Patent ID: 8000419

Claim:
Where a first transmitter transmits desired symbols to a targeted receiver and a second transmitter transmits known interfering symbols, a method of transmit diversity based interference cancellation at the first transmitter comprising: receiving scaling information at the first transmitter relating to the targeted receiver by receiving scaling values to be used for scaling the desired and interfering symbols in the first and second transmit diversity combinations, or receiving reception condition feedback for the targeted receiver for determination of the scaling values to be used for scaling the desired and interfering symbols; where the second transmitter respectively transmits first and second interfering symbols in first and second symbol periods or first and second sub-carrier frequencies, transmitting from the first transmitter in the first symbol period or sub-carrier frequency a first transmit diversity combination of a first desired symbol and the second interfering symbol, and transmitting from the first transmitter in the second symbol period or sub-carrier frequency a second transmit diversity combination of the first desired symbol and the first interfering symbol; and at the first transmitter, forming the first transmit diversity combination as the first desired symbol and the conjugate of the second interfering symbol, both such symbols scaled according to the scaling information, and forming the second transmit diversity combination as the conjugate of the first desired symbol and the conjugate of the first interfering symbol, both such symbols are scaled according to the scaling information.