Design and Analysis of Spatial Modulation Based Orthogonal Time Frequency Space System  

作　　者：Yingchao Yang Zhiquan Bai Ke Pang Piming Ma Haixia Zhang Xinghai Yang Dongfeng Yuan 

机构地区：[1]Shandong Provincial Key Lab.of Wireless Communication Technologies,School of Information Science and Engineering,Shandong University,Qingdao 266237,China [2]Shandong Provincial Key Lab.of Wireless Communication Technologies,School of Control Science and Engineering,Shandong University,Jinan 250061,China [3]College of Information Science and Technology,Qingdao University of Science and Technology,Qingdao 266061,China

出　　处：《China Communications》2021年第8期209-223,共15页中国通信（英文版）

基　　金：in part by the National Natural Science Foundation of China under Grant 61771291,Grant 61671278;in part by the Key Research and Development Project of Shandong Province under Grant 2018GGX101009,Grant 2019TSLH0202,Grant 2020CXGC010109;in part by the National Nature Science Foundation of China for Excellent Young Scholars under Grant 61622111;in part by the Project of International Cooperation and Exchanges NSFC under Grant 61860206005.

摘　　要：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.

关 键 词：orthogonal time frequency space(OTFS) spatial modulation based OTFS(SM-OTFS) delay-Doppler domain average symbol error rate(ASER) average bit error rate(ABER) 

分 类 号：TN929.5[电子电信—通信与信息系统]