and Shakil Ahmed. "2 Performance Evaluation of Code Division Multiple Access (CDMA) in terms of Power Measurement and Reduction." Sir Syed Research Journal of Engineering & Technology 1, no. 1 (December 20, 2011): 4. http://dx.doi.org/10.33317/ssurj.v1i1.73.

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In this research paper the performance of the CDMA system has been analyzed with respect to PAPR (Peak to Average Power Ratio) measurement and its reduction. Simulation results verify that high peaks degrade the performance of CDMA, application of codes reduced high peaks and PAPR is a good measure for CDMA.

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Mounir, Mohamed, Mohamed B. El_Mashade, Salah Berra, Gurjot Singh Gaba, and Mehedi Masud. "A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond." Sensors 21, no. 4 (February 18, 2021): 1410. http://dx.doi.org/10.3390/s21041410.

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Several high-speed wireless systems use Orthogonal Frequency Division Multiplexing (OFDM) due to its advantages. 5G has adopted OFDM and is expected to be considered beyond 5G (B5G). Meanwhile, OFDM has a high Peak-to-Average Power Ratio (PAPR) problem. Hybridization between two PAPR reduction techniques gains the two techniques’ advantages. Hybrid precoding-companding techniques are attractive as they require small computational complexity to achieve high PAPR reduction gain. Many precoding-companding techniques were introduced to increasing the PAPR reduction gain. However, reducing Bit Error Rate (BER) and out-of-band (OOB) radiation are more significant than increasing PAPR reduction gain. This paper proposes a new precoding-companding technique to better reduce the BER and OOB radiation than previous precoding-companding techniques. Results showed that the proposed technique outperforms all previous precoding-companding techniques in BER enhancement and OOB radiation reduction. The proposed technique reduces the Error Vector Magnitude (EVM) by 15 dB compared with 10 dB for the best previous technique. Additionally, the proposed technique increases high power amplifier efficiency (HPA) by 11.4%, while the best previous technique increased HPA efficiency by 9.8%. Moreover, our proposal achieves PAPR reduction gain better than the most known powerful PAPR reduction technique with a 99% reduction in required computational complexity.

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Nandalal, V., S. Sophia, and B. Gayathri. "Peak Power Reduction through Conic Optimized Sigma Clipping and Filtering." Applied Mechanics and Materials 550 (May 2014): 220–27. http://dx.doi.org/10.4028/www.scientific.net/amm.550.220.

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High Peak to Average Power Ratio (PAPR) of OFDM reduces transmitter power efficiency and increases complexity in hardware implementation. In the paper, the high PAPR is reduced using optimized Standard Deviation based Iterative Clipping and Filtering (SD-ICF).The proposed method achieves a greater reduction in PAPR in a few iterations with reduced out-of-band distortion and bit error rate when compared over classical clipping techniques.Also, the effects of oversampling on the performance of proposed OFDM system is discussed.

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Gong, Gang Jun, Dang Ke Hao, Ye Zhang, Jun Lu, and Gang Xu. "Study of SC-FDMA Reduce PAPR Based on the Power Line Carrier Communication." Advanced Materials Research 989-994 (July 2014): 3658–62. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3658.

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In order to reduce peak to average power ratio (PAPR) higher of OFDMA problems, this paper proposes a power line communication system based on SC-FDMA model, compared this model and OFDMA system on peak to average, the same power with the throughput, the same throughput required simulation sub carrier number of needed power and power rate users; The results show that: when introduced the SC-FDMA into the power line communication, can effectively reduce the system PAPR, the terminal can obtain better emission efficiency.

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Gadiel, Godwin M., Kamwe Ibwe, and M. M. Kisaka. "Blind Algorithm Development for Peak to Average Power Ratio Reduction in OFDM Systems under Frequency Selective Channels." Tanzania Journal of Engineering and Technology 38, no. 2 (December 31, 2019): 192–30. http://dx.doi.org/10.52339/tjet.v38i2.504.

