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Which of the following is false with respect to PCM?(a) Reliable(b) Inexpensive(c) Resistant to noise(d) Not easily recoverableThe question was asked in final exam.Enquiry is from Pulse Code Modulation in chapter Radio Transmitters, Communication Receivers, Multiplexing and Demultiplexing of Avionics

Answer»

Correct answer is (d) Not EASILY recoverable

To ELABORATE: When signals have been degraded because of noise, attenuation, or distortion, all the receiver has to do is to determine whether a PULSE was transmitted. Amplitude, width, frequency, phase shape, and so on do not affect reception. THUS PCM signals are easily RECOVERED and rejuvenated, no matter what the circumstances.



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