Open AccessSpectrum sensing based on energy of unknown deterministic signals over fading channels
Author(s) -
Tú Thanh Nguyễn,
Khoa Dang,
Thu Thi Hong Nguyen,
Phuong H. Nguyen
Publication year - 2014
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v17i1.1239
Subject(s) - cognitive radio , fading , additive white gaussian noise , energy (signal processing) , detector , computer science , channel (broadcasting) , electronic engineering , signal to noise ratio (imaging) , spectrum (functional analysis) , reuse , signal (programming language) , algorithm , telecommunications , wireless , engineering , mathematics , physics , statistics , quantum mechanics , programming language , waste management
In cognitive radio network, how to minimize the impact of secondary user on primary user’s signal plays a very important and complex role. Therefore, spectrum sensing is one of the most essential components of cognitive radio. Therefore, the effect of spectrum sensing algorithms plays a key role to the system’s performance. In this paper, we concentrate on spectrum sensing algorithms in order to find out spectrum hole or while hole for reusing it. Specifically, we will highlight the energy detector algorithm of unknown deterministic signals over fading channels. The numerical results match well with theoretical analysis. The system’s performance of energy detection in AWGN channel is acceptable in case of relatively low signal to noise ratio (SNR). However, the performance of system will be degraded remarkable over fading environments.