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Average power for a CW signal is _______ to average received power for a wideband signal in small scale region.

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Average power for a CW signal is _______ to average received power for a wideband signal in small scale region.

(a) Equivalent

(b) Two times

(c) Four times

(d) Ten times

I got this question during an online interview.

Asked question is from Impulse Response Model of a Multipath Channel in division Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

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Right option is (a) Equivalent

The explanation: Average power for a CW signal is equivalent to average received power for a wideband signal in small scale region. This can occur when either the multipath phases are identically and independently distributed or when path amplitudes are uncorrelated.

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