Results 51 to 60 of about 85,381 (188)
Low-Complexity Codebook Design for SCMA-Based Visible Light Communication
IEEE Open Journal of the Communications Society, 2022 Sparse code multiple access (SCMA), as a code-domain non-orthogonal multiple access (NOMA) scheme, has received considerable research attention for enabling massive connectivity in future wireless communication systems.
Saumya Chaturvedi +4 more
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RIS-Measurements for Codebook Design
2024 20th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob)Reconfigurable Intelligent Surfaces (RIS) have gained significant attention for some time. Thanks to the possibility of individual steering of each reflecting element of the boards, they are envisaged to impact the propagation environment significantly. In this work, we concentrate on the practical verification of this concept.
Hatka, Paweł +5 more
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CG-SCMA Codebook Design Based on Maximized Euclidian Distance
Journal of Telecommunications and Information Technology, 2023 Sparse code multiple access (SCMA) is a multi-dimensional codebook based on a class of non-orthogonal multiple access (NOMA) technologies enabling the delivery of non-orthogonal resource elements to numerous users in 5G wireless communications without ...
Sura S. Mohamed, Hikmat N. Abdullah
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Limited Feedback in Multiple-Antenna Systems with One-Bit Quantization
, 2015 Communication systems with low-resolution analog-to-digital-converters (ADCs) can exploit channel state information at the transmitter (CSIT) and receiver.
Heath Jr, Robert W., Mo, Jianhua
core +1 more source
, 2018 Approximate nearest neighbor (ANN) search has achieved great success in many tasks. However, existing popular methods for ANN search, such as hashing and quantization methods, are designed for static databases only.
Tsang, Ivor W., Xu, Donna, Zhang, Ying
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Explicit Constructions of Quasi-Uniform Codes from Groups
, 2013 We address the question of constructing explicitly quasi-uniform codes from groups. We determine the size of the codebook, the alphabet and the minimum distance as a function of the corresponding group, both for abelian and some nonabelian groups ...
Oggier, Frederique, Thomas, Eldho K.
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An algorithm for binary codebook design based on the average bitmap replacement error (ABPRE)
مجلة بغداد للعلوم, 2011 In this paper, an algorithm for binary codebook design has been used in vector quantization technique, which is used to improve the acceptability of the absolute moment block truncation coding (AMBTC) method.
Baghdad Science Journal
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Very Low-Rate Variable-Length Channel Quantization for Minimum Outage Probability
, 2012 We identify a practical vector quantizer design problem where any fixed-length quantizer (FLQ) yields non-zero distortion at any finite rate, while there is a variable-length quantizer (VLQ) that can achieve zero distortion with arbitrarily low rate. The
Jafarkhani, Hamid, Koyuncu, Erdem
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Beamforming Codebook Compensation for Beam Squint with Channel Capacity Constraint
, 2017 Analog beamforming with phased arrays is a promising technique for 5G wireless communication in millimeter wave bands. A beam focuses on a small range of angles of arrival or departure and corresponds to a set of fixed phase shifts across frequency due ...
Cai, Mingming +2 more
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Constellation Evolution Mother Codebook Design in SCMA
, 2022 Abstract Sparse code multiple access (SCMA) is an emerging technology developed to meet the requirements of 5G and 6G communications and improve the spectral efficiency of systems. The key behind SCMA technology is the design of its codebook method, particularly the design of the mother codebook method, which forms the basis of excellent user ...
Fang Liu, Yongxin Feng
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