作者
Srinivas Nallagonda, Sanjay Dhar Roy, Sumit Kundu, Gianluigi Ferrari, Riccardo Raheli
发表日期
2017/7/27
期刊
IEEE Transactions on Aerospace and Electronic Systems
卷号
54
期号
2
页码范围
537-553
出版商
IEEE
简介
In this paper, the performance of cooperative spectrum sensing (CSS) with threshold-based censoring is investigated in the presence of noisy and faded environments. In particular, scenarios with Rayleigh, Hoyt, and Rician fading, affecting both the sensing (S) and reporting (R) channels, are considered. Each secondary user (SU) is equipped with multiple antennas and relies on an improved energy detector (IED). More precisely, the signals from the primary user (PU), received by multiple antennas of an SU, are fed to the IED, the IED outputs are combined using a selection combiner, and the combined signal is used to make a local decision. At the fusion center (FC), censoring of SUs is done on the basis of the quality, evaluated by the FC, of the faded R-channels. The censored decisions received at the FC are fused, using majority logic or maximal ratio combining, to obtain a final decision on the status of the PU …
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S Nallagonda, SD Roy, S Kundu, G Ferrari, R Raheli - IEEE Transactions on Aerospace and Electronic …, 2017