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One major drawback of orthogonal frequency division multiplexing (OFDM) system is peak to average power ratio (PAPR). This effect causes high power amplifier (HPA) to introduce intermodulation and out of band radiation as the signal goes through, thus degrades the performance of OFDM systems. This paper proposes blind algorithms which takes advantage of signal transformation technique and signal distortion technique. Simulation results show that at complementary cumulative distribution function (CCDF) level of 10-3 , the proposed algorithm achieved 3.2 dB PAPR improvement compared to discrete Fourier transform with interleaved frequency division multiple access (DFT-IFDMA) based algorithm. The bit error rate (BER) performance has degraded by 2 dB compared to the original OFDM signal with no distortion under frequency selective channel (FCS) at BER of 10-4 . These presented results, mark this algorithm as a better candidate for PAPR reduction algorithm in long term evolution (LTE) network. Under AWGN channels, the proposed algorithm performs better both in low and high signal power values. Under frequency selective channels, the existing and proposed algorithm converges after 10 dB of signal to noise power values. The low BER transmissions at low signal power values signify energy efficiency, ideal for portable wireless devices with limited battery power.

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Abdelali, Hajar. "New technique combining the Tone Reservation method with Clipping technique to reduce the Peak-to-Average Power Ratio." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 6 (December 1, 2018): 5215. http://dx.doi.org/10.11591/ijece.v8i6.pp5215-5226.

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Nonlinear distortions and impairments appear in multicarrier signal with high fluctuations when amplified by a Radio Frequency Power Amplifier (RF PA). Clipping (CL) technique offers a simple way to reduce these fluctuations in Orthogonal Frequency Division Multiplexing (OFDM) Technique, but may degrade seriously the transmission quality. This is why the new mobile standards propose other methods, like the Tone Reservation (TR) technique in the Digital Video Broadcasting-Terrestrial (DVB-T), that reduce the Peak-to-Average Power Ratio (PAPR) without reaching optimal performances. This paper deals with how we can use the TR technique, which exploits null sub-carriers for generating corrective signal, in combining to CL technique in order to improve PAPR reduction without data loss. Also, we show some comparison results on the PAPR reduction obtained with proposed scheme and other techniques. Experiments using a simulated example on a complete WiMax 802.16e transmitter have been made in order to investigate the PAPR reduction performances on presence of the non-linear Power Amplifier model based on gain compression response and phase distortion.

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Jovanović, Borisav, and Srdan Milenković. "PA Linearization by Digital Predistortion and Peak-to-Average Power Ratio Reduction in Software Defined Radios." Journal of Circuits, Systems and Computers 29, no. 09 (November 20, 2019): 2050147. http://dx.doi.org/10.1142/s0218126620501479.

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Digital predistortion (DPD), based on complex-valued memory polynomials (MP), is established as an efficient method for power amplifier (PA) linearization. The DPD facilitates compliance of the telecommunication infrastructure to strict standard specifications (transmit spectrum mask (TSM), error vector magnitude (EVM), bit error rate (BER), [Formula: see text]) by making PA more linear, while at the same time reduces the running cost of the wireless infrastructure (at both Base Transceiver Station (BTS) and User Equipment (UE) sides) by making PA more power efficient. Even when DPD is utilized, signals with high peak-to-average power ratio (PAPR) produce out-of-band PA spectrum emission due to intermodulation products affecting all above-mentioned critical standard specified parameters. The novelty proposed in this paper is as follows. PA is restricted to operate within “reasonably above” PA linear region using PAPR reduction technique. The residual nonlinearity is taken care of by DPD. The combination of DPD and PAPR PA linearization methods is implemented on software-defined radio board. The necessary steps for efficient PA linearization are presented, compensating both out-of-band and in-band signal distortions. We achieved EVM = 2.0%, ACPR [Formula: see text]50[Formula: see text]dBc, at 10[Formula: see text]W LTE modulated PA output, antenna point and PA output power of 39.5[Formula: see text]dBm.

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Ali, Md Sadek, Yu Li, Md Khalid Hossain Jewel, Oluwole John Famoriji, and Fujiang Lin. "Channel Estimation and Peak-to-Average Power Ratio Analysis of Narrowband Internet of Things Uplink Systems." Wireless Communications and Mobile Computing 2018 (July 5, 2018): 1–15. http://dx.doi.org/10.1155/2018/2570165.

