Results 21 to 30 of about 85,381 (188)
Codebook Design of Dense Small Cell Based on Short-term Channel Information Feedback [PDF]
Jisuanji gongcheng, 2019 The traditional codebook scheme uses Rayleigh fading channel as the model to design codebook,which will lose the gain of Line of Sight(LOS) component in dense small cell channel,and the traditional optimal codeword feedback overhead is large.To solve ...
SHI Zhenyu,LI Linsen
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Codebook Design for RIS-assisted Communications
, 2023 <p>In this paper, a 1-bit beamforming codebook for Reconfigurable Intelligent Surface (RIS) is designed for an indoor environment. Each codeword in a codebook is a phase pattern at RIS elements that reflects the signal to a desired angle. For a specific reflection angle, those codewords are computed that maximizes the signal-to-noise ratio (SNR ...
Arzad Alam Kherani +3 more
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A Multistage Method for SCMA Codebook Design Based on MDS Codes [PDF]
, 2019 Sparse Code Multiple Access (SCMA) has been recently proposed for the future generation of wireless communication standards. SCMA system design involves specifying several parameters.
da Silva, Bruno Fontana +3 more
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Improvements on stochastic vector quantization of images [PDF]
, 1993 A novel nonadaptive fixed-rate vector quantizer encoding scheme is presented, and preliminary results are shown. The design of the codebook has been based on a stochastic approach in order to match a previously defined model for the image to be encoded ...
Torres Urgell, Lluís
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Beam Codebook Design for 5G mmWave Terminals
IEEE Access, 2019 A beam codebook of 5G millimeter wave (mmWave) for data communication consists of multiple high-peak-gain beams to compensate the high pathloss at the mmWave bands.
Jianhua Mo +8 more
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Sparse Code Multiple Access: Potentials and Challenges
IEEE Open Journal of the Communications Society, 2021 The massive connectivity is among other unprecedented requirements which are expected to be satisfied in order to follow the perpetual increase of connected devices in the era of Internet of Things.
Manel Rebhi +3 more
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Robust MMSE Precoding Strategy for Multiuser MIMO Relay Systems with Switched Relaying and Side Information [PDF]
, 2013 In this work, we propose a minimum mean squared error (MMSE) robust base station (BS) precoding strategy based on switched relaying (SR) processing and limited transmission of side information for interference suppression in the downlink of multiuser ...
Cai, Yunlong +3 more
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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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A Dimension Distance-Based SCMA Codebook Design
IEEE Access, 2017 For sparse code multiple access (SCMA) with traditional codebooks, the initial information of message passing algorithm (MPA) receiver is easily susceptible to noise and multipath fading, and the convergence reliability of the first detected user in each
Cheng Yan, Guixia Kang, Ningbo Zhang
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