Question

In CDMA, symbol duration is ___________ than channel delay spread.

(a) Equal

(b) Greater

(c) Slightly greater

(d) Much less

This question was addressed to me during an interview for a job.

I would like to ask this question from Spread Spectrum Multiple Access topic in portion Multiple Access Techniques for Wireless Communications of Wireless/Mobile

Answer 1

Correct choice is (d) Much less

To explain: In CDMA, symbol (chip) duration is very short and usually much less than the channel delay spread. Thus, channel data rates are very high in CDMA systems.