Results 31 to 40 of about 85,381 (188)
SCMA codebook design based on resource block constellation
Tongxin xuebao, 2018 Aiming at the problems of typical sparse code multiple access codebook design scheme based on multidimensional mother constellation that the complexity is high and the minimum Euclidean distance between constellation points on resource blocks is ...
Xiaotao SHAO, Mingkun GUO, Wei YANG
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VQ codebook design using genetic algorithms
Electronics Letters, 1995 A codebook design approach for vector quantisation using genetic algorithms is proposed. This novel approach provides superior performance compared with the generalised Lloyd algorithm (GLA).
J.S. Pan, F.R. McInnes, M.A. Jack
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Sparse Regression Codes for Multi-terminal Source and Channel Coding [PDF]
, 2012 We study a new class of codes for Gaussian multi-terminal source and channel coding. These codes are designed using the statistical framework of high-dimensional linear regression and are called Sparse Superposition or Sparse Regression codes.
Tatikonda, Sekhar, Venkataramanan, Ramji
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Lexicographic Codebook Design for OFDM With Index Modulation [PDF]
IEEE Transactions on Wireless Communications, 2018 In this paper, we propose a novel codebook design scheme for orthogonal frequency-division multiplexing with index modulation (OFDM-IM) to improve system performance. The optimization process can be implemented efficiently by the lexicographic ordering principle.
Shuping Dang +2 more
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An Efficient Codebook Initialization Approach for LBG Algorithm
, 2011 In VQ based image compression technique has three major steps namely (i) Codebook Design, (ii) VQ Encoding Process and (iii) VQ Decoding Process. The performance of VQ based image compression technique depends upon the constructed codebook. A widely used
Pal, Arup Kumar, Sar, Anup
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ITM Web of Conferences, 2018 Codebook design is a key point in beam-forming which is necessary for millimeter Wave (mmWave) communications to compensate its huge path loss. In our study, we demonstrate the benefits of the number of antenna elements for beamforming; we focus on the ...
Abdo Adam Mohamed Ahmed +3 more
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NOMA Codebook Optimization by Batch Gradient Descent
IEEE Access, 2019 The non-orthogonal multiple access (NOMA) has the potential to improve the spectrum efficiency and the user connectivity compared to the orthogonal schemes. The codebook design is crucial for the the performance of the NOMA system.
Zhongwei Si, Shaoguo Wen, Bing Dong
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PhotonicsThe capacity performance of visible light communication (VLC) systems can be improved by using sparse code multiple access (SCMA). Since SCMA is a codebook-based multiple access scheme, the design of the codebook is crucial.
Jingxuan Dong +3 more
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Low complexity precoding codebook design based on DFRST for limited feedback precoded OSTBC systems
EURASIP Journal on Wireless Communications and Networking, 2017 Precoding techniques can be used in multiple input multiple output (MIMO) system to assign resources such as power and information optimally. This paper is concerned with limited feedback in precoded orthogonal space time block code (OSTBC) systems ...
Han Hai +3 more
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An iterative joint codebook and classifier improvement algorithm for finite-state vector quantization [PDF]
, 1994 A finite-state vector quantizer (FSVQ) is a multicodebook system in, which the current state (or codebook) is chosen as a function of the previously quantized vectors.
Effros, Michelle +3 more
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