Joint Optimal Sensing Time and Power Allocation for Amplify-and-Forward Cognitive Relay Networks

被引：2
|
作者：
Yu, Huogen [1 ]
Tang, Wanbin [1 ]
Li, Shaoqian [1 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Sichuan, Peoples R China
来源：
IEEE COMMUNICATIONS LETTERS | 2012年 / 16卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Sensing time; power allocation; amplify-and-forward; cognitive relay networks; COOPERATIVE RELAY; RADIO;
D O I：
10.1109/LCOMM.2012.100812.121015
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this letter, we investigate the joint optimization of sensing time and power allocation for amplify-and-forward cognitive relay networks. By jointly considering the sensing slot and the data transmission slot, the optimization problems are respectively formulated to maximize the average network throughput and minimize the approximate outage probability of secondary transmission under the average transmit power constraint of secondary users and the average interference power constraint of primary user. The optimal algorithms are developed to acquire the optimal sensing time and power allocation. Simulation results demonstrate that significant improvements in the average throughput and outage behavior are achieved through the joint optimization.
引用
收藏
页码：1948 / 1951
页数：4
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