On the effective capacity region for cognitive radio multiple access channels

被引：12
|
作者：
Xu, Ding [1 ]
Li, Qun [2 ]
机构：
[1] Nanjing Univ Posts & Telecommun, Wireless Commun Key Lab Jiangsu Prov, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Univ Posts & Telecommun, Sch Comp Sci & Technol, Nanjing, Jiangsu, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2015年 / 69卷 / 06期
关键词：
Cognitive radio; Multiple access channels; Effective capacity; SUM-RATE; QUALITY;
D O I：
10.1016/j.aeue.2015.02.016
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 effective capacity region for a cognitive radio multiple access channel (CR-MAC) under the interference power constraint to protect the primary user (PU) transmission. A closed-form greedy power allocation policy which encourages exclusive transmission of the secondary users (SUs) is proposed to obtain an inner effective capacity region boundary. It is shown that the proposed policy is practically optimal for stringent interference power constraint and loose delay quality-of-service (QoS) constraint and the obtained inner bound on the effective capacity is thus tight. (C) 2015 Elsevier GmbH. All rights reserved.
引用
收藏
页码：958 / 961
页数：4
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