| 摘要 |
Provided in embodiments of the present invention are a multiple-input multiple-output orthogonal frequency-division multiplexing communication system and a signal compensation method. The method comprises: a receiver receives via an N-number of receiver antennas multiple channel estimation preambles transmitted by an M-number of transmitter antennas of a remote transmitter; the receiver determines a channel estimation parameter between the M-number of transmitter antennas and the N-number of receiver antennas on the basis of a first preamble signal of the M-number of transmitter antennas comprised in the multiple channel estimation preamble signals; the receiver receives via the N-number of receiver antennas a data signal and a second preamble signal transmitted on a first data symbol by the M-number of transmitter antennas; the receiver determines a channel phase shift parameter between the M-number of transmitter antennas and the N-number of receiver antennas on the basis of a signal of the second preamble signal transmitted on the first data symbol by the M-number of transmitter antennas that reaches where the N-number of receiver antennas are located; and, the receiver determines, on the basis of the channel estimation parameter between the M-number of transmitter antennas and the N-number of receiver antennas, and of the channel phase shift parameter between the M-number of transmitter antennas and the N-number of receiver antennas, a signal compensation for the data signal transmitted on the first data symbol by the M-number of transmitter antennas when reaching where the N-number of receiver antennas are located. In the embodiments of the present invention, the receiver determines the signal compensation for the data signal on the basis of the channel estimation parameter between the transmitter antennas of the remote transmitter and the receiver antennas of the receiver and of the channel phase shift parameter of the transmitter antennas of the remote transmitter on the first data symbol, thus allowing for an increase to a certain extent in the accuracy of demodulation of transmitted data. |
