www.gusucode.com > LTE仿真Matlab源码 > LTE_common_calculate_SC_SNR.m
function [ SINR ] = LTE_common_calculate_SC_SNR( chan_type, SNR, Ntot, varargin ) % Calculates the subcarrier SNR for the Block Fading cases. % Author: Josep Colom Ikuno, jcolom@nt.tuwien.ac.at. Original code From % Dagmar Bosanska, dbosansk@nt.tuwien.ac.at % (c) 2009 by INTHFT % www.nt.tuwien.ac.at sigma_n2 = 10^(-SNR/10); switch chan_type case 'AWGN' SINR = 10*log10(1/sigma_n2) * ones(Ntot,1); % Flat, but still a per-subcarrier-SINR case 'flat Rayleigh' %%%%%%%%%%%%%%%% this is not corrected, just to assign some %%%%%%%%%%%%%%%% values in order to get the simulator to %%%%%%%%%%%%%%%% run (Dasa) SINR = 10*log10(1/sigma_n2) * ones(Ntot,1); % Flat, but still a per-subcarrier-SINR case 'frequency selective' genie.H_fft = varargin{1}; % Set to work for SISO channels (2-dimensional matrix) and the % first symbol. SINR = 10*log10(abs(genie.H_fft(:,1)).^2/sigma_n2); otherwise error('Channel type not supported'); end