基于NOMA技术的D2D通信中联合子信道与功率分配的方案

中图分类号：TN929.5
文献标志码：A
DOI: 10.16157/j.issn.0258-7998.234062
引用格式： 顾蔡晨，王斌，黄纯华，等. 基于NOMA的双向中继D2D通信容量扩展[J]. 电子技术应用，2023，49(11)：83-87.

Capacity scaling for two-way relay-assisted D2D communication based on NOMA

Abstract： A two-way relay-assisted device to device (D2D) communication system using non-orthogonal multiple access (NOMA) is proposed to solve the capacity scaling for D2D communication system. Firstly, the signal to interference noise ratio (SINR) of each signal is analyzed, and according to the cumulative distribution function (CDF) and probability density function (PDF) of each signal, the solution form of the ergodic sum capacity of the system is obtained. In addition, the ergodic sum capacity of orthogonal multiple access (OMA) system is analyzed and compared with NOMA system. Simulation results show that compared with OMA system, the achievable capacity of the system can be improved when NOMA is used, and the two-way relay scheme can make the system obtain higher capacity than the traditional one-way relay scheme.

Key words : device to device （D2D）；non-orthogonal multiple access （NOMA）；two-way relay；ergodic sum capacity