Introduction:
Satellite BW is congested & expensive.
Raised cosine pulses require additional BW above Nyquist limit (roll off factor).
When deterministic amount of ISI purposely introduced signals are called partial-response (PR).
PR signals allows transmission at Nyquist symbol rate.
The research scope is PR class I (duo-binary) and PR class IV (modified duo-binary) signals.
RESEARCH QUESTIONS:
Are partial-response signals suitable for satellite communication ?
Is it possible to improve spectral efficiency