Method, system and device for enhancing throughput performance of SDMA access system

Abstract

The invention discloses a method for improving the throughput performance of a spatial division multiple access SDMA system, a system and a device thereof, wherein the method comprises: receiving feedback information which is sent by user terminals by a base station, wherein the information comprises: receiving first choice beam number of the user terminals in a precoding codebook, channel vector module value relevant information and phase difference information corresponding to first choice beams, adopting a set estimation algorithm by the base station according to received feedback information and space relevant information between base station multi-antennae, estimating the sum throughput which is supported by a current SDMA system under each sending mode, selecting a sending mode of the sum throughput corresponding to the maximum value, and adopting the sending mode to send data. Thereby, the method, the system and the device which are provided by the embodiment of the invention can improve the sending performance of an SDMA access system.

Description

technical field [0001] The invention relates to the field of space division multiple access (SDMA) access technology, in particular to a method, system and device for improving throughput performance in an SDMA access system. Background technique [0002] In a multi-antenna broadcast channel, space resources can be used to send data to multiple user terminals at the same time. This technology is called SDMA. Compared with traditional time division multiple access (TDMA) access, it can double the system throughput. Studies have shown that when sending data to multiple user terminals, space resources can be allocated through Dirty Paper Coding (DPC), which can make SDMA achieve optimal performance, but this scheme is not feasible due to its high complexity and non-causality. practical. At present, in SDMA, the commonly used method of allocating space resources is to adopt low-complexity multi-user precoding technology, such as zero-breaking (ZF) multi-user precoding technolog...

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