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Sharing of frequency spectrum between licensed primary users and unlicensed secondary users (SUs) requires reliable detection of spectrum occupancy by the SUs. We present a a new cooperative spectrum sensing in OFDM system based on MIMO cognitive radio (CR) sensor networks. We present a new interference temperature estimation approach based on OFDM technique in MIMO system. Frequency spectrum sensing...
In this paper, we consider that cooperative frequency spectrum sensing based on the spatial spectral estimation in cognitive radio sensor networks. We propose an algorithm that estimates the interference temperature of this model using a generalization of the DOA (direction of arrival) algorithm. From this, we find the interference temperature and show that it does become smaller. We compare our method...
Technique of multiple windows frequency estimation integrating SVD offers a efficient method which estimate interference temperature in radio frequency environment. Since this paper uses a way which SVD integrate the neural network, the complexity of tradition arithmetic was predigested and improved the nicety of estimating interference temperature. At the same time, the paper provides a good method...
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