Dependability criterion based hybrid receiver and detecting method

Abstract

The invention provides a mixed receiver and a relative check method based on reliability rule, wherein the method comprises that 1, a simple receiver receives signal and checks the initial evaluationvalue x of an emitted signal, 2, setting a judgment threshold value Th, when the initial evaluation value meets ||y-Hx||2 / sigma2<Th, while y, H, sigma2 are respectively a receiving signal, a channel matrix and a receiver noise energy, using the initial evaluation value as the final evaluation value of the emitted signal to be output, 3, if the initial evaluation value not meets ||y-Hx||2 / sigma2<Th, inputting the received signal to a complex receiver to be checked, to obtain and output a final evaluation value. The invention can be used in MIMO system, which can use simple receiver to replace complex receiver to check part of emitted signal, without property loss or little property loss, to effectively reduce receiver complexity.

Description

technical field [0001] The invention relates to a receiver in a multi-antenna system and a detection method thereof. Background technique [0002] In wireless communication systems, it is increasingly urgent to provide high-speed data and multimedia services for more and more mobile users, and it has become a challenge to design signal processing methods that can approach channel capacity efficiently. The optimal maximum likelihood detection (ML) prevents its practical application due to its extremely high complexity. Wolniansky P W proposed a continuous interference cancellation method (OSIC) based on the minimum mean square error (MMSE) method in MIMO systems. ), according to the maximum post-detection SNR (post-detection SNR), the transmitted signal is estimated and the interference is canceled one by one. The performance of this method is better than that of the MMSE method, and the complexity does not increase much, but it is far from the optimal performance In order t...

AI Technical Summary

Problems solved by technology

However, the detection algorithm complexity of complex receivers is high

[0003] Simple receivers, such as OSIC receivers, have low detection algorithm complexity, but their performance is far behind complex receivers

[0004] The existing technology generally uses either simple receivers or complex receivers, but both have defects: the performance of simple receivers has a greater loss compared with complex receivers; the algorithm complexity of complex receivers is too high

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