Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-05-09
2006-05-09
Cangialosi, Salvatore (Department: 3621)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S208000, C370S310000
Reexamination Certificate
active
07042857
ABSTRACT:
Techniques to more efficiently transmit pilot and signaling on the uplink in an OFDM system. With subband multiplexing, M usable subbands in the system are partitioned into Q disjoint groups of subbands. Each subband group may be assigned to a different terminal for uplink pilot transmission. Multiple terminals may transmit simultaneously on their assigned subbands. The transmit power for the pilot may be scaled higher to attain the same total pilot energy even though S instead of M subbands are used for pilot transmission by each terminal. Pilot transmissions from the terminals are received, and a channel estimate is derived for each terminal based on the pilot received on the assigned subbands. The channel estimate comprises a response for additional subbands not included in the assigned group. Subband multiplexing may also be used for uplink signaling transmission.
REFERENCES:
patent: 5511233 (1996-04-01), Otten
patent: 6104926 (2000-08-01), Hogg et al.
patent: 6430412 (2002-08-01), Hogg et al.
patent: 6430724 (2002-08-01), Laneman et al.
patent: 6449245 (2002-09-01), Ikeda et al.
patent: 6532256 (2003-03-01), Miller
patent: 6535715 (2003-03-01), Dapper et al.
patent: 6594320 (2003-07-01), Sayeed
patent: 6643281 (2003-11-01), Ryan
patent: 6731614 (2004-05-01), Ohlson et al.
patent: 2002/0136273 (2002-09-01), Hoole
Kadous Tamer
Krishnan Ranganathan
Vijayan Rajiv
Cangialosi Salvatore
Milikovsky Dmitry R.
Minhas Sandip (Micky) S.
QUALCOM, Incorporated
Wadsworth Philip R.
LandOfFree
Uplink pilot and signaling transmission in wireless... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Uplink pilot and signaling transmission in wireless..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Uplink pilot and signaling transmission in wireless... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3577470