Patent ID: 7463694

Claim:
An apparatus for transmitting and receiving a plurality of data signals using an antenna array, the apparatus comprising: a transmitter configured to transmit a plurality of data signals over a shared spectrum; a receiver configured to receive a radio frequency (RF) signal, the receiver comprising: an antenna array having a plurality of antenna elements, a plurality of demodulators, a channel estimation device configured to provide channel information, a group wise successive interference cancellation joint detection device (GSJC-JD), for estimating the transmitted reference data signals as either hard or soft symbols, configured to: group the plurality of transmitted data signals into a plurality of groups, match filter the plurality of transmitted data signals of the antenna array for a first group of the plurality of groups, producing a match filtered result, jointly detect data of the first group using the match filtered result, construct an interference correction signal using the detected data for each antenna element, subtract the received signal of each antenna element the interference correction signal for that element, producing an interference cancelled result for each antenna element, successively detect data of remaining groups using the interference cancelled result for each antenna element, wherein the jointly detecting data produces soft symbols, and convert the produced soft symbols into hard symbols prior to the interference correction signal construction.