rand_sym_qam.m

来自「64QAM matlab s programs.」· M 代码 · 共 17 行

function [symb,avgpower] = rand_sym_QAM(d,N,b)
% Funtion for generating random distributed QAM points
% and calculate average power.
%
% symb: generated points, column vector
% avgpower: average power of generated points
% d: scaling factor for generated points
% N: number of generated points
% b: size of QAM matrix
%
re = (round((rand(N,1) * 2^b) - 0.5) - 2^(b-1) + 0.5)*d;
im = i * (round((rand(N,1) * 2^b) - 0.5) - 2^(b-1) + 0.5)*d;
symb = re + im;
%
avgpower = mean((abs(symb)).^2);