www.gusucode.com > wlan 源码程序 matlab案例代码 > wlan/BuildVHTPPDUExample.m
%% Build VHT PPDU % This example shows how to build VHT PPDUs by using the waveform % generator function or by building each field individually. %% Waveform Generator % Create a VHT configuration object. vht = wlanVHTConfig; %% % Generate the VHT PPDU. The length of the input data sequence in bits must % be 8 times the length of the PSDU, which is expressed in bytes. Turn off % windowing. x = randi([0 1],vht.PSDULength*8,1); y = wlanWaveformGenerator(x,vht,'WindowTransitionTime',0); %% % Plot the magnitude of the waveform. t = ((1:length(y))'-1)/80e6; plot(t,abs(y)) xlabel('Time (s)') ylabel('Magnitude (V)') %% Individual PPDU Fields % Create L-STF, L-LTF, L-SIG, VHT-SIG-A, VHT-STF, VHT-LTF, and VHT-SIG-B % preamble fields. lstf = wlanLSTF(vht); lltf = wlanLLTF(vht); lsig = wlanLSIG(vht); vhtSigA = wlanVHTSIGA(vht); vhtstf = wlanVHTSTF(vht); vhtltf = wlanVHTLTF(vht); vhtSigB = wlanVHTSIGB(vht); %% % Generate the VHT-Data field using input data field |x|, which was % used as an input to the waveform generator. vhtData = wlanVHTData(x,vht); %% % Concatenate the individual fields to create a single PPDU. z = [lstf; lltf; lsig; vhtSigA; vhtstf; vhtltf; vhtSigB; vhtData]; %% % Verify that the PPDUs created by the two methods are identical. isequal(y,z)