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- W4293731198 abstract "Unmanned aerial vehicles (UAVs) have gained much popularity for a wide variety of applications that do not require human operators, but also face the spectrum scarcity problem. To address this problem, a cognitive UAV network (CUAVN) framework based on cognitive radio (CR) technology is formulated in this article. On the basis of this, the sequential probability ratio test (SPRT) is used as a fundamental cooperative spectrum sensing (CSS) scheme to significantly reduce the average number of samples, but the uncertainty of its detection delay has a negative impact on the spectrum-sensing performance and the achievable throughput of CUAVNs, especially in the multiband spectrum sensing. Considering the location flexibility and uneven distribution density of UAVs, we design an intraframe CSS structure, with aim of achieving CSS between microsensing slots. Furthermore, a sequential maximal truncation (SMT) is proposed to realize a quick multiband spectrum sensing for delay-constraint CUAVNs. Compared to uniform tail truncation (UTT), simulation results show that the proposed quick multiband spectrum sensing with the help of SMT requires fewer sensing times in support of better sensing performance and achievable throughput, especially under a strict delay constraint." @default.
- W4293731198 created "2022-08-31" @default.
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- W4293731198 date "2022-10-01" @default.
- W4293731198 modified "2023-09-23" @default.
- W4293731198 title "Quick Multiband Spectrum Sensing for Delay-Constraint Cognitive UAV Networks" @default.
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- W4293731198 doi "https://doi.org/10.1109/jsen.2022.3201006" @default.
- W4293731198 hasPublicationYear "2022" @default.
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