On the Energy Detection of Unknown Signals Over Fading Channels

This letter addresses the problem of energy detection of an unknown signal over a multipath channel. It starts with the no-diversity case, and presents some alternative closed-form expressions for the probability of detection to those recently reported in the literature. Detection capability is boos...

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Bibliographic Details
Published in:IEEE transactions on communications 2007-01, Vol.55 (1), p.21-24
Main Authors: Digham, F.F., Alouini, M.-S., Simon, M.K.
Format: Article
Language:English
Subjects:
Additive white noise
Applied sciences
AWGN
Channels
Closed-form solution
Detection, estimation, filtering, equalization, prediction
Detectors
Diffraction, scattering, reflection
Diversity reception
Diversity schemes
energy detection
Exact sciences and technology
Exact solutions
Fading
fading channels
Gaussian noise
Information, signal and communications theory
low-power applications
Mathematical analysis
Radiocommunications
Radiowave propagation
Rayleigh channels
Signal and communications theory
Signal detection
Signal processing
Signal, noise
square-law detector
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
unknown signal detection
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Summary:This letter addresses the problem of energy detection of an unknown signal over a multipath channel. It starts with the no-diversity case, and presents some alternative closed-form expressions for the probability of detection to those recently reported in the literature. Detection capability is boosted by implementing both square-law combining and square-law selection diversity schemes
ISSN:0090-6778
1558-0857
DOI:10.1109/TCOMM.2006.887483