| 摘要 |
The present invention is related to a method of transmitting data signals (200) from at least one transmitting terminal (240) with a spatial diversity means (220) to at least two receiving user terminals (330), each provided with spatial diversity receiving means (320). The method comprises the steps of : dividing (205) the data signals (200) into a plurality of streams of (sub-user) data sub-signals (210), determining (250) combined data signals (300) in the transmitting terminal, whereby those combined data signals are transformed versions of the streams of data sub-signals (210), such that at least one of the spatial diversity means (320) of the receiving user terminals only receives data sub-signals being specific for the corresponding receiving user terminal, inverse subband processing (260) the combined data signals (300), transmitting with the spatial diversity means (220) the inverse subband processed combined data signals, receiving on at least one of the spatial diversity receiving means (320) of at least one of the receiving terminals (330) received data signals, being at least function of the inverse subband processed combined data signals, determining on at least one of said receiving terminals (330) estimates of the data sub-signals from the received data signals, and collecting the estimates of the data sub-signals into estimates of the data signals. <IMAGE> |
