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- W2350874150 abstract "In view of the slow convergence speed and low convergence precision of the threshold vector optimization in the multi-band joint spectrum sensing of the OFDM system,the paper presents a method that can optimize threshold vector based on the differential evolution algorithm. According to the multi-carrier digital modulation theory and the excellent frequency selectivity of the OFDM system,the algorithm makes full use of the fast convergence speed and strong global optimization ability of the differential evolution algorithm and guarantees that the optimal threshold vector is obtained by considering sub-channel information when the main user is under certain limited interference. The experimental results show that the proposed algorithm greatly improves the convergence time and convergence precision; and under certain limited interference,the total throughput of the cognitive system reaches the maximum." @default.
- W2350874150 created "2016-06-24" @default.
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- W2350874150 date "2015-01-01" @default.
- W2350874150 modified "2023-09-23" @default.
- W2350874150 title "A New Algorithm for OFDM Multi-Band Joint Spectrum Sensing" @default.
- W2350874150 hasPublicationYear "2015" @default.
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