Multi-carrier PC-CDMA system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 5, 2001
Grant Date -
N/A
app pub date -
Apr 9, 1998
filing date -
Apr 9, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a parallel combinatory CDMA (PC-CDMA) system that transmits and receives data by applying a predetermined pseudo number (PN) code corresponding to a plurality of bits, and more particularly relates to a multi-carrier PC-CDMA system, enhancing its efficiency by mixing the PN codes corresponding to the plurality of bits with respective orthogonal frequencies. The transmitting part includes a plurality of mixers 33.sub.1 to 33.sub.n for mixing respective PN codes outputted from a plurality of mappers 32.sub.1 to 32.sub.n with frequency signals having an orthogonal feature and a receiving part including a plurality of mixers 41.sub.1 to 41.sub.n for mixing received signals with the same frequency signals mixed at the transmitting part. Accordingly, it is possible to decrease the number of PN codes needed in a PC-CDMA system by correlating the mappers 32.sub.1 to 32.sub.n of the transmitting part and correlator 42.sub.1 to 42.sub.n and data detectors 43.sub.1 to 43.sub.n of the receiving part through the mixers 33 and 41 independently.
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