DATA TRANSMISSION WITH SPATIAL SPREADING IN A MIMO COMMUNICATION SYSTEM

摘要

For data transmission with spatial spreading, a transmitting entity (1) encodes and modulates each data packet to obtain a corresponding data symbol block, (2) multiplexes data symbol blocks onto N_S data symbol streams for transmission on N_S transmission channels of a MIMO channel, (3) spatially spreads the N_S data symbol streams with steering matrices, and (4) spatially processes N_S spread symbol streams for full-CSI transmission on N_S eigenmodes or partial-CSI transmission on N_S spatial channels of the MIMO channel. A receiving entity (1) obtains N_R received symbol streams via N_R receive antennas, (2) performs receiver spatial processing for full-CSI or partial-CSI transmission to obtain N_S detected symbol streams, (3) spatially despreads the N_S detected symbol streams with the same steering matrices used by the transmitting entity to obtain N_S recovered symbol streams, and (4) demodulates and decodes each recovered symbol block to obtain a corresponding decoded data packet.