Method and apparatus for using synchronous CDMA in a mobile...

Details Method and apparatus for using synchronous CDMA in a mobile... Method and apparatus for using synchronous CDMA in a mobile...

2006-12-19

2006-12-19

Ramakrishnaiah, Melur (Department: 2614)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S422100, C455S065000

Reexamination Certificate

active

07151944

ABSTRACT:
The present invention relates to a method and apparatus for reducing interference arising from signal propagation delay in multipath signal environments in wireless communication systems. The present invention provides a method of operating a mobile communications base station which receives multipath components of signals from a number of high mobility subscriber terminals, the method comprising: for each subscriber terminal signal received, determining a best signal component; determining the difference in time between reception of said best signal component and a reference time; transmitting to said terminal a transmission timing offset in order to receive said best component at substantially said reference time.

REFERENCES:
patent: 5649303 (1997-07-01), Hess et al.
patent: 6002919 (1999-12-01), Posti
patent: 6421334 (2002-07-01), Baines
patent: 6529494 (2003-03-01), Ostman et al.
patent: 6600933 (2003-07-01), Hiramatsu et al.
patent: 2002/0093940 (2002-07-01), Toskala et al.

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