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When we divide band of Orthogonal Frequency Division Multiplexing (OFDM) into sub bands, it diminishes effects of __________

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When we divide band of Orthogonal Frequency Division Multiplexing (OFDM) into sub bands, it diminishes effects of __________

(a) noise

(b) collision

(c) interference

(d) signals absence

I got this question in an online interview.

Enquiry is from Orthogonal Frequency Division Multiple Access (OFDMA) topic in section 4G of Wireless/Mobile

1 Answer

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Best answer
Right choice is (c) interference

Explanation: OFDM uses the same bandwidth to deliver roughly the same data rate as a single carrier modulation by introducing multiple lower-bandwidth channels. Each of the lower-bandwidth channels has a lower rate, and by combining them together, the original rate is achieved.

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