期刊
IEEE COMMUNICATIONS LETTERS
卷 22, 期 4, 页码 832-835出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2018.2789338
关键词
Spectrum sharing; cognitive radio
资金
- NSF [CCF-1526780]
We show that timing mismatch between the primary and the secondary users results in improving the cognitive radio networks (CRNs) performance. We perform oversampling to exploit the advantages of asynchrony in CRNs. We design detectors for asynchronous transmission to boost the signal received by the primary user in the selfless overlay CRN paradigm. Accordingly, more power is conserved for the secondary user transmission without the performance of the primary user or spectrum license holder being degraded. Simulation results present a green CRN with an almost 6-dB power gain compared with the current CRN frameworks.
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