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Готові списки джерел за темами / Noncoherent modulator

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Добірка наукової літератури з теми "Noncoherent modulator"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Noncoherent modulator"

1

Yang, Guoliang, Junhong Su, Yuan Li, Jialin Cai, and Yiren Li. "A Study of Resolution Improvement in Noncoherent Optical Coherence Imaging." Advances in Mathematical Physics 2022 (July 5, 2022): 1–12. http://dx.doi.org/10.1155/2022/3232323.

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Noncoherent light, as a common light source in life, can effectively avoid problems such as scattering noise caused by optical components incoherent light imaging, and through the design of the optical path can also trigger interference and holographic imaging of objects, allowing holography to be used in more fields. Various techniques have emerged for recording holograms using incoherent light sources as technology has developed. A recording method has been proposed that exploits the correlation between the object wave information and the Fresnel band sheet to achieve incoherent hologram rec

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2

Xin, Lei, Xiao Xu, Liuge Du, and Jia Zhao. "FSK/ASK Orthogonal Modulation System Based on Novel Noncoherent Detection and Electronic Dispersion Compensation for Short-Reach Optical Communications." Photonics 11, no. 1 (2023): 44. http://dx.doi.org/10.3390/photonics11010044.

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We propose an FSK/ASK orthogonal modulation system based on a novel noncoherent detection (NCD) scheme, aimed at expanding the system capacity for short-reach optical communications cost-effectively. In the transmitter, the FSK optical signal is generated by simple frequency modulation through a directly modulated distributed feedback laser. Subsequently, by utilizing a Mach–Zehnder modulator for ASK modulation, the FSK/ASK optical signal is obtained. The novel and low-complexity NCD receiver consists of an intensity detection branch and a frequency detection branch. The frequency detection br

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3

Brusin, E. "Frequency Modulated Signal’s Optimum Noncoherent Demodulator Performance." Proceedings of Telecommunication Universities 8, no. 1 (2022): 27–33. http://dx.doi.org/10.31854/1813-324x-2022-8-1-27-33.

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The article considers optimum noncoherent demodulator scheme. The symbol synchronization is key problem of demodulator’s performance. It is offered the resampler symbol synchronization sсhem. Modeling demodulator algorithm results is shown. The modeling results let to propose the optimum noncoherent demodulator scheme. It is shown that the demodulator provided near to ideal noncoherent performance. Based on the results presented in the paper, receivers of various broadband signals can be constructed.

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4

Raphaeli, D. "Noncoherent coded modulation." IEEE Transactions on Communications 44, no. 2 (1996): 172–83. http://dx.doi.org/10.1109/26.486610.

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5

Gamal, Heba, Nour Eldin Ismail, M. R. M. Rizk, Mohamed E. Khedr, and Moustafa H. Aly. "A Coherent Performance for Noncoherent Wireless Systems Using AdaBoost Technique." Applied Sciences 9, no. 2 (2019): 256. http://dx.doi.org/10.3390/app9020256.

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Boosting is a machine learning approach built upon the idea of producing a highly precise prediction rule by combining many relatively weak and imprecise rules. The Adaptive Boosting (AdaBoost) algorithm was the first practical boosting algorithm. It remains one of the most broadly used and studied, with applications in many fields. In this paper, the AdaBoost algorithm is utilized to improve the bit error rate (BER) of different modulation techniques. By feeding the noisy received signal into the AdaBoost algorithm, it is able to recover the transmitted data from the noisy signal. Consequentl

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6

Shi, Xianhua, Yimao Sun, Jie Tian, et al. "BER Performance Analysis of Non-Coherent Q-Ary Pulse Position Modulation Receivers on AWGN Channel." Sensors 21, no. 18 (2021): 6102. http://dx.doi.org/10.3390/s21186102.

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This paper introduces the structure of a Q-ary pulse position modulation (PPM) signal and presents a noncoherent suboptimal receiver and a noncoherent optimal receiver. Aiming at addressing the lack of an accurate theoretical formula of the bit error rate (BER) of a Q-ary PPM receiver in the additive white Gaussian noise (AWGN) channel in the existing literature, the theoretical formulas of the BER of a noncoherent suboptimal receiver and noncoherent optimal receiver are derived, respectively. The simulation results verify the correctness of the theoretical formulas. The theoretical formulas c

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7

Yao, Yan, Yanbo Wu, Min Zhu, Dong Li, and Jun Tao. "Efficient On-Off Keying Underwater Acoustic Communication for Seafloor Observation Networks." Applied Sciences 10, no. 6 (2020): 1986. http://dx.doi.org/10.3390/app10061986.

