METHOD, SYSTEM AND APPARATUS FOR UPLINK SPACE TRANSMISSION OF TDD SYSTEM

摘要

A method for uplink space transmission based on a time division duplex (TDD) system is provided. In the method, a terminal measures the status information of the downlink space channel, estimates the status information of the uplink space channel using the channel symmetry of the TDD system, and selects an uplink space pre-coding matrix using the status information of the uplink space channel according to a certain criterion, the terminal executes space pre-coding using the selected space pre-coding matrix, and sends the data stream to the base station via an antenna. A terminal, a base station and a system, which are based on the method arealso provided. The solutions above use the symmetry of the TDD system channel fully, and make the uplink achieve the maximal channel capacity by selecting the uplink space pre-coding matrix, thereby optimize the uplink space transmission.