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Which uses orthogonal codes?

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Which uses orthogonal codes?

(a) Synchronous CDMA

(b) Asynchronous CDMA

(c) Synchronous & Asynchronous CDMA

(d) None of the mentioned

The question was posed to me during an internship interview.

Enquiry is from Spread Spectrum and CDMA topic in section Multiplexing and Multiple Access of Digital Communications

1 Answer

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Best answer
Correct option is (a) Synchronous CDMA

The best explanation: Synchronous CDMA uses orthogonal codes and asynchronous CDMA uses pseudorandom codes.

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