Data transmission apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 13, 1995
Grant Date -
N/A
app pub date -
Feb 24, 1992
filing date -
Mar 7, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data transmission apparatus with an improved error-rate characteristic after soft decision decoding by improving a decoder input such that, according to an embodiment, digital data such as voice data transmitted after being applied with coding and modulation are received, and are demodulated by a demodulator as a working mode thereof. A square mean value of errors is obtained by an error calculator on a demodulator output, and (1-e.sup.-2x/.sigma..spsp.2)/(1+e.sup.-2x/.sigma..spsp.2) is computed by a likelihood calculator and adopted as a decoder input.
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