Title :
Detector characteristic for decision-directed carrier phase recovery of 16/32-APSK signals
Author :
Gappmair, W. ; Holzleitner, J.
Author_Institution :
Inst. of Commun. Networks & Satellite Commun., Graz Univ. of Technol.
Abstract :
Usually implemented as second-order loops, decision-directed (DD) feedback devices are frequently applied for carrier phase control. Using 16-ary and 32-ary amplitude phase-shift keying (APSK), recommended as modulation schemes in the new digital video broadcasting standard for satellite communications (DVB-S2), it is shown that the DD detector characteristic (S-curve) can be derived in closed form. In the sequel, the slope of the S-curve at the stable equilibrium point, as it would be required to design the linearised recovery loop, is computed
Keywords :
amplitude shift keying; digital video broadcasting; direct broadcasting by satellite; phase shift keying; 16/32-APSK signals; DVB-S2; S-curve; amplitude phase-shift keying; carrier phase control; decision-directed carrier phase recovery; decision-directed feedback devices; detector characteristic; digital video broadcasting standard; linearised recovery loop; modulation schemes; satellite communications; second-order loops;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20062489