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Narrowband Internet of Things (NB-IoT) is a cellular based promising low-power wide-area network (LPWN) technology standardized by the 3rd Generation Partnership Project (3GPP) in release-13 as a part of the future 5th Generation (5G) wireless communication systems. The main design target of NB-IoT was to enhance radio coverage by repeating signal over an additional period of time for the ultralow-end IoT devices that would be operated in extreme coverage environments. But the power efficiency of the low-cost NB-IoT user equipment (NB-IoT UE) in the uplink is the major concern. Coverage improvement from signal repetitions depends on the channel estimation quality at extremely bad radio conditions. The typical operating signal-to-noise ratio (SNR) for NB-IoT is expected to be much lower than the zero. In this paper, we have proposed two efficient narrowband demodulation reference signal (NDMRS)-assisted channel estimation algorithms based on the conventional least squares (LS) and minimum mean square error (MMSE) estimation methods. The theoretical analysis and the link-level performance of our proposed estimation methods are presented. Simulation results exhibit that the proposed methods provide better estimation precision compared to the traditional LS and MMSE methods at the low SNR situations. Furthermore, we have analyzed the raised-cosine (RC) and square-root-raised cosine (RRC) pulse shaping to reduce peak-to-average power ratio (PAPR) as an uplink transmit filter. The PAPR values are evaluated through extensive computer simulations for both single-tone and multi-tone transmissions. Our evaluation results vindicate that the RRC pulse shaping with lower PAPR values is feasible to design of practical NB-IoT uplink transmitter and increases power efficiency.

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WEI, Yi-De, and Yung-Fang CHEN. "Peak-to-Average Power Ratio (PAPR) Reduction by Pulse Shaping Using the K-Exponential Filter." IEICE Transactions on Communications E93-B, no. 11 (2010): 3180–83. http://dx.doi.org/10.1587/transcom.e93.b.3180.

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Khademi, S., and A. van der Veen. "Constant Modulus Algorithm for Peak-to-Average Power Ratio (PAPR) Reduction in MIMO OFDM/A." IEEE Signal Processing Letters 20, no. 5 (May 2013): 531–34. http://dx.doi.org/10.1109/lsp.2013.2254114.

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Saleh, Mohanad A., Mounir T. Hamood, and Mohammed Sh Ahmed. "Reducing peak to average power ratio (PAPR) of OFDM systems using complex BIFORE precoding transform." IOP Conference Series: Materials Science and Engineering 1058, no. 1 (February 1, 2021): 012067. http://dx.doi.org/10.1088/1757-899x/1058/1/012067.

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Jovanovic, Borisav, and Srdjan Milenkovic. "The peak windowing for PAPR reduction in software defined radio base stations." Facta universitatis - series: Electronics and Energetics 33, no. 2 (2020): 273–87. http://dx.doi.org/10.2298/fuee2002273j.

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The utilization of the techniques for Peak to Average Power Ratio (PAPR) reduction makes the wireless infrastructure conform to rigorous telecommunication standard specifications (error vector magnitude (EVM), bit error rate (BER), transmit spectrum mask (TSM)). In modern modulation schemes reduction of PAPR is important requirement for distortion free and energy-efficient operation of power amplifiers (PA). In this paper novel implementation of Peak Windowing method for PAPR reduction in Software Defined Radio (SDR) Base Stations (BS) is presented. The measurement results in terms of EVM and ACPR are given for 5 MHz, 10 MHz, 15 MHz, 20 MHz Long-Term Evolution (LTE) and Wideband Code Division Multiple Access (WCDMA) modulations. In case of 10MHz LTE signal, we achieved PAPR = 8 dB, EVM = 2.0%, ACPR -52dBc at modulated PA output, antenna point.

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Liu, Qian Hui, and Jian Wang. "The Advanced Peak Cancellation Implement Method for OFDM Signals in CMMB." Applied Mechanics and Materials 380-384 (August 2013): 3538–41. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3538.

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High peak-to-average power ratio (PAPR) is one of the main disadvantages for OFDM signals, which will always result in low power efficiency of power amplifier. The peak cancellation method is a powerful PAPR reduction technique. In this paper, the advanced peak cancellation implement method (APC) is proposed for OFDM signals. Extensive simulations demonstrate that in comparison with the conversational peak cancellation implement method, the APC is more suitable for OFDM signals due to less iteration and comparative performance.

