A downlink multi-stream modulation coding mode selection and power load method

This invention relates to a method for selecting down multi-flow modulation coding mode and loading power including the following steps: under the mode of single-user MIMO, the maximum data-flow of channel quality identification selects a modulation code mode of the flow according to its channel quality identification value and the rest MIMO data flow selects a lower stage modulation coding mode so as to reduce feedback of channel quality and keep better performance of throughput, in which, when the SINR of a best flow is greater than the maximum SINR in the modulation code mode, a base station applies a method of loading to power and redundant power will be transferred to the rest to increase the throughput.