8-PSK or Multilevel PSK
This page describes 8-PSK modulation basics or multilevel PSK modulation which is a type of digital modulation based on carrier phase change.
In Phase Shift keying modulation or PSK modulation phase of carrier is changed according to the digital data. It is digital modulation technique. It is used in broadcast video systems, aircraft and satellite systems.
We can achieve bandwidth efficiency when we represent each signal element to map more than one bit.In BPSK modulation digital data of 1 and 0 is represented by 180 degree phase change. In QPSK by phase shift of 90 degree, here 2 bits are mapped on each signal. In Multilevel PSK more than 2 bits are mapped using different phase angles. In 8-PSK eight different phase angles are used to represent bits, here 3 bits. Figure below shows constellation of 8-PSK signal.
Fig. 8-PSK modulation technique
What is Difference between
BPSK vs QPSK -Difference Between BPSK and QPSK modulation techniques.
QPSK vs OQPSK vs pi/4QPSK-Difference between QPSK,OQPSK and pi/4QPSK modulation techniques
MATLAB CODE
BPSK QPSK 16QAM 64QAM modulation matlab code
Useful Links
what is modulation
BPSK modulation
QPSK modulation
QAM modulation
MSK-GMSK modulation
BPSK vs QPSK -Difference Between BPSK and QPSK modulation techniques.
QPSK vs OQPSK vs pi/4QPSK-Difference between QPSK,OQPSK and pi/4QPSK modulation techniques
Differential Encoder and Decoder