Quadrature Spatial Modulation Decoding Complexity: Study and Reduction

被引：31

作者：

Al-Nahhal, Ibrahim ^{[1
]}

Dobre, Octavia A. ^{[1
]}

Ikki, Salama S. ^{[2
]}

机构：

[1] Mem Univ, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada

[2] Lakehead Univ, Dept Elect Engn, Thunder Bay, ON P7B 5E1, Canada

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2017年 / 6卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Multiple-input multiple-output (MIMO); spatial modulation (SM); quadrature spatial modulation (QSM); sphere decoder (SD); complexity analysis;

D O I：

10.1109/LWC.2017.2694420

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This letter presents the computational complexity reduction of the maximum likelihood-quadrature spatial modulation ( QSM-ML) decoder as compared with the conventional SM-ML. Furthermore, a novel reduced-complexity (RC) sphere decoder algorithm, especially designed for QSM decoders, is proposed. It is shown that the QSM-RC algorithm achieves the optimum QSM-ML bit error ratio performance. Using Monte Carlo simulations and mathematical analysis, at the same spectral efficiency and with notable superior performance, it is shown that the QSM-ML and QSM-RC decoders provide at least 50% and up to 96% reduction in the number of visited nodes, respectively, compared to the SM-ML decoder.

引用

页码：378 / 381

页数：4

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