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Quantization of signals and metrics in the decoding of 8-PSK TCM

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2 Author(s)
Ross, M.D. ; Manuel Lujan Jr. Center for Space Telemetering, New Mexico State Univ., Las Cruces, NM, USA ; Osborne, W.P.

The performance of rate 2/3 8-PSK Trellis Coded Modulation was investigated as a function of the numerical resolution of the metrics and signal vectors used in decoding by the Viterbi algorithm. It was found that a 16 state Ungerboeck code using 5 bit I and Q with 7 bit metrics achieved roughly the same performance as pragmatic TCM. The findings were applied to the digital logic design of a TCM decoder

Published in:

Computers and Communications, 1995., Conference Proceedings of the 1995 IEEE Fourteenth Annual International Phoenix Conference on

Date of Conference:

28-31 Mar 1995