How Much Time is Needed for Wideband Spectrum Sensing?

• Published in: IEEE transactions on wireless communications Vol. 8; no. 11; pp. 5466 - 5471
• Main Authors: YIYANG PEI, LIANG, Ying-Chang, KAH CHAN TEH, KWOK HUNG LI
• Format: Journal Article
• Language: English
• Published: New York, NY Institute of Electrical and Electronics Engineers 01.11.2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Allocations; Applied sciences; Channels; Chromium nitride; Detection; Detection, estimation, filtering, equalization, prediction; Exact sciences and technology; Information, signal and communications theory; Narrowband; Noise levels; Optimization; Radiocommunication specific techniques; Radiocommunications; Signal and communications theory; Signal, noise; Studies; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Wideband; Worst case method; Transmission channel; Information rate; Cognitive radio; Power allocation; Narrow band; Information transmission; Optimization; Wide band; spectrum sensing optimization; Numerical simulation; Multiple channel; Target detection; Radio communication; Software radio; Signal to noise ratio
• ISSN: 1536-1276; 1558-2248
• DOI: 10.1109/TWC.2009.090350

[...] numerical results show that, under both cases, for a CRN with three 6 MHz channels, if the frame duration is 100 ms and the target probability of detection is 90% for the worst case signal-to-noise ratio of primary users being -12 dB, -15 dB and -20 dB, respectively, the optimal sensing time is around 6 ms and it is almost insensitive to the total transmit power.