High-efficient differential interference rejection circuit and high-efficient differential interference rejection method

Abstract

The invention relates to the field of information technology of a communication system, in particular to an interference rejection circuit and an interference rejection method under an interference environment in the field of wireless communication, and relates to a high-efficient differential interference rejection circuit and a high-efficient differential interference rejection method, which are mainly applied to the signal receiving performance of a multi-antenna system under the interference environment. The differential interference rejection circuit at least comprises a channel estimation and synchronization module, an I+N estimation module, a differential interference rejection module, a maximal ratio amalgamation module, a balanced module and the like. The interference rejection method performs differential amalgamation on the different versions of the same signal from different antennae to improve the signal receiving performance of the multi-antenna system under the interference environment effectively. Related technical problems such as method for designing the differential interference rejection circuit, the differential interference rejection method and the like are mainly solved. The differential interference rejection circuit and the differential interference rejection method have the advantages of improving the anti-interference performance of the system and having the function of automatically adjusting the complexity of a scene.

Description

technical field [0001] The present invention relates to the field of information technology of a communication system, in particular to an interference elimination circuit and an interference elimination method in the interference environment in the field of wireless communication, which are mainly applied to the signal receiving performance of a multi-antenna system in an interference environment. An efficient differential interference cancellation (DIRC) circuit and interference cancellation method. Background technique [0002] Modern communication systems are generally equipped with multiple receiving antennas. After combining signals from different antennas, the system can obtain a maximum power gain of 20log(N)dB, where N is the number of receiving antennas. Currently, there are two commonly used merging algorithms, the first is the maximum ratio merging algorithm, and the second is the traditional interference elimination merging algorithm based on the minimum sequenc...

AI Technical Summary

Problems solved by technology

The maximum ratio combining algorithm can obtain the best signal-to-noise ratio in the scene of no interference and only noise, but it can’t do anything for the noise scene; the traditional interference cancellation algorithm based on the minimum sequence error (MSE) has good performance, but the complexity varies with the channel state. The number increases exponentially; there is no further development technology for how to automatically adjust according to the complexity of the scene

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