Multiple-input multiple-output detection method and system for received data

Abstract

The invention relates to the wireless communication field and discloses a multiple-input multiple-output detection method and system for received data. According to the multiple-input multiple-output detection method and system, at least one resource element (RE) is selected from a resource block where the received data to be detected are located; detection SINRs of the selected RE are calculated through a maximal ratio combining (MRC) detection algorithm and an interference rejection combining (IRC) detection algorithm respectively; the detection SINR obtained through calculation with the MRC detection algorithm is compared with the detection SINR obtained through calculation with the IRC detection algorithm; according to a comparison result, the detection algorithm through which the higher detection SINR is obtained is selected for conducting multiple-input multiple-output detection on the received data to be detected. Since the detection performance of the MRC detection algorithm and the IRC detection algorithm is prejudged directly through calculation and comparison of the detection SINRs, selection and switch of the MRC detection algorithm and the IRC detection algorithm can be conducted accurately in real time with no need for judging an interference environment where a terminal is currently located, and therefore the overall performance of an LTE terminal in terms of MIMO detection is improved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a multiple-input multiple-output detection method and system for receiving data. Background technique [0002] The Long Term Evolution ("LTE") system adopts Multiple-Input Multiple-Out-put ("MIMO")-Orthogonal Frequency Division Multiplexing ("OFDM") ) technology as the only standard for its air interface. Due to the adoption of OFDM technology, the sub-channels in the LTE system are strictly orthogonal. Therefore, it is generally believed that the interference in the cell in the LTE system is very small, and the interference that affects system performance mainly comes from inter-cell interference (co-channel interference). [0003] Although the LTE system has adopted many methods to deal with inter-cell interference, such as inter-cell coordination, beamforming, interference randomization, and the like. However, due to technical and implementation difficulties, inter-cell...

AI Technical Summary

Problems solved by technology

However, the distribution of adjacent cell interference in LTE system is relatively random; for example, even in the same resource block (Resource Block, referred to as "RB"), adjacent cells may only send RS, but not send data; therefore, by measuring It is unreasonable to judge whether there is co-channel interference on the data resource element (Resource Element, referred to as "RE") based on the RS power strength of the neighboring cell

In addition, the estimation of the measured value is not necessarily accurate, and the accuracy of the judgment is not high, which seriously affects the practicability of the existing methods

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