SYSTEM FOR SELECTING TRANSMISSION MODE UNDER MULTI-INPUT MULTI-OUTPUT BASED ON SCHEDULING NUMBER AND METHOD THEREOF

摘要

A system for selecting a transmission mode under the multi-input multi-output (MIMO) architecture based on a scheduling number and a method thereof are provided. A modulation coding of the spatial diversity (SD) mode and the spatial multiplexing (SM) mode according to channel state information sent from client ends is determined, respectively. The SD mode or the SM mode is selected in accordance with a scheduling number of using the SD mode and a scheduling number of using the SM mode, respectively. The transmission mode is selected based on the spectrum utilization and the scheduling rate, which achieves improving the spectrum utilization on the premise of the scheduling rate.

主权项

1. A method for selecting a transmission mode under a multi-input multi-output (MIMO) architecture based on a scheduling number, used in a base station transmitting/receiving data with a plurality of client ends through a plurality of antennas by the MIMO architecture, comprising the steps of:
receiving a plurality of channel state information from the client ends, respectively; determining a minimum equivalent diversity signal to noise ratio (SNR) in a spatial diversity (SD) mode corresponding to the client ends, and determining a minimum equivalent multiplexing SNR in a spatial multiplexing (SM) mode corresponding to the client ends, according to the channel state information; selecting a diversity modulation coding in the SD mode according to the minimum equivalent diversity SNR, and selecting a multiplexing modulation coding in the SM mode according to the minimum equivalent multiplexing SNR; and selecting the transmission mode between the SD mode and the SM mode according to a diversity scheduling number corresponding to the diversity modulation coding and a multiplexing scheduling number corresponding to the multiplexing modulation coding to transmit data on the base station in the selected transmission mode.