Rate 1/2 180° phase-invariant convolutional coding with differentially-encoded coherent QPSK for band-limited AWGN channels

L. H C Lee*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Rate-1/2 180° phase-invariant convolutional coding and unquantised maximum-likelihood Viterbi decoding with differentially-encoded coherent QPSK (DE-QPSK) for bandlimited additive white Gaussian noise (AWGN) channels are considered. The simulated bit error probability performance of the trellis-coded modulation is presented for four- and eight-state convolutional codes of constraint lengths three and four, respectively.

Original languageEnglish
Pages (from-to)1141-1142
Number of pages2
JournalElectronics Letters
Volume26
Issue number15
Publication statusPublished - 1 Jan 1990

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