Spatial Modulation-Aided Cooperative NOMA: Performance Analysis and Comparative Study

被引：86
作者：
Li, Qiang [1 ,2 ]
Wen, Miaowen [1 ,2 ]
Basar, Ertugrul [3 ]
Poor, H. Vincent [4 ]
Chen, Fangjiong [1 ]
机构：
[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
[2] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Shaanxi, Peoples R China
[3] Koc Univ, Dept Elect & Elect Engn, Commun Res & Innovat Lab, TR-34450 Sariyer, Turkey
[4] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
来源：
IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING | 2019年 / 13卷 / 03期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
Bit error rate; cooperative relaying; non-orthogonal multiple access; spatial modulation; sum rate; NONORTHOGONAL MULTIPLE-ACCESS; SYSTEMS; CHALLENGES; NETWORKS;
D O I：
10.1109/JSTSP.2019.2898099
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：
The combination of non-orthogonal multiple access (NOMA) and multiple-input multiple-output (MIMO) signaling is capable of providing significantly improved spectral efficiency and effective multiple access. However, conventional MIMO-NOMA entails significantly increased power consumption and implementation complexity. Inspired by the essence of spatial modulation (SM), in this paper, a novel three-node cooperative relaying system (CRS) using SM-aided NOMA, termed CRS-SM-NOMA, is proposed, in which the messages for two users are conveyed by two different information-hearing units of SM. As the reference scheme, conventional CRS-NOMA is further re-investigated with multiple receive antennas. Besides the achievable rate, which is adopted by most of the existing NOMA works as the performance metric, the bit error rate (BER) of CRS-SM-NOMA and CRS-NOMA is analyzed assuming maximum-likelihood detection. Approximate bit error probability expressions are derived in closed form for both users. Simulation results verify the analysis and show that the proposed CRS-SM-NOMA outperforms conventional CRS-NOMA and SM-OMA in terms of the BER as well as ergodic sum rate.
引用
收藏
页码：715 / 728
页数：14
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