Patent ID: 8488704

Claim:
A method for self-adaptively selecting a code modulation sub-channel mode in a MIMO communication system that comprises a base station and mobile terminals, wherein the method comprises the steps of: the mobile terminal estimating channel state information thereof, and determining a sub-channel structure most suitable for data transmission thereto, based on the channel state information; the mobile terminal feeding back information on the determined sub-channel structure most suitable for data transmission thereto to the base station; and the base station determining a sub-channel structure used for a down link, based on the information on the sub-channel structure fed back by the mobile terminal, wherein the mobile terminal determines the sub-channel structure most suitable for data transmission thereto, based on any one of the following a) to d): a) to make the fading on the determined sub-channel as flat as possible; b) to make the effective SINR in one sub-channel as high as possible; c) to make the average physical SNR on the determined sub-channel as high as possible; d) to balance among a), b) and c).