Cellular repeater watermarking system and method

Details Cellular repeater watermarking system and method Cellular repeater watermarking system and method

2011-03-29

2011-03-29

Rego, Dominic E (Department: 2618)

Telecommunications

Carrier wave repeater or relay system

Portable or mobile repeater

C455S009000, C455S013100, C370S226000, C370S243000, C370S279000, C370S293000, C370S315000

Reexamination Certificate

active

07917084

ABSTRACT:
A method and system for providing a watermark by amplitude modulating data onto signals being repeated from and/or to a cellular telephone handset without degrading the performance of the cellular telephone system. An exemplary cellular repeater system may include a first communication device configured to receive a cellular telephone signal from a handset. The cellular telephone signal is amplified by a variable gain amplifier configured to create an adjusted signal. The amplification factor applied by the variable gain amplifier is controlled by a message encoder configured in accordance with a predetermined encoding scheme. The adjusted signal is then transmitted to a base station by a second communication device.

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