Patent ID: 8204149

Claim:
A method of providing data for transmission in a wireless multiple-input multiple-output (MIMO) communication system, comprising: processing data to obtain at least one block of data symbols; spatially processing the at least one block of data symbols with a plurality of steering matrices to obtain a plurality of sequences of transmit symbols each corresponding to a different portion of the at least one block of data symbols; providing the plurality of sequences of transmit symbols to a plurality of transmit antennas for transmission in a frame, wherein the plurality of steering matrices randomize an effective MIMO channel observed by a receiving entity for the at least one block of data symbols; partitioning the at least one block of data symbols into a plurality of subblocks of data symbols; and selecting a steering matrix for each subblock of data symbols, and wherein the spatially processing the at least one block of data symbols comprises spatially processing each subblock of data symbols with a steering matrix of the plurality selected for that subblock.