Multi-antenna interference rejection combining method and device

Abstract

The invention discloses a multi-antenna interference rejection combining method and a multi-antenna interference rejection combining device, which aim to solve the problem of relatively lower system performance caused by relatively lower signal modulation accuracy in the prior art. The method comprises the following steps of: performing channel estimation on signals received by each of a plurality of antennae, and determining estimated channel parameter values of the signals received by each antenna, wherein each of the plurality of antennae receives the signals from a plurality of users; andperforming interference rejection combination according to the estimated channel parameter values of the signals received by each antenna, the signals received by each antenna and an interference autocorrelative matrix of the plurality of antennae, performing joint detection on the plurality of users according to interference rejection combining results and obtaining own estimated sequential values of the plurality of users. By the technical scheme of the invention, the signal modulation accuracy is improved, and the system performance is further improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for combining multi-antenna interference suppression. Background technique [0002] With the continuous growth of GSM (Global System for Mobile Communications, Global System for Mobile Communications) user data, operators are currently facing serious system expansion problems. At present, the capacity expansion of the GSM system is realized mainly through cell splitting, that is, the cell splitting method is a traditional capacity expansion technology. [0003] At present, due to the VAMOS (Voice services over Adaptive Multi-user channel on One Slot) technology formulated by 3GPP (3rd Generation Partnership Project, the third generation partnership project), the adaptive multi-user voice service on one time slot The same time slot carries two unrelated users at the same time, thereby achieving twice the capacity expansion compared with the existi...

AI Technical Summary

Problems solved by technology

However, the uplink demodulation algorithm of the existing VAMOS technology only has a single-user detection function. When it is necessary to simultaneously demodulate the information of two users that interfere with each other, it cannot be realized by using this VAMOS technology. Therefore, there is an urgent need for A joint detection uplink demodulation algorithm with interference suppression capability to solve the defects of the existing technology

[0004] At present, for the JMLSE (Joint Maximum Likelihood Sequence Estimation, maximum likelihood sequence estimation) and JD (Joint Detection, joint detection) algorithms, these two joint detection algorithms are only aimed at the sequence estimation of two users, and the interference is more serious area, using this joint detection method has no ability to suppress the third co-channel interference user other than the first user, so that the demodulation performance of the signal is poor; therefore, in the prior art, for multiple The ability to suppress the signal interference of individual users is poor, which leads to the problem of poor system performance

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