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Goudos, Sotirios K. "A novel generalized oppositional biogeography-based optimization algorithm: application to peak to average power ratio reduction in OFDM systems." Open Mathematics 14, no. 1 (January 1, 2016): 705–22. http://dx.doi.org/10.1515/math-2016-0066.

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AbstractA major drawback of orthogonal frequency division multiplexing (OFDM) signals is the high value of peak to average power ratio (PAPR). Partial transmit sequences (PTS) is a popular PAPR reduction method with good PAPR reduction performance, but its search complexity is high. In this paper, in order to reduce PTS search complexity we propose a new technique based on biogeography-based optimization (BBO). More specifically, we present a new Generalized Oppositional Biogeography Based Optimization (GOBBO) algorithm which is enhanced with Oppositional Based Learning (OBL) techniques. We apply both the original BBO and the new Generalized Oppositional BBO (GOBBO) to the PTS problem. The GOBBO-PTS method is compared with other PTS schemes for PAPR reduction found in the literature. The simulation results show that GOBBO and BBO are in general highly efficient in producing significant PAPR reduction and reducing the PTS search complexity.

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Hamada, H. A., Usama S. Mohammed, and Moon Kyou Song. "PAPR Reduction Using Huffman Coding Combined with Selective Interleaver for OFDM Transmitter." Applied Mechanics and Materials 145 (December 2011): 489–93. http://dx.doi.org/10.4028/www.scientific.net/amm.145.489.

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Orthogonal Frequency Division Multiplexing (OFDM) technique is becoming the chosen modulation technique for wireless communications. OFDM can provide large data rates with sufficient robustness to radio channel impairments. There are two main drawbacks with OFDM, the peak to average power ratio and its sensitivity to frequency errors. The signal peak to average power ratio reduction solution play an important role to improve performance of OFDM that peak occurs after symbols fed to FFT to produce time domain signal, adding signals up coherently. In This paper we proposes technique to reduce the PAPR using Huffman coding combined with selective interleaver as distortion less scrambling technique. We utilize the amount saved in the total bit rate by the Huffman coding to send the information of the selected interleaver and encoding table for accurate decoding at the receiver without reducing the effective throughput. Performed computer simulations have shown that the proposed scheme outperform the performance of most of the recent PAPR reduction techniques in most cases. By using this method 2.63 dB PAPR reduction is achieved.

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Al Harthi, Nahla, Zhongfeng Zhang, Daejin Kim, and Seungwon Choi. "Peak-to-Average Power Ratio Reduction Method Based on Partial Transmit Sequence and Discrete Fourier Transform Spreading." Electronics 10, no. 6 (March 10, 2021): 642. http://dx.doi.org/10.3390/electronics10060642.

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Recently, filter bank multicarrier with offset quadrature amplitude modulation (FBMC/OQAM) has received increasing attention from researchers, owing to its merits and superior spectral efficiency. High peak-to-average power ratio (PAPR) occurs in approximately all multicarrier systems, including FBMC/OQAM, and may cause bit-error-rate (BER) degradation if not appropriately handled. Conventional PAPR reduction methods for orthogonal frequency division multiplexing (OFDM), such as partial transmit sequence (PTS), selective mapping (SLM), and discrete Fourier transform (DFT) spreading, are ineffective in FBMC/OQAM because of the different structure of the symbols. This study proposes a novel method combining DFT spreading and PTS methods to reduce the PAPR of FBMC/OQAM systems with reasonable computational complexity. Numerical results obtained from various computer simulations show that the proposed method achieves a noticeable enhancement in the PAPR performance of the FBMC/OQAM signal compared to other existing methods without affecting the BER performance. Further, the computational complexity analysis and BER performance of the proposed method are presented in comparison to typical existing methods. From our computer simulations, the proposed method reduces the PAPR by approximately 32.8% compared to that of the conventional methods, and the BER performance is improved by 25% with a high-power amplifier effect.

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Sangar, Manju, Professor Brijendra Mishra, and Professor Bhupendra Verma. "A REVIEW OF NOVEL APPROACH FOR REDUCTION IN SUB CARRIER PEAK TO AVERAGE POWER RATIO IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING." International Journal of Engineering Technologies and Management Research 5, no. 2 (April 30, 2020): 114–22. http://dx.doi.org/10.29121/ijetmr.v5.i2.2018.632.

