Method of transmitting binary data sequences and arrangement for enabling the rapid determination of the end of a transmitted binary data sequence
Maximum likelihood error correcting technique
Path trace viterbi decoder
Time-varying trellis-coded modulation formats which are robust in channels with phase variations
Method and apparatus for combining encoding and modulation
Error detection system
Method and apparatus for resolving phase ambiguities in trellis coded modulated data Patent #: 5233630
AbstractA decoder for decoding trellis coded data in which the received signal is assigned a sector value corresponding to the phase of the signal in accordance with a predetermined signal space sectorization format. A Viterbi decoder is used to reconstruct from the received signal an estimate of a data bit that was coded for transmission. This estimate is re-encoded and provided to a trellis output mapper along with the sector value. The trellis mapper in response to the input re-encoded estimate and sector value provides an estimate of an an uncoded data bit transmitted with the coded data bit.