Multiple-input multiple-output orthogonal frequency division multiplexing communication system and method for signal compensation

A receiver, comprising:

• N receiving antennas, configured to receive a plurality of channel estimation preamble signals sent by M transmitting antennas of a remote transmitter, wherein the plurality of channel estimation preamble signals contain first pilot signals of the M transmitting antennas, and M and N are integers larger than 1;
• and
• a determining unit, configured to determine channel estimation parameters from the M transmitting antennas to the N receiving antennas according to the first pilot signals of the M transmitting antennas contained in the plurality of channel estimation preamble signals;
• the N receiving antennas are further configured to receive data signals and second pilot signals sent on a first data symbol by the M transmitting antennas;
• the determining unit is further configured to determine channel phase shift parameters from the M transmitting antennas to the N receiving antennas according to signals arrived at the N receiving antennas which come from the second pilot signals sent on the first data symbol by the M transmitting antennas;
• and
• the determining unit is further configured to determine according to the channel estimation parameters from the M transmitting antennas to the N receiving antennas and the channel phase shift parameters from the M transmitting antennas to the N receiving antennas, signal compensation for the data signals arrived at the N receiving antennas that are sent on the first data symbol by the M transmitting antennas.

A transmitter, comprising a signal generating unit and M transmitting antennas, wherein

• the signal generating unit is configured to generate a plurality of channel estimation preamble signals, wherein the plurality of channel estimation preamble signals contain first pilot signals of the M transmitting antennas, M and N are integers larger than 1, the first pilot signals in the plurality of channel estimation preamble signals are used by a remote receiver for determining channel estimation parameters from the M transmitting antennas to the N receiving antennas;
• the M transmitting antennas are configured to send the plurality of channel estimation preamble signals to N receiving antennas of the remote receiver, wherein each one of the plurality of channel estimation preamble signals is separately transmitted by one transmitting antenna in the M transmitting antennas;
• the signal generating unit is further configured to generate data signals and second pilot signals;
• the M transmitting antennas are further configured to send the data signals and the second pilot signals on a data symbol, wherein the second pilot signals are used by the remote receiver for determining channel phase shift parameters from the M transmitting antennas to the N receiving antennas, and further determining signal compensation of the data signals according to the channel estimation parameters and the channel phase shift parameters.