I’ve been asked to share my thesis and instead of emailing it to one person I thought I would post it for others as well. This is from my very early work on a P25 receiver. Since that time I’ve learned much and have done a few LMR receivers e.g. P25 phase II receivers for both the inbound (HCPM) and output (H-DQPSK) channel, MultiNet, SmartNet, and SecureNet. I can say today I’m not as impressed with my M.S. thesis as I was in 2003….anyway, enjoy…
The Effect of FM Discrimination Induced Phase Wraps on Pi/4 DQPSK Signal Detection – Thesis