Method and apparatus for 45.degree. phase ambiguity resolution for one coded bit per symbol 8PSK modulation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 9, 2000
Grant Date -
N/A
app pub date -
Apr 16, 1999
filing date -
Apr 16, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for 45.degree. phase ambiguity resolution for one coded bit per symbol 8PSK modulation resolves phase ambiguity by selection of pre-differential encoders. A trellis encoder for 8PSK modulation of the type in which input data bits are encoded to a three-bit symbols includes a differential encoder, a convolutional encoder and first and second encoding assemblies. A decoder for decoding trellis coded data of 8PSK modulation includes a Viterbi decoder, a differential decoder, a convolutional decoder and first and second decoder assemblies. Each of the encoding and decoding assemblies includes multiplexing logic for selecting from among possible data paths according to a phase invariant scheme.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully