Modulo arithmetic overflow control for viterbi decoder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Jan 1, 2004
app pub date -
Jun 26, 2002
filing date -
Jun 26, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method and apparatus for controlling overflow in Viterbi decoder is disclosed. The present invention allows the metrics to use short words, and to grow freely, by the use of natural wrap-back when overflow occurs. The metric compare process monitors the occurrence of wrap-back and produces results accordingly. In accordance with one aspect of the invention, a 'partial subtractions' is used for the compare processes by checking the most-significant bit of each 'partial subtraction' result, instead of the carry bit, to determine the comparison result. Based on the comparison result, the metric will be selected, or updated, at the next stage.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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