05-04-2013, 04:55 PM
STTP on Digital Communication Systems
Digital Communication.ppt (Size: 786.5 KB / Downloads: 31)
Time delay estimation using correlation function
Time delay estimation is an important task in many applications like radar, satellite communications etc.
The most common method for time delay estimation is by using the correlation function.
We will consider a simple radar illustration to study the correlation function
Generation of QAM signal and constellation graph
Quadrature Amplitude Modulation (QAM) is carried out by changing the amplitude of two carrier waves which are out of phase by 90 degrees
An M-ary QAM scheme enables the transmission of M =L2 independent symbols.