A channel, M-ary input logic symbol x: s0, s1, ... sM-1 Y is a real value output Channel, the following events occur: a = f (x) to the real number one mapping, when x = si time, a = iA, A is a positive real number given to y = a+ n, n is an obedience N (0, s2) distribution of independent random variables (with x independent, and each channel realization when n independently) Write channel transition probability If the input symbols, each channel shall appear, find the channel of mutual information I (X Y) Draw mutual information changes under different SNR curve, with M as its argument, draw a cluster of curves (which add a AWGN channel capacity curve for comparison) Adjustment function a = f (x), so that when x = si time, a = iA-b, b is also a real constant, at A and s the same circumstances, mutual information with the change of b is what trend ? SNR curve with the impact of b values of mutual information?

test3.m
test1.m
test2.m

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