Title :
Rate 1/2 180 degrees phase-invariant convolutional coding with differentially-encoded coherent QPSK for band-limited AWGN channels
Author_Institution :
Electr. Eng. Labs., Manchester Univ., UK
fDate :
7/19/1990 12:00:00 AM
Abstract :
Rate 1/2 180 degrees phase-invariant convolutional coding and unquantised maximum-likelihood Viterbi decoding with differentially-encoded coherent QPSK (DE-QPSK) for band-limited 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.
Keywords :
encoding; phase shift keying; additive white Gaussian noise; band-limited AWGN channels; bit error probability performance; constraint lengths; differentially-encoded coherent QPSK; eight-state convolutional codes; phase-invariant convolutional coding; rate 1/2 180 degrees phase coding; trellis-coded modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900738
