Limits on communications in a cognitive radio channel

被引：103

作者：

Devroye, Natasha ^{[1
]}

Mitran, Patrick ^{[1
]}

Tarokh, Vahid ^{[1
]}

机构：

[1] Harvard Univ, Div Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

IEEE COMMUNICATIONS MAGAZINE | 2006年 / 44卷 / 06期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/MCOM.2006.1668418

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：

In this article we review FCC secondary markets initiatives and how smart wireless devices could be used to increase spectral efficiency. We survey the current proposals for cognitive radio deployment, and present a new, potentially more spectrally efficient model for a wireless channel employing cognitive radios; the cognitive radio channel. This channel models the simplest scenario in which a cognitive radio could be used and consists of a 2 Tx, 2 Rx wireless channel in which one transmitter knows the message of the other. We obtain fundamental limits, on the communication possible over such a channel, and discuss future engineering and regulatory issues.

引用

页码：44 / 49

页数：6

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