Relevant bibliographies by topics / Continuous phase modulation

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Continuous phase modulation'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "Continuous phase modulation"

1

Sundberg, C. E. "Continuous phase modulation." IEEE Communications Magazine 24, no. 4 (1986): 25–38. http://dx.doi.org/10.1109/mcom.1986.1093063.

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Fonseka, J. P., and Rongqiang Mao. "Nonlinear continuous phase modulation." IEEE Transactions on Communications 42, no. 9 (1994): 2661–63. http://dx.doi.org/10.1109/26.317402.

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Fonseka, J. P., and Rongqiang Mao. "Generalized nonlinear continuous phase modulation." IEEE Transactions on Communications 43, no. 5 (1995): 1868–71. http://dx.doi.org/10.1109/26.387420.

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Ming Xiao and T. Aulin. "Irregular repeat continuous phase modulation." IEEE Communications Letters 9, no. 8 (2005): 723–25. http://dx.doi.org/10.1109/lcomm.2005.1496595.

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Asano, D. K., H. Leib, and S. Pasupathy. "Phase smoothing functions for continuous phase modulation." IEEE Transactions on Communications 42, no. 2/3/4 (1994): 1040–49. http://dx.doi.org/10.1109/tcomm.1994.580212.

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D’Andrea, A. N., U. Mengali, and G. M. Vitetta. "Multiple Phase Synchronization in Continuous Phase Modulation." Digital Signal Processing 3, no. 3 (1993): 188–98. http://dx.doi.org/10.1006/dspr.1993.1024.

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Yuan, Yabo, Peng Zhao, Bo Wang, and Bin Wu. "Hybrid Maximum Likelihood Modulation Classification for Continuous Phase Modulations." IEEE Communications Letters 20, no. 3 (2016): 450–53. http://dx.doi.org/10.1109/lcomm.2016.2517007.

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Fonseka, J. P., and Rongqiang Mao. "Multi-h phase codes for continuous phase modulation." Electronics Letters 28, no. 16 (1992): 1495. http://dx.doi.org/10.1049/el:19920950.

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Fonseka, J. P. "Block encoding with continuous phase modulation." IEEE Transactions on Communications 42, no. 12 (1994): 3069–72. http://dx.doi.org/10.1109/26.339823.

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Sedaghat, Mohammad Ali, Ralf R. Muller, and Christoph Rachinger. "(Continuous) Phase Modulation on the Hypersphere." IEEE Transactions on Wireless Communications 15, no. 8 (2016): 5763–74. http://dx.doi.org/10.1109/twc.2016.2569091.

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Dissertations / Theses on the topic "Continuous phase modulation"

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Silvester, Anna-Marie. "Space-time continuous phase modulation." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/14721.

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The combination of Space-Time (ST) coding and Continuous-Phase Modulation (CPM) produces a low power, energy efficient communication scheme suitable for wireless transmission. Space-time coding increases the reliability of transmission, and continuous-phase modulation (CPM) has the potential to provide considerable energy savings. CPM is a modulation technique that involves the transmission of a signal with continuous-phase and a constant envelope, where the continuous-phase property produces a very bandwidth efficient signal, and the constant-envelope property enables non linear (and thus energy efficient) signal amplification. The ST-CPM code is of special interest for wireless sensors because in the wireless sensor network environment energy consumption is highly constrained. The combination of ST codes and CPM is non-trivial and thus ST-CPM codes based upon block-based orthogonal and diagonal signal matrices are presented. These codes are forms the basis of a distributed ST-CPM code. The distributed ST codes are designed to operate in wireless networks containing a large set of nodes, of which only a small a priori unknown subset will be active at any time. The devised distributed ST-CPM scheme combines the ST-CPM code with a diagonal signaling matrix, (commonly assigned to all relay nodes) with signature vectors(uniquely assigned to nodes). The energy consumption of the proposed distributed ST-CPM scheme is compared with that of a distributed ST linear modulation (LM) scheme. The distributed ST-CPM scheme is shown to outperform the distributed ST-LM scheme for all but short-range transmission. Finally, a serially concatenated code for ST-CPM is proposed. The concatenated code consists of the diagonal signalling matrix as the inner code, and a class of double parity check (DPC) codes as the outer code. The resulting concatenated codes that are formed from the ST-CPM code and a DPC code are shown to provide performance close to capacity, and to provide performance superior to that provided by the more common combination of CPM, or ST-CPM schemes with convolutional codes.
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Harrold, William. "Detection of continuous phase modulation." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235856.

