Method and system for optimization of channel estimation and synchronization in an OFDM-MIMO wireless communication system

An orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) transmitter, comprising:

• a training sequence generator for generating a plurality of training sequences for a plurality of transmit antennas, the training sequences being generated by cyclically shifting a basic code M0, the length of the basic code M0 and each shift W between two training sequences are chosen such that each shift W is greater than a maximum delay spread of a wireless communication channel;
• a concatenator for concatenating the training sequences and OFDM symbols;
• and
• a plurality of transmit antennas for transmitting the training sequences and the OFDM symbols, each transmit antenna transmitting a different training sequence simultaneously.

An orthogonal frequency division multiplexing (OFDM) multiple-input multiple-output (MIMO) receiver, comprising:

• a plurality of receive antennas for receiving training sequences and OFDM symbols, each of the training sequences being transmitted via a different transmit antenna, the training sequences being generated from a basic code M0 by cyclically shifting the basic code M0 , the length of the basic code M0 and each shift W between two training sequences are chosen such that each shift W is greater than a maximum delay spread of a wireless communication channel;
• a segment splitter for separating the training sequences and the OFDM symbols received by each of the receive antennas;
• a channel estimator for processing the training sequences to obtain a channel response estimate;
• and
• a processor for processing the OFDM symbols using the channel response estimate.