comp_exam4_1.m

the source code of Ziemer s book Digital communication. This code is related to the exercise part.

% Simulation the probability of more than N_errors in N symbol blocks in
% a digital communication system
%
N_sim = input('Enter number of repetitions or trials ');
N = input('Bit block size for simulation ');
N_errors = input('Simulate the probability of more than __ errors occurring ');
PE = input('Error probability on each bit ');
count = 0;
for n = 1:N_sim
	U = rand(1, N);
	Error = (-sign(U-PE)+1)/2;  % Error array - elements are 1 for error; 0 otherwise
	if sum(Error) > N_errors
   	count = count + 1;
   end
   if mod(n,1000) == 0
      n
   end
end
P_greater = count/N_sim