Symbol error based power control for mobile telecommunication sy

Details Symbol error based power control for mobile telecommunication sy Symbol error based power control for mobile telecommunication sy

1994-11-30

1998-03-10

Ghebretinsae, Temesghen

Pulse or digital communications

Synchronizers

Feedback, receiver to transmitter

455 69, H04L 700

Patent

active

057270333

ABSTRACT:
A mobile telecommunication system power control loop includes a symbol error rate detector to detect a number of symbol errors induced during transmission, a summing node to subtract the output of the symbol error rate detector from a symbol error rate target, a multiplier to introduce an adjustment factor, and an integration element to sum the output of the multiplier with past outputs of the multiplier. The output of the integration element is a signal power to noise power ratio target which is used to control the transmission power of the mobile telecommunication system. In one embodiment the symbol error rate target is a constant or parameter set by the user. In another embodiment the symbol error rate target is adjusted automatically to maintain a constant frame error rate.

REFERENCES:
patent: 4309771 (1982-01-01), Wilkens
patent: 5056109 (1991-10-01), Gilhousen et al.
patent: 5257283 (1993-10-01), Gilhousen et al.
patent: 5265119 (1993-11-01), Gilhousen et al.
patent: 5267262 (1993-11-01), Wheatley, III
patent: 5299226 (1994-03-01), Schilling
patent: 5333175 (1994-07-01), Ariyavisitakul et al.
patent: 5386588 (1995-01-01), Yasuda
"Power Control in CDMA" and Power Control the CDMA Network Engineering Handbook vol. 1 Nov. 23, 1992.

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