Title :
A phase ambiguity resolution technique for TCM
Author :
Osborne, William P. ; Whittington, Joel L.
Author_Institution :
New Mexico State Univ., Las Cruces, NM, USA
Abstract :
The authors present the simulation model, performance evaluation, and hardware implementation of a technique to resolve phase ambiguity in trellis-coded modulation (TCM) where the popular Viterbi algorithm is utilized. While this approach has been used with BPSK (binary phase shift keying) and QPSK (quadrature phase shift keying), its application to multilevel modulation schemes (M>4) is novel and of interest because it provides a viable alternative to rotationally invariant codes. This approach does not require any arithmetic computations and can be accomplished with minimal hardware. The results presented here are being used to implement a 32-sector phase-quantized TCM system utilizing 8 PSK modulation
Keywords :
demodulators; phase shift keying; radio receivers; trellis codes; 32-sector phase-quantized TCM system; 8 PSK modulation; TCM receivers; Viterbi algorithm; hardware implementation; multilevel modulation schemes; performance evaluation; phase ambiguity resolution technique; phase detector circuits; simulation model; trellis-coded modulation; Binary phase shift keying; Decoding; Hardware; Modulation coding; Phase detection; Phase modulation; Phase shift keying; Quadrature phase shift keying; Space exploration; Viterbi algorithm;
Conference_Titel :
Military Communications Conference, 1992. MILCOM '92, Conference Record. Communications - Fusing Command, Control and Intelligence., IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0585-X
DOI :
10.1109/MILCOM.1992.244047