Which among the following functions prevent collision?(a) Spectrum analysis(b) Spectrum decision(c) Spectrum mobility(d) Spectrum sharingThis question was addressed to me in quiz.My question comes from Next Generation Wireless Network topic in division Next Generation Wireless Network of Cognitive Radio

Which among the following functions prevent collision?(a) Spectrum ana

1.	Which among the following functions prevent collision?(a) Spectrum analysis(b) Spectrum decision(c) Spectrum mobility(d) Spectrum sharingThis question was addressed to me in quiz.My question comes from Next Generation Wireless Network topic in division Next Generation Wireless Network of Cognitive Radio
Answer» Correct option is (d) SPECTRUM sharing The best I can explain: In the UNLICENSED portion of the spectrum, cognitive radio users have EQUAL access to the spectrum and ATTEMPT to access the spectrum SIMULTANEOUSLY. Spectrum sharing coordinates the network access such that collision is avoided in overlapping portions of the spectrum.

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