Security Performance Analysis for an OTFS-Based Joint Unicast-Multicast Streaming System

被引：5
|
作者：
Tie, Zhuangzhuang [1 ]
Shi, Jia [1 ]
Li, Zan [1 ]
Li, Shuangyang [2 ]
Liang, Wei [3 ]
机构：
[1] Xidian Univ, Key Lab Integrated Serv Networks, Xian 710071, Peoples R China
[2] Univ New South Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
[3] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Peoples R China
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2022年 / 70卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Unicast; Security; Doppler effect; Symbols; Communication system security; Transforms; Delays; OTFS; unicast-multicast; physical-layer security; doubly-dispersive channel; CHANNEL ESTIMATION; MULTIPLE-ACCESS; TRANSMISSION; INTERFERENCE; NETWORKS; DOPPLER; SCHEME; NOMA; OFDM;
D O I：
10.1109/TCOMM.2022.3198427
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper investigates the security performance of a joint unicast-multicast streaming system, where different users present heterogeneous mobilities. The orthogonal time frequency space (OTFS) scheme is employed to overcome severe Doppler effect caused by high mobility. The closed-form expression is derived for the maximum secrecy rate of unicast transmission with high privacy. Furthermore, the positive secure capacity probability (PSCP) of unicast transmission is also obtained and analyzed. Our analytical results show that compared with high-mobility eavesdroppers, low-mobility eavesdroppers pose a greater threat to unicast secrecy. Moreover, when the outage probability of unicast is greater than 1/2, more time frequency (TF) resources should be allocated to unicast, in order to guarantee the security performance of unicast.
引用
收藏
页码：6764 / 6777
页数：14
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