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The use of coded modulations such as continuous phase modulation (CPM) can improve the power and bandwidth efficiency of digital communication links. The price paid for these gains is in increased receiver complexity. The power efficiency attainable with the highly redundant signal sets employed by coded modulations becomes limited by the ability of the receiver to achieve accurate carrier phase synchronisation. Power efficiency is assessed in terms of the bit error rate performance in white Gaussian noise. A new CPM detector called the partially coherent Viterbi algorithm (PCVA) is introduced which tries to preserve the power efficiency in the presence of mild phase perturbations. The detector employs the Viterbi algorithm with a new partially coherent decision metric. Carrier phase estimates are derived dynamically from the detector's own survivor paths. In the presence of phase jitter, the PCVA is superior to a Viterbi decision directed phase locked loop. The PCVA could be applied to the detection of modulation schemes other than CPM. An error analysis of the PCVA in the absence of phase jitter provides a new and more realistic way of assessing the relative merits of various CPM schemes. Unmerged error events have been found to occur when CPM is detected with carrier phase uncertainty. The carrier phase estimator pulls in the residual phase error in such cases. A reduced state Viterbi algorithm has been examined when using the partially coherent decision metric. Receiver complexity reduction is still possible even when the detector is not coherent. A method of acquiring the carrier frequency accurately from the received CPM signal is described. The other main research goal has been the development of a new low signal-to-noise ratio (SNR) error probability analysis for coherently detected CPM. CPM is designed for use on power limited channels, but the existing error probability analysis is only accurate at high SNR. The problem at low SNR is that several error events become significant, not just the one at minimum squared Euclidean distance. The new analysis considers many events and makes statistical allowance for their pairwise interaction. The probability of events intersecting and reclosing each other has not been analysed before. This work applies to maximum likelihood sequence detection on a memoryless channel in general. A new survey of CPM error performance is made and proves the existing minimum distance results to be often optimistic especially at low and intermediate signal-to-noise ratios. The new approximation is closer to the simulated error rates where these are available. The coherent error analysis involves some computation but it is still approximately three orders of magnitude faster than simulation.
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Kleyn, Werner Frederick. "Decoding algorithms for continuous phase modulation." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/6984.

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Includes bibliographical references.<br>Continuous Phase Modulation (CPM) possesses characteristics that make it very attractive for many applications. Efficient non-linear power amplifiers can be used in the transmitters of constant envelope CPM schemes. CPM also allows for the use of simple limiters in the demodulator rather than linear receivers with gain control. These characteristics not only increases the life of the power source, but it improves circuit reliability since less heat is generated. In some applications, such as satellite transmitters, where power and circuit failure is very expensive, CPM is the most attractive choice. Bandwidth efficiency, also, is very attractive, and improves as the order of the scheme increases (together with reduction in modulation index). Still further improvement is obtained through pulse shaping which normally result in partial response schemes as opposed to full-response (CPFSK) schemes. The inherent memory or coding gain of CPM increases the minimum distance, which is a figure of merit for a scheme's error performance. The length of the inherent memory is the constraint length of the scheme. Successful extraction of this inherent memory result in improved power efficiency. By periodic variation of the modulation index as in multi-h CPFSK, a sub class of CPM, coding gain or inherent memory can be significantly improved. CPM demodulation is also less sensitive to fading channels than some other comparable systems. Well-known schemes such as GSM digital mobile systems, DECT and Iridium all use some form of CPM to transport their information. These implementations are normally pulse-shaped FSK or MSK and are used for the reasons above, except that their receivers do not always exploit the inherent memory. Unfortunately, though, when one wants to exploit the inherent memory of higher level CPM schemes, all these attractive characteristics are offset by the complexity of the receiver structures which increases exponentially in complexity as the order or constraint length is increased. Optimum receivers for binary CPFSK were first described by Osborne and Luntz [19] in 1974 and their research was later extended by Schonhoff [26] to include M-ary CPFSK. These receivers evaluate likelihood functions after observing the received signal for a certain number of symbol intervals, say N, then calculate a set of likelihood parameters on which a likelihood ratio test regarding the first symbol is based. These receivers are complex and impractical but does provide valuable insight. This is called maximum likelihood sequence estimation (MLSE). Another way to do MLSE would be to correlate all possible transmitted sequences (reference signals at the demodulator) over a period of N symbol intervals with the received sequence. The first symbol of the reference sequence with which the received sequence has the largest correlation, is decoded as the most likely symbol. The number of reference sequences required at the receiver grow very fast as the observation period increases. Up to now, only the lowest order CPM schemes have feasible optimal receiver structures. The only practical solution thus far for the MLSE of higher order schemes is the use of software implementations of which the Viterbi algorithm is the most popular. Through recursive or sequential processing of data per interval, the number of matched filters required can be reduced. However, for schemes beyond a certain order and constraint length, the Viterbi algorithm's consumption of computational resources reduces its feasibility. Research into CPM is focused mainly on the quest for simpler demodulators and decoders or lower order schemes with better coding gain. In order to gain further insight into CPM, research is approached from different angles.
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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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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 more attention since this turbo-like coded scheme can achieve near Shannon-limit performance by performing iterative demodulation/decoding. Note that SCCPM typically operates at a low signal-to-noise ratio, which makes reliable and power-efficient synchronization more challenging. In this thesis, we propose a novel timing and phase recovery technique for CPM. Compared to existing maximum-likelihood estimators, the proposed data-aided synchronizer can achieve a better acquisition performance when a preamble is short or channel model errors are present. We also propose a novel adaptive soft-input soft-output (A-SISO) module for iterative detection with parameter uncertainty. In contrast to the existing A-SISO algorithms using linear prediction, the parameter estimation in the proposed structure is performed in a more general least-squares sense. Based on this scheme, a family of fixed-interval A-SISO algorithms are utilized to implement blind iterative phase synchronization for SCCPM. Moreover, the convergence characteristics of iterative phase synchronization and detection are analyzed by means of density evolution. Particularly, an oscillatory convergence behavior is observed when cycle slips occur during phase tracking. In order to reduce performance degradation due to this convergence fluctuation, design issues, including delay depth of the proposed algorithms, iteration-stopping criteria and interleaver size, are also discussed. Finally, for completeness of the study on phase synchronization, we investigate the error probability performance of noncoherently detected full-response CPM, which does not require channel (or phase) estimation.
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Szeto, Victor F. "Iterative decoding of coded continuous phase modulation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ40953.pdf.

