Results 21 to 30 of about 4,217,638 (167)
Photonics, 2023 Ocean turbulence is an important factor affecting the development of underwater wireless optical communication (UWOC). To improve the error characteristics of the underwater optical communication system, we propose a differential detection-based multi ...
Tong Wang +3 more
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Capacity evaluation of LoS-optimised and standard MIMO antenna arrays at 5.2 GHz [PDF]
, 2007 In this paper, the channel capacity of MIMO communication systems is evaluated from measurements in a home environment at 5.2 GHz. The capacity performance of a novel line-of-sight (LoS)-optimised antenna array architecture is investigated and compared ...
Sarris, I +3 more
core +1 more source
Spectral Efficiency Improvement and Power Control Optimization of Massive MIMO Networks
IEEE Access, 2021 Higher requirements must be put forward about wireless signal transmission in harsh environments. Energy loss mitigation, channel estimation, noise interference reduction demands high quality of service in wireless communication.
Xiu Zhang, Hao Qi, Xin Zhang, Liang Han
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Angular Circle Array Multiple Input Multiple Output Underwater Optical Wireless Communications
PhotonicsThis paper constructs a simulation platform for underwater wireless optical single-input single-output (SISO) communication systems and quantitatively evaluates communication performance indicators.
Zhuoqi Chen +3 more
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A Survey of Collocated MIMO Radar
Leida xuebao, 2022 As a novel radar system, the Multiple-Input Multiple-Output (MIMO) radar with waveform diversity has demonstrated excellent performance in several aspects, including target detection, parameter estimation, radio frequency stealth, and anti-jamming ...
Zishu HE +6 more
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International Journal of Distributed Sensor Networks, 2011 The energy efficiency optimization of the binary power control scheme for MIMO-OFDM wireless communication systems is formulated, and then a global optimization solution of power allocation is derived.
Yuming Wang +4 more
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Joint parameter estimation employing coherent passive MIMO radar
The Journal of Engineering, 2019 Passive multiple-input multiple-output radar is studied for the problem of joint estimation of target location and velocity. A general case is considered, where the signals of opportunity may be non-orthogonal and the clutter-plus-noise may be correlated.
Liming Wang +3 more
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General space-time clutter model for multi-channel airborne radar
The Journal of Engineering, 2019 Ground clutter of looking-down airborne radar is spread in Doppler because of the platform motion, and thus the interested moving targets may be masked by the ground clutter.
Li Xinzhe +3 more
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Modeling of wide-band MIMO radio channels based on NLoS indoor measurements [PDF]
, 2004 In this paper, we first verify a previously proposed Kronecker-structure-based narrow-band model for nonline-of-sight (NLoS) indoor multiple-input-multiple-output (MIMO) radio channels based on 5.2-GHz indoor MIMO channel measurements.
OTTERSTEN, Björn +24 more
core +1 more source
Simplified LLR algorithm for m-QAM demodulation
The Journal of Engineering, 2019 Here, a simplified algorithm to calculate log-likelihood ratio (LLR) for m-QAM demodulation is proposed. Traditional method calculating LLR for m-QAM demodulation is supposed to do distance computing between any two constellation points so that the high ...
Xianle Cao, Yi Liu, Dongfang Hu
doaj +1 more source