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In the cableless seafloor observation networks (SONs), the links among network nodes rely on underwater acoustic communication (UAC). Due to the energy constraint and the high-reliability requirement of the cableless SONs, the noncoherent UAC has been a preferred choice, even though a noncoherent UAC scheme generally suffers from low spectral efficiency. In this paper, we propose a high-spectral-efficiency noncoherent UAC transmission scheme which is implemented as an orthogonal frequency-division multiplexing (OFDM) system adopting the on-off keying (OOK) modulation. To simultaneously achieve

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8

Jarboui, S., and S. Hadda. "Noncoherent coded modulation for 32QAM." IEE Proceedings - Communications 152, no. 6 (2005): 975. http://dx.doi.org/10.1049/ip-com:20050001.

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9

Yang, Liuqing, Georgios B. Giannakis, and Ananthram Swami. "Noncoherent Ultra-Wideband (De)Modulation." IEEE Transactions on Communications 55, no. 4 (2007): 810–19. http://dx.doi.org/10.1109/tcomm.2007.894116.

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10

Crouse, D. F., C. R. Berger, Shengli Zhou, and P. Willett. "Optimal Memoryless Relays With Noncoherent Modulation." IEEE Transactions on Signal Processing 56, no. 12 (2008): 5962–75. http://dx.doi.org/10.1109/tsp.2008.2006154.

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Дисертації з теми "Noncoherent modulator"

1

Забегалов, І. В., С. Жук, Андрій Васильович Булашенко, Андрей Васильевич Булашенко та Andrii Vasylovych Bulashenko. "Моделювання некогерентного модулятора двусмугової амплітудної модуляції з передачею носійної". Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/21057.

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2

Seet, Siong Leng Henry. "Analysis of noncoherent orthogonal modulation for mobile computing." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/55206.

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Approved for public release; distribution is unlimited.<br>Wireless communication is employed to connect mobile computers in a networked environment for information exchange. In a tactical space, sensors and computers typically need to operate on-the-move while transmitting data over both short and long distances in different terrain and conditions. The wireless communication is thus susceptible to effects of Doppler shift and channel fading. In addition, when security and anti jamming features are required, such as frequency-hopping techniques, then coherent signal detection is difficult

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3

Raorane, Pooja Prakash. "Sampling Based Turbo and Turbo Concatenated Coded Noncoherent Modulation Schemes." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1279071861.

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4

Xingwen, Ding, Zhong Yumin, Chang Hongyu, and Chen Ming. "Noncoherent Demodulation with Viterbi Decoding for Partial Response Continuous Phase Modulation." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579651.

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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV<br>With the characteristics of constant envelope and continuous phase, Continuous Phase Modulation (CPM) signal has higher spectrum efficiency and power efficiency than other modulation forms. A noncoherent demodulation with Viterbi decoding for partial response CPM signals is proposed. Simulation results indicate that the demodulation performance of proper partial response CPM is better than the tra

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5

Lin, Xu. "Trellis-coded permutation modulation for improved performance of narrowband noncoherent FSK." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11072008-063438/.

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6

Vincent, Patrick J. "Effects of fading and data modulation on noncoherent m-sequence acquisition schemes." Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/25877.

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Анотація:

Approved for public release; distribution is unlimited.<br>In direct-sequence spread-spectrum systems, successful communications require phase synchronization of the m-sequence in the incoming signal with a locally generated m-sequence at the receiver. Many acquisition schemes which extract the phase of an incoming m-sequence have been studied, but most of them assume coherent demodulation (which is usually not available during acquisition) and or independent samples (which introduce a loss in the effective signal to noise ratio (SNR)). This thesis investigates the performance of two m-sequenc

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7

Zeidler, Brandon J. "Noncoherent detection of pulse-position modulation with correlated Gaussian interference in a slowly fading two-path channel." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3196544.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed February, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 248-250).

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8

Culha, Onur. "Noncoherent Differential Demodulation Of Cpm Signals With Joint Frequency Offset And Symbol Timing Estimation." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613729/index.pdf.

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In this thesis, noncoherent differential demodulation of CPM signals with joint carrier frequency offset and symbol timing estimation is investigated. CPM is very attractive for wireless communications owing to major properties: good spectral efficiency and a constant envelope property. In order to demodulate the received CPM signal differentially, the symbol timing and the carrier frequency offset have to be estimated accurately. There are numerous methods developed for the purpose. However, we have not encountered studies (which are based on autocorrelation estimation and hence suitable for

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9

Zhao, Qing. "Advanced Synchronization Techniques for Continuous Phase Modulation." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10486.

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Анотація:

The objective of this research work is to develop reliable and power-efficient synchronization algorithms for continuous phase modulation (CPM). CPM is a bandwidth and power efficient signaling scheme suitable for wireless and mobile communications. Binary CPM schemes have been widely used in many commercial and military systems. CPM with multilevel symbol inputs, i.e., M-ary CPM, can achieve a higher data rate than binary CPM. However, the use of M-ary CPM has been limited due to receiver complexity and synchronization problems. In the last decade, serially concatenated CPM (SCCPM) has drawn

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10

Raphaeli, Dan. "Noncoherent Coded Modulation." Thesis, 1994. https://thesis.library.caltech.edu/4944/1/Raphaeli_d_1994.pdf.

