QAM system in which the constellation is modified in accordance with channel quality
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 27, 1998
Grant Date -
N/A
app pub date -
Feb 18, 1994
filing date -
Jun 3, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A radio system is so designed as to allow each of a pair of transceivers to assess the quality of the link, and to modify the signal constellation accordingly. Each transceiver monitors the quality of the channel by assessing the strength of the received signal, or the bit error rate, or both. The system is specifically adapted to time division duplex (TDD) transmission over fast fading channel. In each block of data, the first bit is a QPSK (4QAM) signal, which indicates which constellation is to be used.
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