gusucode.com > UWB_matlab源码程序 > CP0901/cp0901_MUIBER_2PAM.m
% % Function 9.4 : "cp0901_MUIBER_2PAM" % % Evaluates the theoretical probability of error % for a 2PAM system in AWGN channels under the % Standard Gaussian Approximation % % 'ebn0' is a vector containing the values in dB of the % ratio Eb/No % 'erx0' is the energy of the useful signal % 'erxMUI' is a vector containing the received energies % of the % interfering users. % 'pulse' is the waveform of the basic pulse % 'Rb' is the user bit rate [b/s] % 'fc' is the sampling time [Hz] % 'gamma_r' represents the ratio (Ts/(Tb/Ns)) % function [BER] = ... cp0901_MUIBER_2PAM(ebno,erx0,erxMUI,pulse,Rb,fc,gamma_r) % ---------------------------------------------------- % Step One - Evaluation of the required constant terms % ---------------------------------------------------- % (Sigma_m)^2 [sm2] sm2 = cp0901_sm2_PAM(pulse,fc); % MUI energy summation [EMUI] EMUI = sum(erxMUI./erx0); % ------------------------------------- % Step Two - Evaluation of SIR and SNRn % ------------------------------------- SIR = (gamma_r)/(sm2*Rb*EMUI); EBN0 = 10.^(ebno/10); SNRn = EBN0.*2; % ----------------------------------- % Step Three - Performance evaluation % ----------------------------------- SNRref = 1./((1./SNRn)+(1/SIR)); BER = 0.5.*erfc(sqrt(SNRref./2));