Binary DPSK transmission over terrestrial and satellite links (Corresp.)

It has been observed previously that downlink noise correlation has no effect on the average error probability of a differentially phase shift keyed (DPSK) satellite system when the symbols are equiprobable. We show thai this observation holds for a satellite system exhibiting amplitude-modulation-to-amplitude-modulation (AM-AM) conversion effects and amplitude-modulation-to-phase-modulation (AM-PM) conversion effects. It is also shown thai noise correlation has no effect even when a constant phase error is caused by the delay line of the DPSK receiver in terrestrial and satellite links.