Low-Cost Uplink Sparse Code Multiple Access for Spatial Modulation

被引：22

作者：

Al-Nahhal, Ibrahim ^{[1
]}

Dobre, Octavia A. ^{[1
]}

Basar, Ertugrul ^{[2
]}

Ikki, Salama ^{[3
]}

机构：

[1] Mem Univ, Fac Engn & Appl Sci, St John, NF A1B 3X7, Canada

[2] Koc Univ, Dept Elect & Elect Engn, CoreLab, TR-34450 Istanbul, Turkey

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

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2019年 / 68卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Sparse code multiple access (SCMA); spatial modulation (SM); message passing algorithm (MPA);

D O I：

10.1109/TVT.2019.2930285

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Spatial modulation (SM) sparse codemultiple access (SCMA) systems provide high spectral efficiency (SE) at the expense of using a high number of transmit antennas. To overcome this drawback, this paper proposes a novel SM-SCMA system operating in uplink transmission, referred to as rotational generalized SM-SCMA (RGSM-SCMA). For the proposed system, the following are introduced, first, transmitter design and its formulation, second, maximum likelihood and maximum a posteriori probability decoders, and finally, practical low-complexitymessage passing algorithm and its complexity analysis. Simulation results and complexity analysis showthat the proposed RGSM-SCMA system delivers the same SE with significant savings in the number of transmit antennas, at the expense of close bit error rate and a negligible increase in the decoding complexity, when compared with SM-SCMA.

引用

页码：9313 / 9317

页数：5

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