Results 51 to 60 of about 12,216,998 (317)
Limited Feedback Precoding for Massive MIMO
International Journal of Antennas and Propagation, 2013 The large-scale array antenna system with numerous low-power antennas deployed at the base station, also known as massive multiple-input multiple-output (MIMO), can provide a plethora of advantages over the classical array antenna system.
Xin Su +6 more
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Adaptive Codebook Design and Assignment for Energy Saving in SCMA Networks
IEEE Access, 2017 Sparse code multiple access (SCMA) has been proposed as a candidate air interface (AI) technique for 5G wireless networks. However, the existing resource management schemes with predesigned SCMA codebooks cannot fully exploit user diversities in the ...
Daosen Zhai
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Deep Learning-Based Codebook Design for Code-Domain Non-Orthogonal Multiple Access: Approaching Single-User Bit-Error Rate Performance [PDF]
IEEE Transactions on Cognitive Communications and Networking, 2021 A general form of codebook design for code-domain non-orthogonal multiple access (CD-NOMA) can be considered equivalent to an autoencoder (AE)-based constellation design for multi-user multidimensional modulation (MU-MDM).
Minsig Han +3 more
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A Codebook Design for FD-MIMO Systems With Multi-Panel Array [PDF]
IEEE Transactions on Vehicular Technology, 2022 In this work, we study codebook designs for full-dimension multiple-input multiple-output (FD-MIMO) systems with a multi-panel array (MPA). We propose novel codebooks which allow precise beam structures for MPA FD-MIMO systems by investigating the ...
Zhilin Fu +4 more
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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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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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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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A Novel Scheme for the Construction of the SCMA Codebook
IEEE Access, 2022 As a code-domain non-orthogonal multiple access technique, sparse code multiple access (SCMA) is considered as a promising technique for future wireless Internet of Things (IoT) networks. The minimum Euclidean distance (MED) and minimum product distance (
Tuofeng Lei +4 more
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