Queuing Analysis for Multiple-Antenna Cognitive Radio Wireless Networks With Beamforming

被引：5
|
作者：
Agrawal, Shivani [1 ]
Rana, Vishal [2 ]
Jagannatham, Aditya K. [2 ]
机构：
[1] Univ Calif San Diego, Dept Comp Sci & Engn, La Jolla, CA 92093 USA
[2] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India
来源：
IEEE SIGNAL PROCESSING LETTERS | 2017年 / 24卷 / 03期
关键词：
Average transmission time; cognitive radio networks; M/G/1 queuing system; zero-forcing (ZF) beamforming;
D O I：
10.1109/LSP.2017.2659541
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 letter presents an analysis of the queuing performance of a multiple-antenna cognitive radio system employing downlink beamforming. The paradigm of multiantenna zero-forcing beamforming is employed to null the interference at the primary users. A closed-form expression is derived for the probability density of successful packet transmission time followed by results for the average waiting and transmission times in anM/G/1 secondary user queuing system. Furthermore, this framework and the results are also extended to scenarios with ARQ and partial channel state information at the secondary transmitter. Numerical simulation results are presented to validate the theoretical performance analysis.
引用
收藏
页码：334 / 338
页数：5
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