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In last few decades the demand for multimedia data services has grown up fastly. One of the most promising multicarrier system, Orthogonal Frequency Division Multiplexing (OFDM) allow large number of capacity the number of subcarriers, high data rates and ubiquitous coverage with high mobility. But OFDM is extensively affected by peak to average power ratio (PAPR). Unfortunately, the high PAPR inherent to OFDM signal envelopes will frequently drive high power amplifiers (HPAs) which are operate in the nonlinear region. The nonlinearity of the High Power Amplifier exhibits phase and amplitude distortions, which causes loss of orthogonality between the subcarriers; also (ICI) is introduced in the source signal. This dissertation is basically focused on PAPR reduction in OFDM system and measuring BER in different Modulation Technique. In PAPR reduction Signal companding methods have low complication, high distortion and spectral properties; however, we have limited PAPR reduction capabilities. Partial transmit sequences (PTS) and selected mapping (SLM), have also been considered for PAPR reduction. Such kind of techniques are very efficient and distortion less, Also the SLM is very good technique to the PAPR problem in single carrier system. This method has low complexity as well as it is data independent. In this paper, we are describing a combine technique of SLM and PTS to minimize the PAPR. In PTS scheme, number of sub blocks increases; the IFFT block to be performed for sub blocks also increases. Simulation results have shown that the reductions of PAPR of proposed scheme is more than PTS and SLM methods as well as the difficulty reduced considerably.

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Shawqi, Farooq Sijal, Lukman Audah, Salama A. Mostafa, Saraswathy Shamini Gunasekaran, Abdullah Baz, Ahmed Talaat Hammoodi, Hosam Alhakami, Mustafa Hamid Hassan, Mohammed Ahmed Jubair, and Wajdi Alhakami. "A New SLM-UFMC Model for Universal Filtered Multi-Carrier to Reduce Cubic Metric and Peak to Average Power Ratio in 5G Technology." Symmetry 12, no. 6 (June 1, 2020): 909. http://dx.doi.org/10.3390/sym12060909.

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The new generation of wireless communication systems has adopted different waveforms. The universal filtered multicarrier is one of the adopted candidates that has symmetry with various numerology designs. However, the high peak to average power ratio is one of the major limitations faced by universal filter multicarrier (UFMC) designers. Moreover, recent studies utilize cubic metric along with the peak to average power ratio (PAPR) to show the power back-off effect of the signal in which the PAPR metric identifies the maximum peak and the cubic metric (CM) identifies the Out of Band emission and In-Band distortion. Most of the current solutions, such as amplitude clipping, tone reservation, and active constellation extension, decrease the PAPR but cause degradation to the bit error rate. Selected mapping is one of the promising techniques that is recently used to solve the PAPR and CM problems without causing bit error rate (BER) degradation. In this paper, the selected mapping (SLM) is integrated with UFMC to reduce the PAPR and CM without affecting the BER of 5G networks. The SLM-UFMC solution model is simulated by MATLAB and the results show that the SLM-UFMC model presents better PAPR and CM performance without BER degradation. The PAPR has been decreased to 1.5 dB with respect to eight-phase rotation vectors and the CM decreased to 1.25 dB compared to the conventional UFMC.

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Rajasekhar, K., and Prabhakara B. Rao. "Reduction of Peak-to-Average Power Ratio in Orthogonal Frequency Division Multiplexing System Using Haar Wavelet Approach." Journal of Computational and Theoretical Nanoscience 16, no. 2 (February 1, 2019): 484–88. http://dx.doi.org/10.1166/jctn.2019.7755.

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In Orthogonal Frequency Division Multiplexing (OFDM) based systems, with the increasing demand for data rate and reliability in Wireless communications and devices, several issues become very important like bandwidth efficiency, quality of service and radio coverage. However, OFDM is very sensitive to nonlinear effects due to the high peak-to-average power ratio (PAPR) owned by the transmitted signals and does not show robustness to spectral null channels. This paper proposes a novel BPSK OFDM system based on Haar wavelet transformation. The PAPR reduced by 10 log10 2 ≈ 3 dB at most, compared with the conventional OFDM system and shows robustness to spectral null channels, improving BER performance 3 dB at most. Finally, theoretical and simulated results of the Cumulative Distribution Functions (CDFs) of both Conventional and Proposed OFDM are compared to show that the Proposed OFDM has better performance than the Conventional OFDM.

