Cognitive Radios With Multiple Antennas Exploiting Spatial Opportunities

被引：37

作者：

Bixio, Luca ^{[1
]}

Oliveri, Giacomo ^{[2
]}

Ottonello, Marina ^{[1
]}

Raffetto, Mirco ^{[1
]}

Regazzoni, Carlo S. ^{[1
]}

机构：

[1] Univ Genoa, Dept Biophys & Elect Engn, I-16145 Genoa, Italy

[2] Univ Trent, ELEDIA Res Grp, Dept Informat & Commun Technol, I-38050 Trento, Italy

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2010年 / 58卷 / 08期

关键词：

Cognitive radio (CR); MIMO interference channel (MIMO IC); multiple-input multiple-output (MIMO); spatial opportunity; MIMO INTERFERENCE CHANNEL; DYNAMIC SPECTRUM ACCESS; CAPACITY; FREEDOM; NETWORKS;

D O I：

10.1109/TSP.2010.2048322

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 correspondence, the achievable rates of the so called "multiple-input multiple-output interference channel," exploited by a couple of single antenna primary terminals and two antenna cognitive radios under specific interference constraints, are analyzed. In particular, by assuming perfect channel state information at the cognitive terminals, a closed form expression for a linear precoding and linear reception scheme, which guarantees to meet the achievable rates and no mutual interference between primary and cognitive terminals, is obtained. Numerical results regarding the effects of different fading channels and of an imperfect knowledge of the channel are provided to evaluate the performances of the proposed scheme in real environments.

引用

页码：4453 / 4459

页数：8

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