Reverse outer loop optimization for communication channels...

Details Reverse outer loop optimization for communication channels... Reverse outer loop optimization for communication channels...

2006-07-04

2006-07-04

Nguyen, Chau (Department: 2616)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C455S069000, C455S522000, C370S335000, C370S465000

Reexamination Certificate

active

07072306

ABSTRACT:
A method and device is disclosed for outer loop power control for communication over a channel employing DTX. A device having DTX detection compensates for a known non-zero probability of DTX detection given an Erasure frame, P(D|E), by determining a compensation factor and adjusting a desired or expected target FER with the compensation factor to achieve a compensated target FER. The P(D|E) may be known or estimated to be a constant value, the value of P(D|E) may also be dynamically determined based on channel conditions. The method and device may also compensate for a non-zero P(E|D), i.e. a probability of an Erasure detection given a DTX. A number of consecutive DTX indications triggers the outer loop to reduce the power control setpoint by a predetermined value or by a dynamically determined value. A dynamic value may be determined from an identified number of Erasure frame detections.

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