Title :
Synchronization in M-PSK modems
Author :
Osborne, W. ; Kopp, Brian
Author_Institution :
New Mexico State Univ., Las Cruces, NM, USA
Abstract :
It is economical for a single modem to receive multiple modulation formats. The use of binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 8PSK, and 16PSK modulation is considered. The authors address a technique for achieving carrier synchronization for all four of these PSK schemes in a single modem. This is accomplished by using quadrature channel carrier recovery processing and a version of the maximum a posteriori (MAP) estimation phase detector algorithm. A model for the simulation of this tracking process is derived, and results are presented to confirm its functionality
Keywords :
minimum shift keying; modems; phase shift keying; signal detection; synchronisation; 16PSK; 8PSK; BPSK; MAP estimation; MPSK modems; QPSK; binary phase shift keying; carrier synchronization; maximum a posteriori estimation; phase detector algorithm; quadrature channel carrier recovery processing; quadrature phase shift keying; simulation; tracking; Binary phase shift keying; Filters; Maximum a posteriori estimation; Military standards; Modems; NASA; Phase modulation; Quadrature phase shift keying; Signal generators; Tracking loops;
Conference_Titel :
Communications, 1992. ICC '92, Conference record, SUPERCOMM/ICC '92, Discovering a New World of Communications., IEEE International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-0599-X
DOI :
10.1109/ICC.1992.268109
