Spectrum sensing combining time and frequency domain in multipath fading channels

2008 ◽  
Author(s):  
Yuan Qi ◽  
Wenbo Wang ◽  
Tao Peng ◽  
Rongrong Qian
Keyword(s):  
Frequency Domain ◽  
Fading Channels ◽  
Spectrum Sensing ◽  
Multipath Fading ◽  
Multipath Fading Channels

scholarly journals Cognitive Spectrum Sensing with Multiple Primary Users in Rayleigh Fading Channels

2021 ◽  
Author(s):  
Salam Al-Juboori ◽  
Sattar J. Hussain ◽  
Xavier N. Fernando
Keyword(s):  
Fading Channels ◽  
Spectrum Sensing ◽  
Multipath Fading ◽  
Primary User ◽  
Multipath Fading Channels ◽  
Primary Users ◽  
Accurate Detection ◽  
Multiple Primary ◽  
Spherical Detector ◽  
Multiple Primary Users

Accurate detection of white spaces is crucial in cognitive radio networks. Initial investigations show that the accurate detection in a multiple primary users environment is challenging, especially under severe multipath conditions. Among many techniques, recently proposed eigenvalue-based detectors that use random matrix theories to eliminate the need of prior knowledge of the signals proved to be a solid approach. In this work, we study the effect of Rayleigh multipath fading channels on spectrum sensing in a multiple primary user environment for a pre-proposed detector called the spherical detector using the eigenvalue approach. Simulation results show interesting outcomes.

scholarly journals Energy detection based spectrum sensing over enriched multipath fading channels

2016 ◽  
Author(s):  
Alireza Bagheri ◽  
Paschalis C. Sofotasios ◽  
Theodoros A. Tsiftsis ◽  
Khuong Ho-Van ◽  
Michael I. Loupis ◽  
...  
Keyword(s):  
Fading Channels ◽  
Spectrum Sensing ◽  
Multipath Fading ◽  
Energy Detection ◽  
Multipath Fading Channels
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