function?PDP=exp_PDP（tau_dTsA_dBnorm_flag）
%?Exponential?PDP?generator?指數(shù)PDP生成器??PDP功率時(shí)延分布
%???Input:
%???????tau_d?????:?rms?delay?spread?in?second??RMS時(shí)延擴(kuò)展
%???????Ts????????:?Sampling?time?in?second?????采樣時(shí)間
%???????A_dB??????:?the?smallest?noticeable?power?in?dB??最小的不可忽略的功率
%???????norm_flag?:?normalizes?total?power?to?unit??歸一化總功率為1
%???Output:
%???????PDP???????:?PDP?vector?PDP向量

if?nargin<4?norm_flag=1;?end?????%?normalizes?歸一化???若變量小于4，則歸一化
if?nargin<3?A_dB=-20;?end????????%?20dB?below?20dB以下
sigma_tau?=?tau_d;??A?=?10^（A_dB/10）;???%?sigma=σ?tao=τ??tao_d=τd
lmax=ceil（-tau_d*log（A）/Ts）;?%?ceil朝正無(wú)窮方向取整??式2.2
%?Computes?normalization?factor?for?power?normalization???計(jì)算功率歸一化的歸一化因子
if?norm_flag
??p0=（1-exp（-Ts/sigma_tau））/（1-exp（-（lmax+1）*Ts/sigma_tau））;?%?（2.4）
else???
?????p0=1/sigma_tau;?
end
%?Exponential?PDP??指數(shù)PDP
l=0:lmax;?
PDP?=?p0*exp（-l*Ts/sigma_tau）;?%?（2.5）

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-03-01?16:14??2ray\
?????文件?????????964??2018-01-24?09:35??2ray\exp_pdp.asv
?????文件?????????992??2018-01-24?09:40??2ray\exp_pdp.m
?????文件????????1239??2018-01-24?09:20??2ray\plot_2ray_exp_model.asv
?????文件????????1322??2018-01-24?09:25??2ray\plot_2ray_exp_model.m
?????文件?????????226??2018-01-23?20:27??2ray\Ray_model.m