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Saleem, Sajid. "Frequency-domain equalization for continuous phase modulation." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50391.

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Continuous phase modulation~(CPM) is a non-linear, constant-envelope modulation scheme with memory, known for its bandwidth and power efficiency. Multi-h CPM uses multiple modulation indices in successive symbol intervals to improve the error performance as compared to single-h CPM~(basic CPM that utilizes only a single modulation index). One of the major applications of multi-h CPM is in aeronautical telemetry systems. Modern aeronautical devices host an increasing number of sensors, which can transmit flight testing data to the ground station. However, this excess data transfer increases the intersymbol interference, and thus channel equalization is required at the receiver. The objective of our research is to propose low-complexity frqeuency-domain equalization~(FDE) techniques for multi-h CPM waveforms. For a modulation scheme with memory, such as CPM, the cyclic constraint on the FDE block necessitates the use of an extra segment of symbols, called intrafix or tail segment. We have used very simple geometric arguments to derive upper and lower bounds on the length of the intrafix in terms of the parameters of the modulation scheme and the Frobenius number. It is concluded that the length of the intrafix for multi-h CPM schemes is typically shorter than those required for single-h modulation schemes. We propose two receiver architectures; one uses a matched filter front end, while the other utilizes a fractional sampling front end. Various simplifications are proposed for each architecture, and the trade-off between receiver complexity and performance is analyzed and verified through detailed simulation studies.
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Damodaran, Kanagaraj. "Turbo Product Code with Continuous Phase Modulation." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606222.

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ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, California<br>A basic problem statement in aeronautical telemetry has been to develop communication systems with good detection efficiency coupled with good spectral efficiency. Shaped-offset quadrature phase shift keying (SOQPSK) is a spectrally more efficient form of continuous phase modulation (CPM) as opposed to pulse code modulation/frequency modulation (PCM/FM). With these modulation techniques, we propose concatenated turbo product code (TPC) with CPM as a solution to our above problem statement. The performance of this turbo product coded CPM (TPC-CPM) system is simulated under coherent and non-coherent demodulation. Finally we present simulation results showing impressive coding gain performance of TPC-CPM over the AWGN channel.
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Perrins, Erik Samuel. "Reduced Complexity Detection Methods for Continuous Phase Modulation." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd969.pdf.

