Which among the following options have forward error correction integrated into the demodulation process?(a) Trellis code modulation(b) Soft decoding(c) Trellis code modulation and soft decoding(d) Block codesI got this question during an interview.My question is taken from Hardware Architecture topic in chapter Software Defined Radio Architecture of Cognitive Radio

Which among the following options have forward error correction integr

1.	Which among the following options have forward error correction integrated into the demodulation process?(a) Trellis code modulation(b) Soft decoding(c) Trellis code modulation and soft decoding(d) Block codesI got this question during an interview.My question is taken from Hardware Architecture topic in chapter Software Defined Radio Architecture of Cognitive Radio
Answer» The correct answer is (a) Trellis code modulation For explanation I would say: Forward ERROR correction is carried out to reduce the number of bits RECEIVED in error. It can be integrated into demodulation process such as in Trellis code modulation. It can be closely associated with demodulation process such as in SOFT decoding of convolution CODES.

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