Design and Analysis of Spatial Modulation Based Orthogonal Time Frequency Space System
Design and Analysis of Spatial Modulation Based Orthogonal Time Frequency Space System
复制标题
基于空间调制的正交时频空间系统的设计与分析
DOI：
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发表时间：
2021
影响因子：
4.1
通讯作者：
Yuan Dongfeng
中科院分区：
文献类型：
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作者：
Yang Yingchao;Bai Zhiquan;Pang Ke;Ma Piming;Zhang Haixia;Yang Xinghai;Yuan Dongfeng
本文设计了一种基于空间调制的正交时频空间（SMOTFS）系统，充分利用空间调制（SM）和正交时频空间（OTFS）传输的特点，提高传输可靠性，满足未来移动通信的高传输速率和高速需求。介绍了SM-OTFS系统的详细系统设计和信号处理。利用联合边界技术和矩源函数，导出了SM-OTFS系统在延迟多普勒信道上的平均符号误码率（ASER）和平均误码率（ABER）的封闭表达式。同时，对系统的复杂性进行了评估。数值结果验证了SM- otfs系统在高信噪比（SNR）区域ASER和ABER理论分析的正确性，并表明在移动条件下，特别是在高迁移场景下，SM- otfs系统在复杂度增加有限的情况下优于传统基于SM的正交频分复用（SM- ofdm）系统。
In this paper, we design a spatial modulation based orthogonal time frequency space (SMOTFS) system to achieve improved transmission reliability and meet the high transmission rate and highspeed demands of future mobile communications, which fully utilizes the characteristics of spatial modulation (SM) and orthogonal time frequency space (OTFS) transmission. The detailed system design and signal processing of the SM-OTFS system have been presented. The closed-form expressions of the average symbol error rate (ASER) and average bit error rate (ABER) of the SM-OTFS system have been derived over the delay-Doppler channel with the help of the union bounding technique and moment-generating function (MGF). Meanwhile, the system complexity has been evaluated. Numerical results verify the correctness of the theoretical ASER and ABER analysis of the SM-OTFS system in the high signal-to-noise ratio (SNR) regions and also show that the SM-OTFS system outperforms the traditional SM based orthogonal frequency division multiplexing (SM-OFDM) system with limited complexity increase under mobile conditions, especially in high mobility scenarios.