Results 51 to 60 of about 157 (142)

Inter-Multilevel Super-Orthogonal Space-Time Coding Scheme for Reliable ZigBee-Based IoMT Communications. [PDF]

open access: yesSensors (Basel), 2022
Ma SC   +7 more
europepmc   +1 more source

Concatenated space-time block coding with asymmetric MPSK TCM

open access: yesTongxin xuebao, 2010
The field of concatenated space-time block coding (inner) with trellis coded modulation (outer) has recently attracted interest as a means of jointly considering the error correction coding gain and diversity gain possible without bandwidth expansion and
AO Jun1   +3 more
doaj   +2 more sources

A Dimension Distance-Based SCMA Codebook Design

open access: yesIEEE 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
doaj   +1 more source

Design of SCMA codebook based on chaotic signal and system performance analysis

open access: yesTongxin xuebao, 2019
Sparse code multiple access (SCMA) technology is one of the multiple access technology schemes for the new generation of 5G.In order to solve the transmission requirement of massive users,the logistic chaos sequence was proposed instead of the random ...
Geng ZHAO, Yanyan MA, Yingjie MA
doaj   +2 more sources

Golden Space-Time Trellis Coded Modulation

open access: yes, 2006
In this paper, we present a concatenated coding scheme for a high rate $2\times 2$ multiple-input multiple-output (MIMO) system over slow fading channels. The inner code is the Golden code \cite{Golden05} and the outer code is a trellis code. Set partitioning of the Golden code is designed specifically to increase the minimum determinant.
Hong, Yi   +2 more
openaire   +2 more sources

Strategy for Non-Orthogonal Multiple Access and Performance in 5G and 6G Networks. [PDF]

open access: yesSensors (Basel), 2023
Al-Dulaimi OMK   +3 more
europepmc   +1 more source

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