无线通信技术32QAM_32qam_matlab_无线通信_qam_warmpel_

%NOTE!!!: The code comefrom the Maltab Help qammod %Constellation for 32-QAM. The code below plots a QAM constellation having 32 points and a peak power of 1 watt. %The example also illustrates how to label the plot with the numbers that form the input to the modulator M = 32; x = [0:(M-1)]; % MODULATION y = qammod(x,M); scale = modnorm(y,'peakpow',1); y = scale*y; % Scale the constellation. scatterplot(y); % Plot the scaled constellation. % Include text annotations that number the points. hold on; % Make sure the annotations go in the same figure. for jj=1:length(y) text(real(y(jj)),imag(y(jj)),[' ' num2str(jj-1)]); end hold off; %Demodulation y = y/scale; % Unscale xdemod = qamdemod(y,M); % Demodulate. Result=isequal(x,xdemod);