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Xia, Yujie, and Jinwei Ji. "Low-Complexity Blind Selected Mapping Scheme for Peak-to-Average Power Ratio Reduction in Orthogonal Frequency-Division Multiplexing Systems." Information 9, no. 9 (August 31, 2018): 220. http://dx.doi.org/10.3390/info9090220.

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Orthogonal frequency-division multiplexing (OFDM) is an attractive multicarrier technique for the simplicity of equalization and high data throughput. However, the transmitted OFDM signal has a very high peak-to-average power ratio (PAPR), which severely degrades the performance of practical OFDM systems and reduces the efficiency of high-power amplifiers (HPA). The selected mapping (SLM) scheme is an effective PAPR reduction method of OFDM signals. However, this approach usually requires side information (SI) transmission, which increases the difficulty of the hardware implementation with high complexity and reduces the data transmission rate. In this paper, based on designing phase rotation vectors in the time domain, a novel blind SLM method with low complexity is proposed to reduce the PAPR of OFDM signals. At the transmitter, the proposed method properly designs the phase rotation vectors in the time domain, which can be considered as an equivalent wireless channel without SI transmission. At the receiver, the effect of phase rotation vectors can be removed by the conventional channel estimation method, and the data demodulation processing can be easily performed by the frequency domain equalization. Simulation results show that the proposed scheme can achieve low complexity in PAPR reduction and has great robustness in bit error rate (BER) performance compared to the other low-complexity SLM PAPR schemes.

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Vittal, M. V. R., and K. Rama Naidu. "Modified Alternative-signal Technique for Sequential Optimisation for PAPR Reduction in OFDM-OQAM Systems." Defence Science Journal 67, no. 3 (April 25, 2017): 298. http://dx.doi.org/10.14429/dsj.67.10642.

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A modified alternative signal technique for reducing peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing systems employing offset quadrature amplitude modulation (OFDM-OQAM) is proposed. Lower PAPR reduces the complexity of digital to analog converters and results in increasing the efficiency of power amplifiers. The main objective of the algorithm is to decrease PAPR with low complexity. The alternative signal method involves the individual alternative signal (AS-I) and combined alternative signal (AS-C) algorithms. Both the algorithms decrease the peak to average power ratio of OFDM-OQAM signals and AS-C algorithm performs better in decreasing PAPR. However the complexity of AS-C algorithm is very high compared to that of AS-I. To achieve reduction in PAPR with low complexity, modified alternative signal technique with sequential optimisation (MAS-S) is proposed. The quantitative PAPR analysis and complexity analysis of the proposed algorithm are carried out. It is demonstrated that MAS-S algorithm simultaneously achieves PAPR reduction and low complexity.

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Duffy, Maxwell Robert, Gregor Lasser, and Zoya Popović. "Distortion mitigation for 100 and 250 MHz discrete supply modulation of a three-stage K-band MMIC PA." International Journal of Microwave and Wireless Technologies 12, no. 8 (July 1, 2020): 707–15. http://dx.doi.org/10.1017/s1759078720000847.

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AbstractThis paper presents a high-efficiency linear GaN K-band transmitter for broadband high peak-average power ratio (PAPR) signals. A GaN MMIC 18.5–24 GHz three-stage power amplifier with over 4 W peak output power, 20 dB saturated gain, and 40% peak PAE is supply-modulated with a four-level discrete dynamic supply GaN MMIC. For 100 MHz signals with ${\rm PAPR}\gt 10\, {\rm dB}$, we demonstrate an average efficiency improvement from 14 to 20% with a simultaneous linearity improvement in noise power ratio (NPR) from 23 to 26 dB through a shaping function focused on gain linearization. For 250 MHz signal bandwidth, there is no observed degradation in NPR and the efficiency is improved by 5 percentage points. For discrete supply modulation, the switching transients between levels are experimentally investigated for wideband signals.

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Ghassemi, A., and T. A. Gulliver. "Low-Complexity Distortionless Techniques for Peak Power Reduction in OFDM Communication Systems." Journal of Computer Networks and Communications 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/929763.

