A digital communication system sends two messages, M=0 and M=1. A receiver observes a voltage signal whic can be modeled as a Gaussian random variable, whose PDFS conditioned on the transmitted message are giver by XIM=0-N(0, 1) and X|M=1-N(1,1). (a) If P(M=0)=0.5, and X=0 is received, what was sent most likely, M=0 or M=1? (b) If P(M=0)=0.25, and X=0 is received, what was sent most likely, M=0 or M=1?

Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter7: Hamilton's Principle-lagrangian And Hamiltonian Dynamics
Section: Chapter Questions
Problem 7.36P
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A digital communication system sends two messages, M=0 and M=1. A receiver observes a voltage signal which
can be modeled as a Gaussian random variable, whose PDFS conditioned on the transmitted message are given
by
XỊM=0-N(0, 1) and X|M=1~N(1,1).
(a) If P(M=0)=0.5, and X=0 is received, what was sent most likely, M=0 or M=1?
(b) If P(M=0)=0.25, and X-0 is received, what was sent most likely, M=0 or M=1?
(c) Please compare and comment on the results you obtain from (a) and (b).
Transcribed Image Text:A digital communication system sends two messages, M=0 and M=1. A receiver observes a voltage signal which can be modeled as a Gaussian random variable, whose PDFS conditioned on the transmitted message are given by XỊM=0-N(0, 1) and X|M=1~N(1,1). (a) If P(M=0)=0.5, and X=0 is received, what was sent most likely, M=0 or M=1? (b) If P(M=0)=0.25, and X-0 is received, what was sent most likely, M=0 or M=1? (c) Please compare and comment on the results you obtain from (a) and (b).
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