OTFS-Based Downlink Network-Coded Multiple Access With Joint Amplitude-Phase Design

被引：0

作者：

Ren, Peng ^{[1
]}

Cao, Bohao ^{[1
]}

Xiang, Zheng ^{[1
]}

Yang, Long ^{[1
]}

Xu, Baoyi ^{[1
]}

Li, Yi ^{[1
]}

机构：

[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2024年 / 13卷 / 06期

关键词：

Symbols; Decoding; Throughput; Error probability; Power distribution; Downlink; Doppler effect; Network-coded multiple access; orthogonal time-frequency space; high Doppler; throughput; power distribution coefficient; relative phase offset; NOMA;

D O I：

10.1109/LWC.2024.3382152

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 designs an orthogonal time-frequency space (OTFS) enabled network-coded multiple access (NCMA) system for enhancing the throughput in high-mobility scenarios. For the designed system, the impact of power distribution and relative phase offset is theoretically analyzed and the upper-bound symbol error probability is derived into a closed-form expression. To further minimize the upper-bound symbol error probability, a joint amplitude-phase optimization scheme is proposed with using genetic algorithm. Finally, the simulation results reveal that the proposed scheme achieves significant throughput enhancement in high mobility scenarios.

引用

页码：1576 / 1580

页数：5

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