Results 11 to 20 of about 160,468 (296)
Adaptive Coding and Modulation Scheme for Ka Band Space Communications [PDF]
Journal of Astronomy and Space Sciences, 2010 Rain attenuation can cause a serious problem that an availability of space communication link on Ka band becomes low. To reduce the effect of rain attenuation on the error performance of space communications in Ka band, an adaptive coding and ...
Jaeyoon Lee, Dongweon Yoon, Wooju Lee
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Simple Gray coding and LLR calculation for MDS modulation systems [PDF]
, 2022 Due to dependence between codeword elements, index modulation (IM) and related modulation techniques struggle to provide simple solutions for practical problems such as Gray coding between information bits and constellation points; and low-complexity log-
Justin P. Coon, Ferhat Yarkin
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Bandwidth-Efficient Wireless Multimedia Communications [PDF]
, 1998 Commencing with the brief history of mobile communications and the portrayal of the basic concept of wireless multimedia communications, the implications of Shannon’s theorems regarding joint source and channel coding for wireless communications are ...
Hanzo, L.
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Computer-Generated Holography Methods for Data Page Reconstruction Using Phase-Only Medium
Applied Sciences, 2023 Achievements in the field of high-speed spatial modulation electrooptic components provide the possibility to create perspective optical-digital diffractive systems for information storage and processing that outperform modern electronic counterparts by ...
Timur Z. Minikhanov +4 more
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BOCC: A new modulation based on chirp subcarriers for future BeiDou LEO navigation‐augmented signal
Electronics Letters, 2021 For improving the anti‐interference performance and compatibility of a navigation‐augmented signal in future BeiDou Global Navigation Satellite Systems, a new modulation based on chirp subcarriers is proposed, named binary offset chirp carrier modulation,
Xin Zhao +2 more
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Electronics Letters, 2022 This letter proposes a measurement technique for the relative phase of a 5G new radio (NR) signal. The total radiated power (TRP) is measured to evaluate wireless equipment.
Dong‐Woo Kim +4 more
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Performance analysis of hybrid MPAPM technique for deep‐space optical communications
IET Communications, 2021 A hybrid multiple pulse amplitude and position modulation (H‐MPAPM) scheme based on gradual multi‐pulse pulse‐position modulation (G‐MPPM) and multi‐level pulse amplitude modulation (M‐PAM) schemes is proposed for deep‐space optical communication.
Sadiq Idris +2 more
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A novel channel prediction method for MIMO‐OFDM in high‐speed environment
IET Communications, 2021 The OFDM system with multiple transceiver antennas is attractive to increase the spectrum or energy efficiency. Depending on the channel state information (CSI), precoding techniques offer array and multiplexing gain in such systems. However, if terminal
Ruiqi Zhang, Bo Ai
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Hybrid neural coded modulation: Design and training methods
ICT Express, 2022 We propose a hybrid coded modulation scheme which composes of inner and outer codes. The outer-code can be any standard binary linear code with efficient soft decoding capability (e.g. low-density parity-check (LDPC) codes). The inner code is designed using a deep neural network (DNN) which takes the channel coded bits and outputs modulated symbols ...
Sung Hoon Lim +4 more
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Network coded modulation for two-way relaying [PDF]
, 2011 Network coding compresses multiple traffic flows with the aid low-complexity algebraic operations, hence holds the potential of significantly improving both the power and bandwidth efficiency of wireless networks.
Chen, Wei +5 more
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