资源简介
文件包含uwb信道模型的仿真,对PPM-TH信号通过UWB信号后的信号进行接收,并重建,得到信道的 冲击响应。
代码片段和文件信息
%
% FUNCTION 2.4 : “cp0201_2PPM_TH“
%
% Introduces the TH code given by ‘THcode‘
% and implements binary PPM modulation
% ‘seq‘ is the input binary stream
% ‘fc‘ is the sampling frequency for the generated signal
% ‘Tc‘ is the chip time
% ‘Ts‘ is the average pulse repetition time
% ‘dPPM‘ is the PPM delta shift
% ‘THcode‘ is the TH code
%
% The function generates two output streams
% ‘2PPMTHseq‘ is the output with both TH and 2PPM
% ‘THseq‘ is the output with TH only
%
% Programmed by Guerino Giancola
%
function [PPMTHseqTHseq] = ...
cp0201_2PPM_TH(seqfcTcTsdPPMTHcode)
% --------------------------------------------------
% Step One - Implementation of the 2PPM-TH modulator
% --------------------------------------------------
dt = 1 ./ fc; % sampling period
framesamples = floor(Ts./dt); % no. of samples between
% pulses
chipsamples = floor (Tc./dt); % no. of samples for the
% chip duration
PPMsamples = floor (dPPM./dt); % no. of samples for the
% PPM shift
THp = length(THcode); % TH-code periodicity
totlength = framesamples*length(seq);
PPMTHseq=zeros(1totlength);
THseq=zeros(1totlength);
% ------------------------------------------------
% Step Two - Main loop for introducing TH and 2PPM
% ------------------------------------------------
for k = 1 : length(seq)
% uniform pulse position
index = 1 + (k-1)*framesamples;
% introduction of TH
kTH = THcode(1+mod(k-1THp));
index = index + kTH*chipsamples;
THseq(index) = 1;
% introduction of 2PPM
index = index + PPMsamples*seq(k);
PPMTHseq(index) = 1;
end % for k = 1 : length(seq)
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 1825 2004-07-22 12:12 UWB_system\cp0201_2PPM_TH.m
文件 410 2004-07-22 12:12 UWB_system\cp0201_bits.m
文件 643 2004-07-22 12:12 UWB_system\cp0201_repcode.m
文件 354 2004-07-22 12:12 UWB_system\cp0201_TH.m
文件 3083 2009-05-08 03:36 UWB_system\cp0201_transmitter_2PPM_TH.m
文件 1410 2004-07-22 12:12 UWB_system\cp0201_waveform.m
文件 1270 2004-07-22 12:13 UWB_system\cp0801_Gnoise2.m
文件 581 2004-07-22 12:13 UWB_system\cp0801_pathloss.m
文件 3335 2009-05-09 00:01 UWB_system\cp0801_PPMreceiver.m
文件 4517 2009-05-08 03:55 UWB_system\cp0802_IEEEuwb.m
文件 1114 2004-07-22 12:13 UWB_system\cp0803_PPMcorrmask_R.m
文件 2969 2004-07-22 12:14 UWB_system\cp0803_rakeselector.m
文件 705654 2009-05-08 23:50 UWB_system\final result.bmp
文件 1994 2009-05-08 23:47 UWB_system\final result.fig
文件 2631 2009-05-11 14:09 UWB_system\UWB_system.m
文件 705654 2009-05-08 20:33 UWB_system\信道冲激响应.bmp
文件 705654 2009-05-08 20:32 UWB_system\离散时间冲激响应.bmp
文件 56 2009-05-09 00:17 UWB_system\说明.txt
文件 2949174 2009-05-08 23:50 UWB_system\运行图.bmp
文件 61 2009-05-09 00:13 UWB_system\运行时间.txt
目录 0 2014-11-27 09:22 UWB_system
----------- --------- ---------- ----- ----
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