Apparatus, and associated method, for facilitating antenna...

Details Apparatus, and associated method, for facilitating antenna... Apparatus, and associated method, for facilitating antenna...

2005-01-11

2005-01-11

Nguyen, Lee (Department: 2682)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S067110, C455S069000

Reexamination Certificate

active

06842632

ABSTRACT:
Apparatus, and an associated method, for facilitating selection of optimal antenna weightings by which to weight signals sent in a communication system that utilizes closed-loop transmit diversity. A deterministic perturbation gradient approximation technique is utilized in which perturbation vectors are selected by a selector and applied, by an applicator, to antenna weighting elements. A selected set of perturbation vectors are applied to the antenna weighting elements in both a positive direction and a negative direction. A detector at a receiving station measures in disassociated with the signals communicated thereto, once weighted with the perturbation vectors. A single-bit feedback value is returned to the sending station, and the antenna weightings are appropriately adjusted. The technique is utilized during both non-handoff conditions and during handoff conditions.

REFERENCES:
patent: 5642353 (1997-06-01), Roy et al.
patent: 6492942 (2002-12-01), Kezys

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