In digital communication system, in order to increase noise immunity, it is necessary to increase _________(a) Signal power(b) Signal amplitude(c) Signal frequency(d) Signal magnitudeThis question was addressed to me in semester exam.My question comes from Digital Modulation in portion Modulation Techniques for Mobile Radio of Wireless/Mobile

In digital communication system, in order to increase noise immunity,

1.	In digital communication system, in order to increase noise immunity, it is necessary to increase _________(a) Signal power(b) Signal amplitude(c) Signal frequency(d) Signal magnitudeThis question was addressed to me in semester exam.My question comes from Digital Modulation in portion Modulation Techniques for Mobile Radio of Wireless/Mobile
Answer» Right option is (a) Signal power Explanation: In digital communication SYSTEM, in order to increase noise immunity, it is NECESSARY to increase signal power. However, the amount by which the signal power should be increased to OBTAIN a certain level of FIDELITY depends on the particular type of modulation employed.

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