Throughput analysis for relay-aided interference channelin cognitive radio networks

被引：0
作者：
Lou J. [1 ]
Luo T. [1 ]
Yue G. [1 ]
机构：
[1] School of Information and Communication Engineering, Beijing University of Posts and Telecommunications
来源：
High Technology Letters | 2011年 / 17卷 / 04期
关键词：
Achievable sum rate; Cognitive radio(CR); Interference channel; Relay; Throughput;
D O I：
10.3772/j.issn.1006-6748.2011.04.003
中图分类号：
学科分类号：
摘要：
This paper considers a two-user Gaussian interference channel aided by a single relay. Two source-destination pairs and the relay share a single common channel, and the relay assists both sources in communicating the messages to their respective destinations. This paper mainly focuses on the "amplify-and-forward" (AF) relaying strategy for relay, and derives upper bound and lower bound on achievable sum rate accordingly. Next, the application of the above model in cognitive radio (CR) networks is considered. The schemes that can ensure the coexistence of the secondary user with the primary user are proposed, in the sense that there is no rate degradation for the primary user due to sharing of the channel. Further, the throughput of the secondary user in different communication scenarios is investigated. © by HIGH TECHNOLOGY LETTERS PRESS.
引用
收藏
页码：344 / 349
页数：5
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