The advantage of a binary phase-shift keying is that within a given bandwidth, modulation of higher orders allow to carry higher rates.

The advantage of a binary phase-shift keying is that within a given bandwidth, modulation of higher orders allow to carry higher rates.

8 phase shift keying is a complex form of digital modulation by altering a sine wave and a cosine wave: shifting their phase.

The best explanations I have found so far can be found at

http://en.wikipedia.org/wiki/Phase-shift_keying

and

http://www.sss-mag.com/pdf/1modulation.pdf

But they all explain the more simpler forms of phase shift keying:

Binary Phase Shift Keying (BPSK) and

Quadrature Phase Shift Keying (QPSK)

and they don't say much about 8PSK unfortunately.

However this might still give you an idea.

Good luck, I will keep searching myself.

Karen von Hünerbein

The acronym "BPSK" stands for burst pulse shift keying. Burst pulse shift keying is the simplest form of phase shift keying or PSK known currently to exist.