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Signal processing method and equipment

A signal processing and signal technology, applied in the field of signal processing, can solve the problems that the system capacity and signal-to-interference-noise ratio cannot be improved, and the cells of the same frequency cannot be suppressed or coordinated, so as to achieve the effect of improving the signal-to-interference-noise ratio

Active Publication Date: 2015-08-12
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0010] The present invention provides a method and equipment for signal processing, which are used to solve the problem that the current interference mitigation scheme in the prior art cannot improve system capacity and signal-to-interference-noise ratio, and cannot suppress or coordinate distant co-frequency cells

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Embodiment Construction

[0043] In the embodiment of the present invention, matrix decomposition is performed on the determined matrix used to represent the statistical characteristics of the interference source to obtain the orthogonal complement space matrix of the interference source; according to the orthogonal complement space matrix of the interference source, the received signal Estimated values ​​are normalized.

[0044] Based on the subspace theory, the embodiment of the present invention constructs an orthogonal complementary space matrix of the interference source, forms a zero limit in the space of the interference source, and forms a beam in the desired signal space, thereby achieving the purpose of suppressing interference. Because there is no need; and the embodiment of the present invention is based on the signal subspace theory, the orthogonal complement space of interference and / or noise is obtained through matrix decomposition, thereby forming a zero limit in the interference directi...

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Abstract

The embodiment of the invention relates to the technical field of wireless communication, specially relates to a signal processing method and equipment, and is used to solve the problems that a current interference reduction scheme existing in the prior art cannot improve the system capacity and the signal-interference and noise ratio and cannot perform inhibition or coordination relative to a remote same-frequency cell. The method of the embodiment comprises determining a matrix for representing statistical characteristics of a reference source, performing matrix decomposition on the determined matrix for representing the statistical characteristics of the reference source to obtain an orthogonal complement space matrix, and performing normalized processing on an estimated value of a received signal according to the orthogonal complement space matrix of the reference source.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a signal processing method and equipment. Background technique [0002] In the LTE (Long Term Evolution, long-term evolution) system, users in the same cell are orthogonal, so interference mainly comes from users in other cells and co-channel interference caused by frequency reuse. In the early research of LTE, various inter-cell interference mitigation techniques that were considered were listed, mainly including: [0003] Inter-cell interference randomization (Inter-Cell Interference Randomization) and inter-cell interference coordination / avoidance (Inter-Cell Interference Coordination / avoidance). [0004] The basic idea of ​​the inter-cell interference randomization technology is to convert the interference signal into random white noise. The commonly used methods include scrambling, interleaving, frequency hopping, etc.; [0005] The basic idea of ​​i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W72/08H04W72/54
CPCH04L1/0015H04W72/541
Inventor 陆会贤
Owner DATANG MOBILE COMM EQUIP CO LTD
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