Soft versus Hard Cooperative Energy Detection under Low SNR

被引：8

作者：

Shen, Junyang ^{[1
]}

Xie, Gang ^{[1
]}

Liu, Siyang ^{[1
]}

Zeng, Lingkang ^{[1
]}

Gao, Jinchun ^{[1
]}

Liu, Yuanan ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Sch Telecommun Engn, Beijing 100876, Peoples R China

来源：

IEICE TRANSACTIONS ON COMMUNICATIONS | 2008年 / E91B卷 / 11期

关键词：

approximation of Q function; cognitive radio; cooperative spectrum sensing; energy detection; hard decision; soft decision;

D O I：

10.1093/ietcom/e91-b.11.3732

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：

Amidst conflicting views about whether soft cooperative energy detection scheme (SCEDS) outperforms hard cooperative energy detection scheme (HCEDS) greatly in cognitive radio. we establish the bridge that mathematically connects SCEDS and HCEDS by closed approximations. Through this bridge, it is demonstrate that, if the number of detectors of HCEDS is 1.6 times as that of SCEDS, they have nearly the same performance which is confirmed by numerical simulations. enabling a quantitative evaluation of the relation between them and a resolution Of the conflicting views.

引用

页码：3732 / 3735

页数：4

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