%?modified?S-V?channel?model?evaluation
%%
%?Written?by?Sun?Xu?Kim?Chee?Wee?B.?Kannan?&?Francois?Chin?on?22/02/2005
clear;
no_output_files?=?1;?%?non-zero:?avoids?writing?output?files?of?continuous-time?responses
num_channels?=?100;?%?number?of?channel?impulse?responses?to?generate
randn（‘state‘12）;?%?initialize?state?of?function?for?repeatability
rand（‘state‘12）;?%?initialize?state?of?function?for?repeatability

cm_num=5;??%?outdoor?LOS
%?cm_num?=?6;?%?outdoor?NLOS?cm_num?controls?the?channel?model:?number?from?1?to?8
%?get?channel?model?params?based?on?this?channel?model?number
[LamLmeanlambda_modelambda_1lambda_2betaGamgamma_0Kgamma?...
sigma_clusternlosgamma_risegamma_1chim0Kmsigma_m0sigma_Km?...
sfading_modem0_spstd_shdwkappafcfs]?=?uwb_sv_params_15_4a1（?cm_num?）;
fprintf（1[‘Model?Parameters\n‘?...
‘Lam?=?%.4f?Lmean?=?%.4f?lambda_mode（FLAG）?=?%d\n‘?...
‘lambda_1?=?%.4f?lambda_2?=?%.4f?beta?=?%.4f\n‘?...
‘Gam?=?%.4f?gamma0?=?%.4f?Kgamma?=?%.4f?sigma_cluster?=?%.4f\n‘?...
‘nlos（FLAG）?=?%d?gamma_rise?=?%.4f?gamma_1?=?%.4f?chi?=?%.4f\n‘?...
‘m0?=?%.4f?Km?=?%.4f?sigma_m0?=?%.4f?sigma_Km?=?%.4f\n‘?...
‘sfading_mode（FLAG）?=?%d?m0_sp?=?%.4f?std_shdw?=?%.4f\n‘?...
‘kappa?=?%.4f?fc?=?%.4fGHz?fs?=?%.4fGHz\n‘]?...
LamLmeanlambda_modelambda_1lambda_2betaGamgamma_0Kgamma?...
sigma_clusternlosgamma_risegamma_1chim0Kmsigma_m0sigma_Km...
sfading_modem0_spstd_shdwkappafcfs）;
ts?=?1/fs;?%?sampling?frequency
%?get?a?bunch?of?realizations?（impulse?responses）
[h_ctt_ctt0np]?=?uwb_sv_model_ct_15_4a1（LamLmeanlambda_modelambda_1?...
lambda_2betaGamgamma_0Kgammasigma_clusternlosgamma_risegamma_1?...
chim0Kmsigma_m0sigma_Kmsfading_modem0_spstd_shdwnum_channelsts）;
%?change?to?complex?baseband?channel
h_ct_len?=?size（h_ct?1）;
phi?=?zeros（h_ct_len?1）;
for?k?=?1:num_channels
phi?=?rand（h_ct_len?1）.*（2*pi）;
h_ct（:k）?=?h_ct（:k）?.*?exp（phi?.*?i）;
end

%?now?reduce?continuous-time?result?to?a?discrete-time?result
[hNN]?=?uwb_sv_cnvrt_ct_15_4a（?h_ct?t_ct?np?num_channels?ts?）;
if?N?>?1
h?=?resample（hN?1?N）;?%?decimate?the?columns?of?hN?by?factor?N
else
h?=?hN;
end
%?add?the?frequency?dependency
[h]=?uwb_sv_freq_depend_ct_15_4a（hfcfsnum_channelskappa）;
%********************************************************************
%?Testing?and?ploting
%********************************************************************
%?channel?energy
channel_energy?=?sum（abs（h）.^2）;
h_len?=?length（h（:1））;
t?=?[0:（h_len-1）]?*?ts;?%?for?use?in?computing?excess?&?RMS?delays
excess_delay?=?zeros（1num_channels）;
RMS_delay?=?zeros（1num_channels）;
num_sig_paths?=?zeros（1num_channels）;
num_sig_e_paths?=?zeros（1num_channels）;
for?k=1:num_channels
%?determine?excess?delay?and?RMS?delay
sq_h?=?abs（h（:k））.^2?/?channel_energy（k）;
t_norm?=?t?-?t0（k）;?%?remove?the?randomized?arrival?time?of?first?cluster
excess_delay（k）?=?t_norm?*?sq_h;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????4645684??2009-06-08?13:58??uwb4apicture\los1.fig

?????文件???????2778??2009-06-08?13:58??uwb4apicture\los2.fig

?????文件???????2765??2009-06-08?13:58??uwb4apicture\los3.fig

?????文件???????2021??2009-06-08?13:58??uwb4apicture\los4.fig

?????文件???????2011??2009-06-08?13:59??uwb4apicture\los5.fig

?????文件??????16486??2009-06-08?13:59??uwb4apicture\los6.fig

?????文件????7343729??2009-06-08?13:40??uwb4apicture\nlos1.fig

?????文件???????2765??2009-06-08?13:40??uwb4apicture\nlos3.fig

?????文件???????2026??2009-06-08?13:40??uwb4apicture\nlos4.fig

?????文件???????2028??2009-06-08?13:40??uwb4apicture\nlos5.fig

?????文件??????49991??2009-06-08?13:40??uwb4apicture\nlos6.fig

?????文件???????2774??2009-06-08?13:40??uwb4apicture\nols2.fig

?????文件???????7606??2009-06-08?13:49??uwb4apicture\uwb_4a1.m

?????文件???????3769??2009-06-08?09:56??uwb4apicture\UWB_BAN_channel_v21.m

?????文件???????1179??2009-05-31?15:20??uwb4apicture\uwb_sv_cnvrt_ct_15_4a.m

?????文件???????1156??2009-06-08?10:07??uwb4apicture\uwb_sv_cnvrt_ct_15_4a1.m

?????文件????????861??2009-05-31?15:22??uwb4apicture\uwb_sv_freq_depend_ct_15_4a.m

?????文件????????591??2009-06-08?10:50??uwb4apicture\uwb_sv_freq_depend_ct_15_4a1.m

?????文件???????5429??2009-06-08?19:19??uwb4apicture\uwb_sv_model_ct_15_4a1.m

?????文件???????8845??2009-05-31?15:23??uwb4apicture\uwb_sv_params_15_4a.m

?????文件???????7486??2009-06-08?13:56??uwb4apicture\uwb_sv_params_15_4a1.m

?????目錄??????????0??2009-10-12?14:24??uwb4apicture

-----------?---------??----------?-----??----

?????????????12111980????????????????????22