| 摘要 |
<p>The present invention discloses a multiple-input multiple-output (MIMO) method for a distributed transmission source, which transmits the downlink streams between M antennas at the transmitting side and the mobile terminal having P receiving antennas, M, P>1, in which exists the multi-path distribution between at least two antennas of the transmitting side and one of the receiving antennas. Said method includes transmitting the corresponding M substreams to the mobile terminal, using the same spread spectrum code, estimating the multipath channel matrix, and processing the signal to recover the downlink data stream according to the multipath channel matrix. Said estimation includes measuring the total number of the actual multipath reception components of different time delay of the transmitted signal, constructing the channel matrix with the number which used as the multipath number, so as to set the channel parameter corresponding to the transmitting side's antennas, the receiving antennas and the time delays to zero, if the signal from the transmitting side antenna to the receiving antenna have not the multipath components corresponding to the time delays. While said transmission includes adjusting the gain of M substreams in accordance with the uplink average signal quality from mobile terminal to M transmitting side, so that the average path losses corresponding to each downlink channel are equal.</p> |
