| 主权项 |
1. A receiver constructed to receive signals from a remote unit that at time n transmits a data block bi[n,k] over two transmit antennas and transmits a data block b2[n,k] over two other transmit antennas, where k is a tone and k=0, 1, 2, . . . , comprising:
N receive antennas, each receiving a signal that includes signals related to the signals transmitted by the transmit antennas of the remote unit, where N is equal or greater than 4; N fast Fourier transform (FFT) modules, each coupled to an associated one of said receive antennas; a space-time processing (STP) unit, responsive to said FFT modules, to pre-whiten signals supplied to said STP unit and to perform maximum likelihood detection on each of the pre-whitened signals, and which, when initially detecting data pertaining to block b1[n,k] treats other received signals, including signals received from the antennas that transmit data pertaining to block b2[n,k], as interfering noise, and when initially detecting data pertaining to block b2[n,k] treats other received signals, including signals received from the antennas that transmit data pertaining to block b1[n,k], as interfering noise; a first space-time decoder responsive to output signals of said STP unit for decoding block b1[n,k] ; a second space-time decoder responsive to output signals of said STP unit for decoding block b2[n,k]; and a channel parameter estimator responsive to output signals of said FFT modules and output signals of said space-time decoders, for developing parameter estimates of channels between the remote unit and the receiver, and applying the developed parameter estimates to said space-time decoders. |
