Recent content by raymond23

there are four paths with delay 3, 6, 9, 21 (in micro-seconds) for the first path require 3 first to second path require 3 second to third require 3 third to forth require 21-9=12 therefore 3+3+3+12 in total is it? maximum allowed transmission rate from the sender to the receiver is 21?

3+6=9 microseconds?? is it?

Homework Statement Consider the multi-path propagation phenomenon discussed in class. Assume the signal from a sender takes 4 paths to arrive at the receiver, and the delay along each path is 3, 6, 9, 21 (in micro-seconds), respectively. Each symbol is 1 bit long. Two symbols can be...

I try this g(t)= sin(2πfct)+ cos(2πfst+π3) sin(2πfct) g(t)= sin(2πfct)+ (cos(2πfst)+cos(π3)) sin(2πfct) g(t)= sin(2πfct)+ (cos(2πfst)sin(2πfct)+cos(π3)sin(2πfct)) but don't know how to continue

Homework Statement Let the baseband signal be s(t)=cos(2πfst+π3), where fs=5kHz. Radio carrier is c(t)=sin(2πfct), where fc=100MHz. Using the amplitude modulation of g(t)=(1+s(t))c(t), what is the frequency spectrum of the modulated signal g(t)? What are the amplitude and phase shift of...