Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2011-06-07
2011-06-07
Gesesse, Tilahun (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S069000, C455S127100
Reexamination Certificate
active
07957760
ABSTRACT:
The distance between a first Multi Band Orthogonal Frequency Division Multiplex (MB-OFDM) data transceiver and a second or more such transceiver is determined using known techniques. The radio frequency path loss between transceivers is estimated given said distance, using a known relationship between distance and path loss, and further accounting for line-of-sight or non-line-of-sight conditions if desired. This path loss value is added to the typically minimum transmit power level, absent path loss, needed for reliable data communication. This modified initial transmit power level is then used by the first transceiver to begin the known iterative feedback process of transmit power control (TPC). Because this modified initial transmit power level, based on distance, is closer to the final optimum level, convergence in the TPC process occurs in fewer steps and less time than had the initial transmit power been maximum power as is typical in known TPC systems.
REFERENCES:
patent: 6490460 (2002-12-01), Soliman
patent: 6741862 (2004-05-01), Chung et al.
patent: 6845246 (2005-01-01), Steer
patent: 6879840 (2005-04-01), Razavilar et al.
patent: 6940827 (2005-09-01), Li et al.
patent: 2003/0104831 (2003-06-01), Razavilar et al.
Batra Anuj
Lingam Srinivas
Brady W. James
Gesesse Tilahun
Shaw Steven A.
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
LandOfFree
Method and apparatus for transmit power control 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 Method and apparatus for transmit power control in wireless..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for transmit power control in wireless... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2718518