Results 1 to 10 of about 18,141,497 (258)
Information, 2017 A turbo coded cooperative orthogonal frequency division multiplexing (OFDM) with multiple-input multiple-output (MIMO) antennas scheme is considered, and its performance over a fast Rayleigh fading channel is evaluated.
Rahim Umar, Fengfan Yang, Shoaib Mughal
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Dianxin kexue, 2021 Space-time shift keying (STSK) is a modulation scheme used in multi-input multi-output (MIMO) communication systems.It uses a pre-designed dispersion matrix set (DMS) to realize the flexible design of the system between multiplexing and diversity.An ...
Xiaoping JIN +3 more
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A Soft-Output STBC Decoder for Aeronautical Telemetry
Journal of Telecommunications and Information Technology, 2020 Alamouti encoding is a well-known space time block encoding technique used to improve the received signal quality in Rayleigh fading channels. In aeronautical telemetry, this encoding technique is applied to shaped offset quadrature phase shift keying ...
Yves Louet +2 more
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Guangtongxin yanjiu, 2023 To simplify the structure of real-time coherent Free-Space Optical (FSO) / wireless systems and reduce costs, this paper implements a low-cost FSO system based on bandpass Delta-Sigma Modulation (DSM) technology. A 256-ary Quadrature Amplitude Modulation
WANG Zhong-zhong, AO Xue-yuan, YANG Qi
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Concatenated space-time block coding with asymmetric MPSK TCM
Tongxin xuebao, 2010 The field of concatenated space-time block coding （inner） with trellis coded modulation （outer） has recently attracted interest as a means of jointly considering the error correction coding gain and diversity gain possible without bandwidth expansion and
AO Jun1 +3 more
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IEEE Photonics Journal, 2018 In this paper, we have experimentally demonstrated faster-than-Nyquist carrierless amplitude and phase modulation quadrature phase-shift keying visible light communication system over 1.5-m free space transmission.
Shangyu Liang +4 more
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Performance study on a novel VBLAST modulation scheme under SUC detection
Tongxin xuebao, 2009 A new modulation scheme was proposed to deal with the error propagation（EP） existing during the successive cancellation（SUC） detection in the VBLAST（vertical Bell labs layered space-time） system.In the scheme,the former demodulated signal was designed to
JIANG Zhan-jun +3 more
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DESIGN OF SPACE TIME TRELLIS CODED OFDM
Journal of EngineeringSpace Time Trellis Code (STTC) is a technique that can be used to improve the performance of the Orthogonal Frequency Division Multiplexing (OFDM) system over wireless channels by providing both coding gain and diversity gain.
S. M. Abbas
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Two Decades of MIMO Design Tradeoffs and Reduced-Complexity MIMO Detection in Near-Capacity Systems
IEEE Access, 2017 A pair of salient tradeoffs have driven the multiple-input multiple-output (MIMO) systems developments. More explicitly, the early era of MIMO developments was predominantly motivated by the multiplexing-diversity tradeoff between the Bell Laboratories ...
Chao Xu +5 more
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Time-Varying Communication Channel High Altitude Platform Station Link Budget and Channel Modeling
Information, 2018 Because of the high BER (Bit Error Rate), low time delay and low channel transmission efficiency of HAPS (High Altitude Platform Station) in the near space. The link budget of HAPS and channel model are proposed in this paper.
Xiaoyang Liu +3 more
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