Choosing a closely packed signal subset from any regular lattice or array of candidate points is called as(a) Optimum signal constellation boundaries(b) Higher density lattice structures(c) Trellis coded modulation(d) None of the mentionedI got this question in an interview for job.Question is from Trellis Coded Modulation topic in portion Modulation and Coding Trade-off of Digital Communications

Choosing a closely packed signal subset from any regular lattice or ar

1.	Choosing a closely packed signal subset from any regular lattice or array of candidate points is called as(a) Optimum signal constellation boundaries(b) Higher density lattice structures(c) Trellis coded modulation(d) None of the mentionedI got this question in an interview for job.Question is from Trellis Coded Modulation topic in portion Modulation and Coding Trade-off of Digital Communications
Answer» CORRECT answer is (a) OPTIMUM SIGNAL constellation BOUNDARIES Easy explanation: Optimum signal constellation boundaries are obtained by choosing closely packed signal subset from any regular LATTICE or array of candidate points.

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