zeerum
Junior Member level 3
matlab question
hi
we were given a code about simulation of bpsk. in that code signal was upsampled. and then during pulse shaping by root raised cosine filter, it was multiplied by squareroot of upsampling factor as follows
x=round(rand(1,16000)); %generating random data
xk=(-1).^x; %generating BPSK symbols
x_input=upsample(xk,100);
b=sqrt(100)*firrcos(255,0.01,1,2,'rolloff','sqrt');
i want to know what actually is the advantage of upsampling( inserting extra zeroes between samples) and why was firrcos multiplied by sqrt(100)?
please explain on basic level as i am beginner to all of this.
thx
hi
we were given a code about simulation of bpsk. in that code signal was upsampled. and then during pulse shaping by root raised cosine filter, it was multiplied by squareroot of upsampling factor as follows
x=round(rand(1,16000)); %generating random data
xk=(-1).^x; %generating BPSK symbols
x_input=upsample(xk,100);
b=sqrt(100)*firrcos(255,0.01,1,2,'rolloff','sqrt');
i want to know what actually is the advantage of upsampling( inserting extra zeroes between samples) and why was firrcos multiplied by sqrt(100)?
please explain on basic level as i am beginner to all of this.
thx
