Outage analysis of aerial semi-grant-free NOMA systems  

作　　者：Hongjiang Lei Chen Zhu Ki-Hong Park Imran Shafique Ansari Weijia Lei Hong Tang Kyeong Jin Kim 

机构地区：[1]School of Communications and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China [2]Chongqing Key Lab of Mobile Communications Technology,Chongqing 400065,China [3]CEMSE Division,King Abdullah University of Science and Technology(KAUST),Thuwal 23955-6900,Saudi Arabia [4]James Watt School of Engineering,University of Glasgow,Glasgow G128QQ,United Kingdom [5]Samsung Research America(SRA),Plano,TX,75023,USA

出　　处：《Digital Communications and Networks》2024年第5期1529-1541,共13页数字通信与网络(英文版)

基　　金：supported by the National Natural Science Foundation of China under Grant 61971080;the Open Fund of the Shaanxi Key Laboratory of Information Communication Network and Security under Grant ICNS201807;。

摘　　要：In this paper,we analyze the outage performance of Unmanned Aerial Vehicles(UAVs)-enabled downlink Non-Orthogonal Multiple Access(NOMA)communication systems with the Semi-Grant-Free(SGF)transmission scheme.A UAV provides coverage services for a Grant-Based(GB)user and one Grant-Free(GF)user is allowed to utilize the same channel resource opportunistically.The analytical expressions for the exact and asymptotic Outage Probability(OP)of the GF user are derived.The results demonstrate that no-zero diversity order can be achieved only under stringent conditions on users'quality of service requirements.Subsequently,an efficient Dynamic Power Allocation(DPA)scheme is proposed to relax such data rate constraints.The analytical expressions for the exact and asymptotic OP of the GF user with the DPA scheme are derived.Finally,Monte Carlo simulation results are presented to validate the correctness of the derived analytical expressions and demonstrate the effects of the UAV's location and altitude on the OP of the GF user.

关 键 词：Unmanned aerial vehicle Non-orthogonal multiple access Semi-grant-free Outage probability 

分 类 号：TN9[电子电信—信息与通信工程]