Optimization of spectrum sensing for opportunistic spectrum access in cognitive radio networks

被引：130

作者：

Ghasemi, Amir ^{[1
]}

Sousa, Elv'no S. ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

来源：

2007 4TH IEEE CONSUMER COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-3 | 2007年

关键词：

D O I：

10.1109/CCNC.2007.206

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Motivated by the low utilization of the licensed spectrum across many frequency bands, sensing-based opportunistic spectrum access has recently emerged as an alternative to the outdated exclusive spectrum access policy. Under this new paradigm, a secondary (unlicensed) user monitors a primary (licensed) frequency band for a given time and opportunistically transmits if it does not detect any ongoing licensed operations. Evidently, selection of the sensing parameters involves balancing a tradeoff between the speed and the quality with which the secondary user senses the licensed band. With the average throughput as the performance criterion, we obtain the sensing parameters so as to optimize the performance of the secondary user while providing the primary user with its desired level of interference protection.

引用

页码：1022 / 1026

页数：5

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