资源简介
TU、RA等COST207信道建模,采用瑞利信道模型进行建模,
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代码片段和文件信息
function [h]=cost_207(Sel_TypeOfChanTfd)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%% COST207 CHANNEL MODEL %%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% h=channel handle output
% T=sample period
% fd=maximum doppler frequency
% Sel_TypeOfChan=type of channel choicethere are four different types
% specified in Cost207 Model including RA(Rural Area)(when
% Sel_TypeOfChan=1)TU(Typical Urban)(when Sel_TypeOfChan=2)
% BU(Bad Urban)(when Sel_TypeOfChan=3)HT(Hilly Terrian)(when
% Sel_TypeOfChan=4) all the types belong to multi-pathes channel
% Project Name: Echo Canceller
% Author : Chang Liu
% Index : [Keywords of the project]
% Simulator : Mathworks MATLAB 7.6(R14) SP3
% Date Created: 2008-12-19
% Last Update : 2008-12-19
% Version: :
% Description : [detailed functional description of the module/function]
% References : [The citation list.]
% Dependency : [The called functions or scripts.]
%
% Copyright 2008-2009 DSP EC R&D Group.
%
%% Revision History
% Rev. NO. :
% Version :
% Rev. Date :
% Mender :
% Description :
% References : [The citation list.]
% Dependency : [The called functions or scripts.]
%%
% Rev. NO. :
% Version :
% Rev. Date :
% Mender :
% Description :
% References : [The citation list.]
% Dependency : [The called functions or scripts.]
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%construct tow types of Bigaussian doppler model in cost207 channel model
TypeOfDop1_bigaussian = doppler.bigaussian(‘SigmaGaussian1‘ 0.05 ...
‘SigmaGaussian2‘ 0.1 ...
‘CenterFreqGaussian1‘ -0.8 ...
‘CenterFreqGaussian2‘ 0.4 ...
‘GainGaussian1‘ 1 ...
‘GainGaussian2‘ 1/10);
TypeOfDop2_bigaussian=doppler.bigaussian(‘SigmaGaussian1‘ 0.1 ...
‘SigmaGaussian2‘ 0.15 ...
‘CenterFreqGaussian1‘ 0.7 ...
‘CenterFreqGaussian2‘ -0.4 ...
‘GainGaussian1‘ 1 ...
‘GainGaussian2‘ 1/10^1.5);
switch (Sel_TypeOfChan)
case[1] %choose RA TYPE6 paths
tau=[0 0.1 0.2 0.3 0.4 0.5].*1e-6; %delay of the RA channel
pdb=[0 -4 -8 -12 -16 -20]; %power of the RA channel
%these parameters selected from the article “Performance of an echo
%canceller and channel estimater for On-channel repeaters in
%DVB_T/H networks“ IEEE Transaction on broadcasting 2007.3
k=0.91/0.41; %K factor in ricianchan of RA
h=ricianchan(Tfdktaupdb0.7*fd);
case[2] %choose TU TYPE 12 pathes
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 5455 2009-02-28 17:12 cost_207.m
----------- --------- ---------- ----- ----
5455 1
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