Performance Analysis of a Spatial Modulation Aided Cooperative NOMA System

被引：2
作者：
Kumar, M. Hemanta [1 ]
Kumar, Alok [2 ]
Sharma, Sanjeev [3 ]
Kumar, Mogadala Vinod [4 ]
机构：
[1] Stuam Technol Pvt Ltd, Hyderabad 500084, India
[2] Jaypee Univ Informat Technol, Dept Elect & Commun Engn, Waknaghat 173234, India
[3] IIT BHU Varanasi, Dept Elect Engn, Varanasi 221005, India
[4] Dhanelkula Inst Engn & Technol, Dept ECE, Vijayawada 521139, India
来源：
IEEE COMMUNICATIONS LETTERS | 2024年 / 28卷 / 10期
关键词：
NOMA; Indexes; Symbols; Antennas; Bit error rate; Vectors; Receiving antennas; Spatial modulation; cooperative non-orthogonal multiple access (CNOMA); multiple-input multiple-output (MIMO); bit error rate (BER); inter-user interference (IUI); ergodic sum-rate; NONORTHOGONAL MULTIPLE-ACCESS; SPECTRAL EFFICIENCY;
D O I：
10.1109/LCOMM.2024.3452127
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, a novel communication scheme termed spatial modulation aided cooperative non-orthogonal multiple access (SM-CNOMA) is proposed for multiple-input and multiple-output (MIMO) downlink scenarios. In the SM-CNOMA system, the base station (BS) transmits information to three users across two time-slots, encompassing two near users (NUs) and a single far user (FU). Notably, NUs operate in a half-duplex mode and employ joint signal detection during the cooperative phase for decoding, and forward FU information through index modulation (IM). Bit error rate (BER) and ergodic sum-rate metrics are derived, by considering inter-user interference (IUI), of the proposed SM-CNOMA system. The impact of various system parameters, such as the number of transmit and receive antennas, is thoroughly analyzed within the SM-CNOMA framework. The presented results demonstrate that SM-CNOMA outperforms conventional CNOMA with three users and the precoded CNOMA (PCNOMA) systems. This letter contributes valuable insights into the potential benefits of SM-CNOMA in MIMO downlink communications, establishing its efficiency in mitigating interference and enhancing the overall system performance.
引用
收藏
页码：2273 / 2277
页数：5
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