Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2002-09-12
2008-12-16
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S346000
Reexamination Certificate
active
07466743
ABSTRACT:
Information symbols are transmitted simultaneously on independent streams using the same spreading code but from different transmit antennas at the transmitter. These simultaneous data stream could be intended for the same user (and thereby the data rate for any particular user can be increased) or for different users (thereby increasing the system capacity). Each stream of data can belong to a different signal constellation and use a different channel code. At the receiver, a number of receive antennas equal to at least the number of multiple data streams is used to separate the different data streams. We consider two different cases. The first one when no transmit diversity is used (this case can also include the case when transmit diversity with simple antenna weighting is used) and the second when transmit diversity with space-time block coding is used.
REFERENCES:
patent: 6072787 (2000-06-01), Hamalainen et al.
patent: 6178196 (2001-01-01), Naguib et al.
patent: 6317411 (2001-11-01), Whinnett et al.
patent: 6594473 (2003-07-01), Dabak et al.
patent: 6879576 (2005-04-01), Agrawal et al.
patent: 6891897 (2005-05-01), Bevan et al.
patent: 7181167 (2007-02-01), Onggosanusi et al.
patent: 2002/0044591 (2002-04-01), Lee et al.
patent: 2002/0089953 (2002-07-01), Kim et al.
patent: 2002/0118727 (2002-08-01), Kim et al.
patent: 2002/0118770 (2002-08-01), Foschini et al.
patent: 2002/0172293 (2002-11-01), Kuchi et al.
patent: 2002/0196842 (2002-12-01), Onggosanusi et al.
patent: 2003/0026349 (2003-02-01), Onggosanusi et al.
patent: 2003-534705 (2003-11-01), None
patent: 2004-507928 (2004-03-01), None
patent: WO 00/14921 (2000-03-01), None
Dickstein & Shapiro LLP
Ghayour Mohammed
Infineon - Technologies AG
Panwalkar Vineeta S
LandOfFree
CDMA wireless systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with CDMA wireless systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CDMA wireless systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4035494