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Which among the following is not a requirement for multiple spectrum band transmission by xG user?

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Which among the following is not a requirement for multiple spectrum band transmission by xG user?

(a) Spectrum holes

(b) Compatibility with internal policies

(c) Contiguous spectrum band

(d) Compatibility with quality of service

I had been asked this question in an online quiz.

The origin of the question is Next Generation Wireless Network in division Next Generation Wireless Network of Cognitive Radio

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Best answer
Correct answer is (c) Contiguous spectrum band

The best I can explain: xG users can transmit packets on multiple spectrum bands provided the available spectrum meets the quality of service requirements and the spectrum policies required for communication. However it does not require the multiple spectrum bands to be contiguous. This exhibits a vast improvement in communication quality during the spectrum handoff.

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