cp0802_rmsds.m

IEEEuwb仿真UWB信道冲击相应；rmsds仿真UWB信道的均方根时延扩展；PDP仿真UWB信道的功率延迟剖面 rakeselector仿真RAKE接收机的路径选择 PPMcorrmask_P仿真

%
% FUNCTION 8.9 : "cp0802_rmsds"
%
% Evaluates the rms delay spread 'rmsds' of a channel
% impulse response 'h' sampled at the frequency 'fc'
%
function [rmsds]=cp0802_rmsds(h,fc)
%=====================================================
% Step One - Evaluation of the rms delay spread
%=====================================================
dt=1/fc;
ns=length(h);               % number of samples representing the channel impulse response

time=(0:dt:(ns-1)*dt);
den=sum(h.^2);
num1=sum(time.*(h.^2));
num2=sum((time.^2).*(h.^2));
rmsds=sqrt((num2/den)-(num1/den)^2);