Method for power reduction in inter-symbol interference...

Details Method for power reduction in inter-symbol interference... Method for power reduction in inter-symbol interference...

2006-05-23

2006-05-23

Anderson, Matthew (Department: 2684)

Telecommunications

Transmitter and receiver at separate stations

Plural transmitters or receivers

C455S127200, C455S115100, C375S219000, C370S252000, C370S222000

Reexamination Certificate

active

07050825

ABSTRACT:
Method of reducing transmission power across a loop in a discrete multitone communication system. A first signal to noise ratio (SNR) is estimated for a signal transmitted across the loop. A second SNR is estimated for a signal across the loop, the second SNR signal being estimated exclusive of a predetermined portion of the first SNR. A power cutback scaling factor is determined in accordance with the first SNR, the second SNR, and a predefined maximum SNR degradation amount. The transmission power is scaled in accordance with said scaling factor for reducing said transmission power. In such a manner, fine gains are computed such that the transmit power is reduced without significantly affecting the achieved data rate.

REFERENCES:
patent: 5265151 (1993-11-01), Goldstein
patent: 5903608 (1999-05-01), Chun
patent: 6205410 (2001-03-01), Cai
patent: 6226356 (2001-05-01), Brown
patent: 6628704 (2003-09-01), Long et al.
patent: 6628754 (2003-09-01), Murphy et al.

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