Which determines the error performance in TCM?(a) Reduced distance(b) Free distance(c) Bandwidth(d) None of the mentionedThis question was addressed to me in a job interview.I need to ask this question from Trellis Coded Modulation topic in portion Modulation and Coding Trade-off of Digital Communications

Which determines the error performance in TCM?(a) Reduced distance(b)

1.	Which determines the error performance in TCM?(a) Reduced distance(b) Free distance(c) Bandwidth(d) None of the mentionedThis question was addressed to me in a job interview.I need to ask this question from Trellis Coded Modulation topic in portion Modulation and Coding Trade-off of Digital Communications
Answer» Right choice is (b) Free distance To explain I would say: Free distance which is the MINIMUM distance between members of SET of allowed code sequences DETERMINES the ERROR performance.

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