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Soft versus Hard Cooperative Energy Detection under Low SNR

Junyang SHEN, Gang XIE, Siyang LIU, Lingkang ZENG, Jinchun GAO, Yuanan LIU

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Summary :

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.

Publication
IEICE TRANSACTIONS on Communications Vol.E91-B No.11 pp.3732-3735
Publication Date
2008/11/01
Publicized
Online ISSN
1745-1345
DOI
10.1093/ietcom/e91-b.11.3732
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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