Astro Question

[mr uhf]

I know Astro uses digital modulation. What are selp and cay? Any information would be appreciated.

[Nick]

I think the terms your referring to are actually VSELP (Vector Sum Excited by Linear Prediction) and CAI (Common Air Interface).

Link to Motorola for exp on CAI: http://www.mot.com/LMPS/RNSG/networks/apco/cai.htm

Link to DVSI (MBE,IMBE, AMBE and comparison info against VSELP coding)
http://www.dvsinc.com/papers/app_voco.htm