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Aboujaoude, Andrea E. "Nanopatterned Phase-Change Materials for High-Speed, Continuous Phase Modulation." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1538243834791942.

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Maw, Rachel Leigh. "Space-time Coded Systems with Continuous Phase Modulation." Thesis, University of Canterbury. Electrical and Computer Engineering, 2007. http://hdl.handle.net/10092/1185.

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Space-time coded systems developed in the last ten years have been designed primarily using linear modulation. Non-linear continuous phase modulation has desirable constant envelope properties and considerable potential in space-time coded systems. The work in this thesis is focussed on developing and analysing an integrated space-time coded continuous phase modulated (STC-CPM) system. The coding of the space-time encoder and the modulation is incorporated into a single trellis encoder. This allows state combining, which leads to complexity reduction due to the reduced number of states. Design criteria for STC-CPM are summarized and the Euclidean distance is shown to be important for code design. The integrated STC-CPM system design enables systematic spacetime code searches that find optimal space-time codes, to be easily implemented. Optimal rate-1/2 and rate-2/3 space-time codes are found by maximizing the system's minimum squared Euclidean distance. These codes can provide high throughput and good coding gains over un-optimized full rank codes, such as delay diversity, in a quasi-static flat fading environment. Performance bounds are developed using a union bound argument and the pairwise error probability. Approximations of the bounds are evaluated. These truncated upper bounds predict the slopes of the simulated performance curves at low error rates.
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Books on the topic "Continuous phase modulation"

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Asano, David Ken. Phase smoothing functions for continuous phase modulation. National Library of Canada, 1990.

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

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Szeto, Fatt Victor. Iterative decoding of coded continuous phase modulation. National Library of Canada, 1998.

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Nesenbergs, M. Power spectral densities for selected digital phase-continuous MFSK emissions. U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1989.

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L, Smith D., Jones L. Thomas, and United States. National Telecommunications and Information Administration., eds. Power spectral densities for selected digital phase-continuous MFSK emissions. U.S. Dept. of Commerce, National Telecommunications and Information Administration, 1989.

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Trellis coding with continuous phase modulation (CPM) for satellite-based, land-mobile communications: Final report. Technology Group, 1989.

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Book chapters on the topic "Continuous phase modulation"

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Zhang, Jian, Zuyao Ni, Sheng Wu, and Linling Kuang. "Low-Complexity Equalization of Continuous Phase Modulation Using Message Passing." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-72823-0_46.

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Yan, Yi. "An Improved Double Iterate Equalize Algorithm for Continuous Phase Modulation." In Lecture Notes in Electrical Engineering. Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4981-2_168.

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"Coding Techniques Using Continuous Phase Modulation." In Contemporary Coding Techniques and Applications for Mobile Communications. Auerbach Publications, 2009. http://dx.doi.org/10.1201/9781420054620.ch11.

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Hasegawa, Akira, and Yuji Kodama. "Modulation Instability." In Solitons in Optical Communications. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198565079.003.0015.

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Abstract A continuous wave with a cubic nonlinearity in an anomalous dispersion regime is known to develop instability with respect to small modulations in amplitude or in phase, called modulational instability. The phenomenon of modulational instability was discovered in fluids (Ostrovskii 1963, 1966; Whitham 1965; Benjamin and Feir 1967), in nonlinear optics (Bespalov and Talanov 1966; Karpman 1967), and in plasmas (Taniuti and Washimi 1968; Tam 1969; Hasegawa 1970, 1971). Modulational instability of a light wave in a fibre was suggested by Hasegawa and Brinkman (1980) as a means to generate a far infrared light source. Akhmediev et al. (1986, 1987) studied the modulational instability by constructing exact periodic solutions of the NLS equation. The first experimental verification of the modulational instability of a light wave in a fibre was made by Tai et al. (1986a). The modulational instability can also be induced by a mixture of a small amplitude light waves with the frequency separation (with respect to the carrier cw wave) falling into the sideband frequency range of instability (Hasegawa 1984). This induced modulational instability can be used to generate an ultra short pulse train with a desired repetition rate. The first experimental evidence of an induced modulational instability was also produced by Tai et al. (1986b). Modulational instability can also be produced by cross phase modulation (Berkhoer and Zakharov 1970; Agrawal 1987). This chapter is devoted to presenting theoretical and experimental analyses of modulational instabilities in fibres.
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Berber, Stevan. "Digital Bandpass Modulation Methods." In Discrete Communication Systems. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198860792.003.0006.