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A high peak-to-average power ratio (PAPR) is one of the major drawbacks to using orthogonal frequency division multiplexing (OFDM) modulation. The three most effective distortionless techniques for PAPR reduction are partial transmit sequence (PTS), selective mapping (SLM), and tone reservation (TR). However, the high computational complexity due to the inverse discrete Fourier transform (IDFT) is a problem with these approaches. Implementation of these techniques typically employ direct computation of the IDFT, which is not the most efficient solution. In this paper, we consider the development and performance analysis of these distortionless techniques in conjunction with low-complexity IFFT algorithms to reduce the PAPR of the OFDM signal. Recently, proposed IFFT-based techniques are shown to substantially reduce the computational complexity and improve PAPR performance.

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Maddanaca, Andi. "Reduksi Peak-To-Average Power Ratio Pada Sistem STBC MIMO-OFDM dengan Metode Selected Mapping dan Partial Transmit Sequence." Jurnal Telekomunikasi dan Komputer 3, no. 1 (February 27, 2017): 85. http://dx.doi.org/10.22441/incomtech.v3i1.1115.

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Teknik OFDM merupakan teknik multicarrier yang mengefisienkan bandwidth. Penggunaan teknik OFDM dapat mengatasi multipath fading dan intersymbol interference (ISI). Namun demikian, OFDM mempunyai dua kelemahan, salah satunya adalah peak-to-average power ratio (PAPR) yang tinggi. PAPR yang tinggi akan menyebabkan distorsi nonlinear pada high power amplifier (HPA) karena HPA membatasi keluaran dengan nilai tertentu dan mengurangi efisiensi daya amplifier. Oleh karena itu, PAPR yang tinggi harus direduksi. Metode reduksi PAPR yang diajukan adalah dengan menggunakan metode Selected Mapping (SLM) dan Partial Transmit Sequence (PTS). Kedua metode ini memiliki kekurangan dalam hal kompleksitas multiplikasi dan penjumlahan dan adanya bit side information yang harus dikirimkan ke receiver. Oleh karena itu, penulis mengajukan pengembangan dari metode tersebut dengan memodifikasi faktor rotasi fasa menjadi pattern konversi terdefinisi yang lebih adaptif pada SLM, dan mengurangi iterasi pembangkitan faktor rotasi fasa pada metode PTS dengan pendefinisian faktor rotasi fasa yang terbatas. Hasil simulasi dengan 1000 simbol OFDM menunjukkan bahwa kemampuan reduksi PAPR pada metode m-SLM dan m-PTS mendekati kemampuan reduksi metode konvensional. Bit error rate (BER) yang dihasilkan juga mengalami perbaikan dibandingkan BER tanpa reduksi. m-SLM secara keseluruhan mengungguli kinerja dari m-PTS, baik pada nilai reduksi PAPR maupun pada perbaikan BER.

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Makarov, Sergey B., Mingxin Liu, Anna S. Ovsyannikova, Sergey V. Zavjalov, ILya Lavrenyuk, Wei Xue, and Yidong Xu. "A Reduction of Peak-to-Average Power Ratio Based Faster-Than-Nyquist Quadrature Signals for Satellite Communication." Symmetry 13, no. 2 (February 20, 2021): 346. http://dx.doi.org/10.3390/sym13020346.

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The increase in the throughput of digital television and radio broadcasting (DVB) channels can be achieved due to application of signals with a compact spectrum and a relatively small peak-to-average power ratio (PAPR). The reason is the usage of traveling wave tubes (TWT) for amplifying and transmitting signals from a satellite repeater in DVB-S2X systems. At the same time, given that the bandwidth allocated for transmission should be used as efficiently as possible, a high reduction rate of out-of-band emissions level is required. The most effective solution in this direction is the transition to spectrum-economic signals, such as optimal Faster-Than-Nyquist (FTN) signals, which can provide a certain reduction rate of the out-of-band emissions level and minimum acceptable PAPR. This article proposes a method for obtaining optimal FTN pulses, which have symmetry in time domain, with specified PAPR and reduction rate of out-of-band emissions for the quadrature phase shift keying (QPSK) and offset quadrature phase shift keying (OQPSK). The possibility of synthesizing signals with OQPSK modulation is presented theoretically for the first time. Optimal FTN signals can provide PAPR reduction by at most 3 dB and outperform known root raised cosine (RRC) pulses. The simulation model adopts an architecture for quadrature generation of optimal FTN signals with OQPSK modulation with blocks for adjustable pre-amplification, clipping, and power amplification. The proposed signals can be used to increase the spectral and energy efficiencies of satellite broadcasting systems, such as DVB-S2/S2X, as well as low-rate return channels of interactive broadcasting systems with a frequency resource shortage.

