gusucode.com > UWB_matlab源码程序 > CP0902/cp0902_prbcoll.m
% % Function 9.5: "cp0902_prbcoll" % % Evaluates the probability of error % on the basis of the probability % of pulse collision % % 'Nu' is the number of users % 'Ns' is the number of pulses per bit % 'Tm' is the time duration of the pulse % 'Ts' is the average pulse repetition period % % 'Prb' is the estimated bit error probability % % Programmed by Guerino Giancola % function [Prb] = cp0902_prbcoll(Nu,Ns,Tm,Ts) % -------------------------------------------------- % Step One - Evaluation of the bit error probability % -------------------------------------------------- % Probability of collision pr_pulsecollision = 1 - exp((2-2*Nu)*Tm/Ts); % Probability of error for the single pulse pr_pulseerror = 0.5 * pr_pulsecollision; % Probability of error for the bit n_min = ceil(Ns/2); n_max = Ns; Prb = 0; for n = n_min : n_max tmp = nchoosek(Ns,n)*(pr_pulseerror^n)*((1-pr_pulseerror)^(n_max-n)); Prb = Prb + tmp; end % for n = n_min = n_max