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This chapter presents mathematical models of baseband and bandpass digital communication systems based on binary and quaternary phase-shift keying, frequency-shift keying, and quadrature amplitude modulation. The systems are deduced as special cases from the general generic system structure and the related theory of orthonormal basis functions. The systems are uniquely presented using mathematical operators and detailed derivatives for signals in time and frequency domains at the system’s vital points, that is, the transmitter, the receiver, and the noise generator, using the concepts of both stochastic (continuous and discrete) and deterministic (continuous and discrete) signal processing. The vital characteristics of the system and its blocks are expressed in terms of amplitude spectral density, autocorrelation functions, power and energy spectral densities, and bit error probability.
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Qian, Jinwang, Junling Sun, Pengge Ma, Xinlu Gao, and Shanguo Huang. "Complex-Coefficient Microwave Photonic Filter Based on Orthogonally Polarized Optical Single-Sideband Modulation." In Proceedings of CECNet 2021. IOS Press, 2021. http://dx.doi.org/10.3233/faia210448.

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A complex-coefficient microwave photonic filter with continuous tunability is proposed and experimentally demonstrated. The filter taps are based on a 360° tunable microwave photonic phase shifter, which is realized by orthogonally polarized optical single-sideband (OSSB) modulation. The experimental results are shown and regarded as good performance for the proposed filter. The phase shift for the two taps covers a full 360° range from 8 GHz to 26 GHz. Frequency responses with different center frequency are measured within 20–21 GHz with the full free spectral ranges (FSRs) of 185 MHz and 285 MHz, respectively.
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"Performance Evaluation of the OFDM and SC-FDE Systems Using Continuous Phase Modulation." In Multi-Carrier Communication Systems with Examples in MATLAB. CRC Press, 2016. http://dx.doi.org/10.1201/b19273-11.

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van Wijk, Bernadette C. M. "Oscillatory Activity in Sensorimotor Function." In The Oxford Handbook of EEG Frequency. Oxford University Press, 2022. http://dx.doi.org/10.1093/oxfordhb/9780192898340.013.12.

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Abstract Amplitude modulations in alpha/mu, beta, and gamma frequency bands are robustly linked to several aspects of sensorimotor function. Even a simple finger tap induces a prominent suppression of alpha/mu and beta power that already starts during the preparation phase, continues during execution, and ends in a rebound after movement termination. An increase in gamma power can often be observed around movement onset in contralateral motor cortex. Recordings from other parts of the motor system such as the basal ganglia and motoneurons in the spinal cord indicate that these modulations and frequency bands are a hallmark of the sensorimotor network. Beta oscillations in particular are considered crucial in mediating the facilitation and inhibition of motor output. This is exemplified by elevated beta amplitudes in local field potential recordings from the subthalamic nucleus in patients with Parkinson’s disease. This chapter outlines current ideas about the role of individual frequency bands in motor control, how coherence estimates between recordings from distant sites have revealed functional networks, and what we know about the involvement of oscillatory activity in movement disorders.
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Majee, Prativa, Amit Kumar, and Debasis Nayak. "Host Factors: New Dimension in Antiviral Drug Targeting." In Recent Trends and The Future of Antimicrobial Agents - Part I. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815079609123010013.

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A spike in the emergence of several viruses is observed in the modern era, including the present SARS-CoV2 virus. The continuous emergence of new viral strains and growing resistance to the existing antiviral drugs urge new drug targets and novel antiviral candidates against them. Host genes utilized by the viruses for their proliferation, also known as host factors, have surfaced as a new antiviral strategy. If affordable to the host cells, targeting the host factors may prove beneficial in controlling viral infection. Host factors play an essential function in the viral life cycle, and modulating their functions would thus impact viral replication. Often, the interacting interfaces between the host and the viral proteins aim at antiviral interventions. This aspect of antiviral drug development is in its inception phase. However, with the advancement in molecular techniques identifying various viral host factors, this field is believed to have immense potential as an antiviral drug targeting strategy. This chapter briefly describes the host proteins' implication in viral biology and how they can be exploited to treat viral diseases.
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Conference papers on the topic "Continuous phase modulation"

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QU, SHOUXING, and S. FLEISHER. "Continuous phase frequency/phase modulation." In 14th International Communication Satellite Systems Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-1867.

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Fonseka, J. P., and T. R. Mao. "Coded nonlinear continuous phase modulation." In Eleventh Annual International Phoenix Conference on Computers and Communication [1992 Conference Proceedings]. IEEE, 1992. http://dx.doi.org/10.1109/pccc.1992.200561.

