Trellis coded modulation scheme(a) Has memory(b) Is memory-less(c) Needs more bandwidth(d) None of the mentionedThis question was addressed to me at a job interview.My question is from Trellis Coded Modulation in section Modulation and Coding Trade-off of Digital Communications

Trellis coded modulation scheme(a) Has memory(b) Is memory-less(c) Nee

1.	Trellis coded modulation scheme(a) Has memory(b) Is memory-less(c) Needs more bandwidth(d) None of the mentionedThis question was addressed to me at a job interview.My question is from Trellis Coded Modulation in section Modulation and Coding Trade-off of Digital Communications
Answer» Correct answer is (a) Has memory The best explanation: TRELLIS coded modulation scheme has memory ( a FINITE STATE MACHINE) such as the convolutional CODE.

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