METHOD, APPARATUS AND SYSTEM FOR PROVIDING FEEDBACK TO A TRANSMIT DIVERSITY DEVICE
First Claim
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1. A method comprising:
- receiving at a second communication device a plurality of signals transmitted by a first communication device, said plurality of signals transmitted with a predetermined variation in values of a transmit diversity parameter;
determining values of said transmit diversity parameters of said received plurality of signals;
calculating a transmit diversity parameter correction value based on said values of the received signals and on the predetermined variation in values of the transmit diversity parameter of the transmitted signals; and
transmitting the transmit diversity parameter correction value to said first communication device.
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Abstract
A method and system for improving closed loop feedback in transmit diversity communication. In one embodiment of the invention, a predetermined variation of one or more transmit diversity parameters is performed at the transmit diversity transmitter. The receiver compares the transmit diversity parameter values of the received signals to the predetermined variation and transmits to the transmitter a value of a transmit diversity correction parameter. The transmitter may use this correction value to modify the transmit diversity parameter in a subsequent transmission.
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8 Claims
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1. A method comprising:
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receiving at a second communication device a plurality of signals transmitted by a first communication device, said plurality of signals transmitted with a predetermined variation in values of a transmit diversity parameter; determining values of said transmit diversity parameters of said received plurality of signals; calculating a transmit diversity parameter correction value based on said values of the received signals and on the predetermined variation in values of the transmit diversity parameter of the transmitted signals; and transmitting the transmit diversity parameter correction value to said first communication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification