Results 71 to 80 of about 46,201 (198)
Simplification of the Gram Matrix Eigenvalue Problem for Quadrature Amplitude Modulation Signals. [PDF]
Entropy (Basel), 2022 Miyazaki R, Wang T, Usuda TS.
europepmc +1 more source
Joint quadrature modulation and network coding for cooperative Hybrid-ARQ
Tongxin xuebao, 2013 In order to improve the transmission efficiency of quadrature modulated cooperative diversity system,the joint network coding and quadrature modulated scheme for coo ve hybrid automatic repeat request (NC-QM-HARQ)was proposed.By introducing network ...
Xiao-ye SHI +3 more
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Ternary Trellis Coded Modulation
IEEE Access, 2019 Ternary trellis coded modulation (TTCM) is introduced. This combines triangular signal constellations with ternary convolutional codes. The performance of TTCM is presented and compared with binary trellis coded modulation (BTCM) which employs square ...
Mahmoud Abdelaziz, T. Aaron Gulliver
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MATEC Web of Conferences, 2016 Consumer demand for high speed data communication system is increasing day by day. However the major challenges for wireless communication system are Inter Symbol Interference (ISI) and Inter Carrier Interference (ICI) that occur during data transmission.
Sarnin Suzi Seroja +2 more
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Signal Constellation Design for Cross-Phase Modulation Dominated Channels
IEEE Photonics Journal, 2015 In this paper, we introduce an optimal signal constellation design algorithm suitable for wavelength-division-multiplexed systems dominated by cross-phase modulation (XPM), which is called XPM-OSCD.
Tao Liu, Ivan B. Djordjevic
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M-ary Coded Mouldation Assisted Genetic Algorithm Based Multiuser Detection for CDMA Systems
, 2003 In this contribution we propose a novel M-ary Coded Modulation assisted Genetic Algorithm based Multiuser Detection (CM-GA-MUD) scheme for synchronous CDMA systems.
Hanzo, L., Ng, S.X., Yen, K.
core
Tongxin xuebao, 2007 By introducing multiple levels quadrature amplitude modulation and matrix transform method,a multiple am-plitudes differential space-time coding（DSTC） scheme was developed.The scheme can avoid the performance loss of conventional DSTC schemes based on ...
YU Xiang-bin1 +2 more
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Quantum-limited measurements of optical signals from a geostationary satellite
, 2017 The measurement of quantum signals that traveled through long distances is of fundamental and technological interest. We present quantum-limited coherent measurements of optical signals, sent from a satellite in geostationary Earth orbit to an optical ...
Bayraktar, Ömer +15 more
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PhotonicsThe 6G era necessitates advanced multiplexing techniques that fully utilize various physical dimensions, including time, frequency, polarization, and space to enhance the achievable bitrate per wavelength and satisfy growing demands for capacity and ...
Xiaoling Zhang, Yong Geng
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Design, comparative study and analysis of CDMA for different modulation techni
Egyptian Informatics Journal, 2015 In this work, we have design a MIMO–CDMA using 4 ∗ 8 antennas with the combination of MMSE (Minimum Mean square Error Equalizer) for BPSK (Binary Phase shift Keying), QPSK (Quadrature Phase Shift Keying), 16-QAM, 64-QAM and 256-QAM (Quadrature Amplitude ...
Arun Kumar, Manisha Gupta
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