Extension of Quickest Spectrum Sensing to Multiple Antennas and Rayleigh Channels
نویسندگان
چکیده
منابع مشابه
Quickest Spectrum Sensing with Multiple Antennas: Performance Analysis in Various Fading Channels
Traditional wireless networks are regulated by a fixed spectrum assignment policy. This results in situations where most of the allocated radio spectrum is not utilized. In order to address this spectrum underutilization, cognitive radio (CR) has emerged as a promising solution. Spectrum sensing is an essential component in CR networks to discover spectrum opportunities. The most common spectru...
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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 t...
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In research area of wireless communication, cognitive radio gets more endearment in recent times. The main motive behind the use of cognitive radio is to sense the available spectrum, which is very limited, for the users who wish to use it for the transmission purpose. The users can be primary or secondary, based on, whether they are licensed or un-licensed. Spectrum sensing plays most importun...
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We investigate the potential of quickest detection based on the eigenvalues of the sample covariance matrix for spectrum sensing applications. A simple phase shift keying (PSK) model with additive white Gaussian noise (AWGN), with 1 primary user (PU) and K secondary users (SUs) is considered. Under both detection hypotheses H0 (noise only) and H1 (signal + noise) the eigenvalues of the sample c...
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ژورنال
عنوان ژورنال: IEEE Communications Letters
سال: 2013
ISSN: 1089-7798
DOI: 10.1109/lcomm.2013.021913.122441