Open AccessPerformance of improved energy detector with cognitive radio mobility and imperfect channel state information
Author(s) -
Gahane Lokesh,
Sharma Prabhat Kumar
Publication year - 2017
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2017.0040
Subject(s) - cognitive radio , rayleigh fading , detector , computer science , false alarm , energy (signal processing) , channel (broadcasting) , channel state information , telecommunications , fading , electronic engineering , algorithm , wireless , mathematics , statistics , artificial intelligence , engineering
A cooperative cognitive radio (CR) network with multiple secondary users (or CRs) is considered. Each CR consists of an arbitrary M number of antennas. For spectrum sensing, at each CR, an improved energy detector with selection combining mechanism is assumed. Moreover, the impact of secondary user mobility on the performance of spectrum sensing is analysed. Specifically, the expression for received signal at destination is derived considering the imperfect channel state information in Rayleigh fading environment. The authors derive the expression for probability of false alarm and miss detection using arbitrary power p ‐based improved energy detector and analyse the error performance of the system. The area under receiver operating characteristics curve is also obtained. Simulation results are provided to verify the analysis presented in this study.