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<p>In this thesis, we are concerned with the transmission of data over noncoherent channels (the carrier phase is random). We consider a receiving system which does not attempt to estimate the carrier phase from the received data. Instead, the transmitter and receiver will be designed so that the data transmission is robust with respect to the unknown phase variations of the channel. For the transmitter, we propose new combined coding and modulation, specifically designed to match the noncoherent channel. For the receiver, efficient decoders to noncoherently decode the coded modulation are dev

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Книги з теми "Noncoherent modulator"

1

Pandey, Raju. Noncoherent detection of continuous phase modulation. National Library of Canada, 1990.

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2

Vincent, Patrick J. Effects of fading and data modulation on noncoherent m-sequence acquisition schemes. Naval Postgraduate School, 1992.

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Частини книг з теми "Noncoherent modulator"

1

Boudreau, Daniel. "A unified view of noncoherent detection and differential detection of phase modulated signals." In Information Theory and Applications. Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/3-540-57936-2_35.

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Тези доповідей конференцій з теми "Noncoherent modulator"

1

Yu, Francis T. S., S. Jutamulia, and T. W. Lin. "White-light signal processing based on liquid crystal television." In OSA Annual Meeting. Optica Publishing Group, 1986. http://dx.doi.org/10.1364/oam.1986.tun1.

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Many applications of the liquid crystal television (LCTV) have been reported in literature. By replacing the low-quality polarizers in the LCTV and immersing the LCTV in a liquid gate, a low-cost LCTV can be applied as a spatial light modulator in a real-time optical processor. Applications of the LCTV to white-light signal processing, such as edge enhancement and spatial color encoding, were performed. Real-time pseudocolor encoding based on the birefringent effect of the liquid crystal was also investigated. A pseudocolor encoded image of an x-ray transparency was obtained using the black-an

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2

Thylen, Lars. "Optical Switch Arrays in LiNbO3, Status Review and Prospects." In Integrated and Guided Wave Optics. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/igwo.1989.maa1.

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Integrated optics devices in LiNbO3 have reached a significant maturity in recent years, reflected in the emerging commercial availability of devices such as modulators and switches. The applications for these devices range from high speed modulation in coherent and noncoherent systems, receiver chips in coherent systems, sensors and instrumentation to photonic switching and signal processing. Switches, in particular, are important components, due to the basic character of the switching function in time and space. This paper treats reported switch arrays, as well as some demonstrated applicati

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3

Ulovec, Karel. "Noncoherent recognition of OFDM modulation." In 2008 18th International Conference Radioelektronika. IEEE, 2008. http://dx.doi.org/10.1109/radioelek.2008.4542703.

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4

Ruey-Yi Wei. "Noncoherent space-time block coded modulation." In 2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577). IEEE, 2004. http://dx.doi.org/10.1109/icc.2004.1312636.

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5

Crouse, David F., Christian R. Berger, Shengli Zhou, and Peter Willett. "Optimal memoryless relays with noncoherent modulation." In 42nd Annual Conference on Information Sciences and Systems (CISS 2008). IEEE, 2008. http://dx.doi.org/10.1109/ciss.2008.4558513.

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6

Apalina, Polina V., and Alexander B. Sergienko. "Two-Level Index Modulation for Noncoherent Reception." In 2023 XVIII International Symposium Problems of Redundancy in Information and Control Systems (REDUNDANCY). IEEE, 2023. http://dx.doi.org/10.1109/redundancy59964.2023.10330168.

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7

Sergienko, Alexander B., and Polina V. Apalina. "Combining Index Modulation with Codebooks for Noncoherent Reception." In 2023 25th International Conference on Digital Signal Processing and its Applications (DSPA). IEEE, 2023. http://dx.doi.org/10.1109/dspa57594.2023.10113452.

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8

Zhou, Guangpeng, Lin Zheng, and Chao Yang. "Spatial Multiplexing Modulation in Noncoherent MIMO-FCrSK System." In 2020 International Conference on Wireless Communications and Signal Processing (WCSP). IEEE, 2020. http://dx.doi.org/10.1109/wcsp49889.2020.9299687.

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9

Karout, J., E. Agrell, K. Szczerba, and M. Karlsson. "Designing Power-Efficient Modulation Formats for Noncoherent Optical Systems." In 2011 IEEE Global Communications Conference (GLOBECOM 2011). IEEE, 2011. http://dx.doi.org/10.1109/glocom.2011.6133546.

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10

Valenti, Matthew C., Don Torrieri, and Terry Ferrett. "Noncoherent physical-layer network coding using binary CPFSK modulation." In MILCOM 2009 - 2009 IEEE Military Communications Conference. IEEE, 2009. http://dx.doi.org/10.1109/milcom.2009.5380101.

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