On the Energy Detection Performance of Arbitrarily Correlated Dual Antenna Receiver for Vehicular Communication

In this letter, we investigate the energy detection performance over arbitrarily correlated Nakagami- {m} channels under vehicle mobility. We consider that vehicle is under the protection range of the primary user. We derive the probability density function of the received signal-to-noise ratio by...

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Bibliographic Details
Published in:IEEE communications letters 2019-07, Vol.23 (7), p.1186-1189
Main Authors: Kavaiya, Sagar, Patel, Dhaval K., Guan, Yong Liang, Sun, Sumei, Chang, Yoong Choon, Lim, Joanne Mun-Yee
Format: Article
Language:English
Subjects:
Antennas
arbitrary correlation
Cognitive vehicular networks
Correlation
detection probability
Fading channels
Impact strength
inter branch correlation
Nakagami-<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">m fading
Performance degradation
Probability
Probability density functions
Receivers & amplifiers
Receiving antennas
Signal to noise ratio
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Summary:In this letter, we investigate the energy detection performance over arbitrarily correlated Nakagami- {m} channels under vehicle mobility. We consider that vehicle is under the protection range of the primary user. We derive the probability density function of the received signal-to-noise ratio by means of the ratio of two distributions. Next, closed-form expression for the average probability of detection is derived considering maximal ratio combining diversity for dual-antenna branches under vehicle mobility. The numerical results demonstrate that that the impact of the arbitrary correlation under vehicle mobility in terms of receiver operating characteristic. Detection performance may vary under various antenna correlation types, such as exponential or uniform. Based on the numerical results obtained, we posit that the joint effect of high-antenna correlation and mobility of vehicle can degrade detection performance with a single antenna; furthermore, dual-antenna branches can provide a remedy to the deterioration.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2019.2916317