bit_shaping.m

802.15 dsss 物理协议层方针代码

function d=bit_shaping(data,sp)
%duration set to sample time of gaussian pulse
% sp is sample time per pulse
duration=length(data);
st=3*sp;% st is sample time per bit, 3 is 3 pulses per bit 
% d=zeros(1,length(data)*fss);
for i=1:duration
if data(i)==1
    d((i-1)*st+1:i*st)=1;
end
if data(i)==-1
    d((i-1)*st+1:i*st)=-1;
end
end