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Anjum, M. R., M. A. Shaheen, Farhan Manzoor, and Mussa A. Dida. "Improved Clipping Technique for PAPR Reduction in OFDM." Applied Mechanics and Materials 548-549 (April 2014): 1420–23. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.1420.

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Multicarrier modulation technique also known as Orthogonal Frequency Division Multiplexing (OFDM) is considered to be the most rapidly growing technique for 4th Generation wireless communication system. Due to its high speed data rate and its ability of multipath fading channel robustness. OFDM becomes an attractive technique and it is widely adopted in many wireless communications system. OFDM signal carries its major drawback of high Peak to Average Power Ratio (PAPR) problem. Out of band radiation and in band distortion produced due to its high PAPR. Mobile phone communication suffer severe drawback during its amplification. When OFDM employed a non linear Power Amplifier (PA), it produces the fluctuation in amplitude of OFDM signal. This paper discusses the method to overcome PAPR in terms of its performance by using improved clipping technique for PAPR reduction. This method is easy to implement and reduces the amount of PAPR by clipping the peak of the maximum power signal. We present an improved method for PARR reduction for reducing peak magnitude of OFDM signal. This scheme simultaneously minimizes the peak magnitude of PAPR in OFDM signal.

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Bhatia, Richa, and Vivek Upadhyay. "PAPR Reduction in OFDM System Using Hybrid OICF and Phase Rotation Scheme." Journal of Optical Communications 40, no. 2 (March 26, 2019): 109–12. http://dx.doi.org/10.1515/joc-2017-0034.

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Abstract Peak to average power ratio (PAPR) is one of the major limitations of orthogonal frequency division multiplexing (OFDM) systems because the higher PAPR induces the signal to get out of linear region of high power amplifier (HPA). In this article, a hybrid PAPR reduction scheme based on the combination of optimized iterative clipping and filtering (OICF) method and phase rotation is proposed. Using phase rotation, signal’s initial PAPR has been reduced by 14.23 dB and then OICF further reduces the final PAPR by 1.37 dB. Decreased PAPR will play an important role in reducing systems power consumption.

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Mroué, Mohamad, Amor Nafkha, Jacques Palicot, Benjamin Gavalda, and Nelly Dagorne. "Performance and Implementation Evaluation of TR PAPR Reduction Methods for DVB-T2." International Journal of Digital Multimedia Broadcasting 2010 (2010): 1–10. http://dx.doi.org/10.1155/2010/797393.

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High Peak to Average Power Ratio (PAPR) is a critical issue in multicarrier communication systems using Orthogonal Frequency Division Multiplexing (OFDM), as in the Second Generation Terrestrial Digital Video Broadcasting (DVB-T2) system. This problem can result in large performance degradation due to the nonlinearity of the High Power Amplifier (HPA) or in its low power efficiency. In this paper, we evaluate the performance of different Tone Reservation-based techniques for PAPR reduction in DVB-T2 context. Also, we propose an iterative TR-based technique called “One Kernel One Peak” (OKOP). Simulation results and performance comparison of these techniques in terms of gain in PAPR reduction, mean power variation, and complexity will be given. Finally, we describe the implementation of a PAPR reduction algorithm in the DVB-T2 modulator.

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., Amrutha p. "PARTIAL TRANSMIT SEQUENCE (PTS) TECHNIQUE TO REDUCE THE PEAK TO AVERAGE POWER RATIO (PAPR) IN OFDM SYSTEM." International Journal of Research in Engineering and Technology 05, no. 16 (May 25, 2016): 227–30. http://dx.doi.org/10.15623/ijret.2016.0516048.

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Journal articles on the topic 'PAPR (Peak to Average Power Ratio)'

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