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Tam, Eddy C., Francis T. S. Yu, LAris Tanone, Shudong Wu, and Don A. Gregory. "Iterative phase-restoration technique using a continuous-phase SLM and a point diffraction interferometer." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.fp8.

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Early work with the liquid-crystal television (LCTV) in image-processing applications are mostly making use of the polarization property of the device. Even when the LCTV is used as a binary phase-only spatial light modulator, as shown by Davis et al.,1 the phase-modulation effect is actually obtained from the polarization-modulation property. However, besides the polarization-modulation property of a twisted nematic liquid crystal cell, there is also a birefringence effect inherently associated with the liquid-crystal cell.2 Therefore, it is possible for the twisted-nematic-based LCTV to operate as a phase-only spatial light modulator. We have measured this continuous phase-modulation property of an LCTV and found that a phase-modulation angle of more than 2π rad is obtained.
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Tam, Eddy C., Don A. Gregory, and James C. Kirsch. "Real-time optimum phase-only filters." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.ws3.

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Phase-only/binary-phase-only filters have been shown to give sharp correlation peaks in optical correlations. However, these filters transmit all the incoming light, including noise, to the correlation plane so that, theoretically speaking, under additive white noise corruption the signal-to-noise ratio is zero for these filters.1 The optimal phase-only/binary-phase-only filters recently studied1,2 incorporate the use of a supporting binary amplitude function that masks out certain regions of the filter and consequently increases the SNR ratio. While an optimal binary-phase-only filter can be implemented with a polarization modulation device (e.g., ternary filters displayed on a MOD2), simultaneous modulation of continuous phase and binary amplitude has not been shown. In this paper, we propose to use a twisted nematic liquid crystal SLM to implement a phase/amplitude filter. Continuous phase modulation can be achieved by modulating the LC below optical threshold. Besides, a pixel can be turned off (zero transmittance) by applying full voltage across the pixel and by placing an analyzer behind the modulator. This architecture can also be used to display binary-amplitude continuous-phase holograms, which generate better quality images.
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Sen, Cansu, and Emre Aktas. "Low complexity receivers for continuous phase modulation." In 2018 26th Signal Processing and Communications Applications Conference (SIU). IEEE, 2018. http://dx.doi.org/10.1109/siu.2018.8404512.

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Majzoobi, Layla, and Abbas Mohammadi. "Continuous phase modulation detection using TURBO-BLAST." In Electronic Systems Technology (Wireless VITAE). IEEE, 2009. http://dx.doi.org/10.1109/wirelessvitae.2009.5172452.

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Chen, Mingzhou, and Chris Dainty. "Remove optical vortices using continuous phase modulation." In Adaptive Optics: Methods, Analysis and Applications. OSA, 2009. http://dx.doi.org/10.1364/aopt.2009.aotha1.

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Perotti, A., S. Benedetto, and P. Remlein. "Spectrally Efficient Multiuser Continuous-Phase Modulation Systems." In ICC 2010 - 2010 IEEE International Conference on Communications. IEEE, 2010. http://dx.doi.org/10.1109/icc.2010.5501939.

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9

Tam, Eddy C., Francis T. S. Yu, Shingwai Wu, et al. "Implementation of kinoforms using a continuous-phase SLM." In OSA Annual Meeting. Optica Publishing Group, 1990. http://dx.doi.org/10.1364/oam.1990.fy4.

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Abstract:
Phase-only holograms, or kinoforms, have the advantage that all the incident light can be diffracted into the final image. Moreover, the space-bandwidth product requirement for displaying a kinoform is significantly lower than that of a sideband-type hologram. However, the lack of a programmable spatial-light modulator (SLM) that can provide a continuous and full range of phase modulation has limited the implementation of kinoform-to-binary phase-only holograms. Recently, we have verified that a commercially available liquid-crystal television SLM can provide the full range of phase modulation. Subsequently, we have studied the use of this device in displaying kinoforms. We have also implemented a phase-only filter in a joint-transform correlator for distortion-invariant pattern recognition to illustrate the applicability of this SLM.
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Hague, David A. "Continuous Phase Modulation of Phase Coded Transmit Waveforms using Multi-Tone Sinusoidal Frequency Modulation." In 2021 55th Asilomar Conference on Signals, Systems, and Computers. IEEE, 2021. http://dx.doi.org/10.1109/ieeeconf53345.2021.9723322.

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