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Signal interference filtering method and related device

A technology of a signal interference and filtering device, applied in the field of communication, can solve the problems of inaccurate interference whitening matrix, errors, and inability to match the actual characteristics of interference well, such as interference elimination.

Active Publication Date: 2014-08-20
HONOR DEVICE CO LTD
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Problems solved by technology

However, the implementation of IRC requires the use of channel estimation information. At present, the estimation of the interference correlation matrix used to obtain the whitening matrix depends on the channel information of the pilot points. It is usually assumed that the ideal channel information is known at the receiving end, and the relationship between the real channel information and the inevitable error
When the channel estimation error is not considered, the resulting interference whitening matrix is ​​not accurate enough to match the actual characteristics of the interference well for interference cancellation

Method used

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  • Signal interference filtering method and related device
  • Signal interference filtering method and related device
  • Signal interference filtering method and related device

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Embodiment Construction

[0075] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0076] See figure 1 , is a schematic structural diagram of an apparatus for filtering signal interference provided in an embodiment of the present invention, and the apparatus may be specifically configured in a UE (User Equipment, user equipment). Specifically, the device in the embodiment of the present invention includes a search module 11 , a correction module 12 and a filter module 13 . in,

[0077] The search module 11 is configured to perform parameter est...

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Abstract

The embodiment of the invention discloses a signal interference filtering method and a related device. The device comprises a searching module, a correcting module and a filtering module. The searching module is used for carrying out parameter estimation in a selected area in the time-frequency domain to obtain estimation parameters, and the estimation parameter serve as an index for searching for compensation factors from a preset compensation factor lookup table, wherein the compensation factor lookup table comprises the various preset estimation parameters and the corresponding compensation factors. The correcting module is used for calculating an autocorrelation matrix corresponding to interference data in the selected area, and correcting the diagonal element of the autocorrelation matrix on the basis of the compensation factors. The filtering module is used for carrying out Cholesky decomposition on the corrected autocorrelation matrix to obtain a whitening matrix, and carrying out interference filtering on received signals in the selected area through the whitening matrix. By adopting the signal interference filtering method and the related device, interference on the signals in the selected area is effectively eliminated, the signal detection performance is improved, and operation is simple.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a signal interference filtering method and a related device. Background technique [0002] With the development of wireless broadband communication technology, users put forward higher requirements on the performance of the communication system. At the end of 2004, 3GPP (3rd Generation Partnership Project, 3rd Generation Partnership Project) started the LTE (Long Term Evolution, Long Term Evolution) project of UMTS (Universal Mobile Telecommunications System, Universal Mobile Telecommunications System) technology. Among them, MIMO (Multiple-Input Multiple-Output, Multiple Input Multiple Output) and OFDM (Orthogonal Frequency Division Multiplex, Orthogonal Frequency Division Multiplexing) are the two most critical technologies in this LTE project. [0003] In order to enable users at the cell edge to obtain high-quality communication voice and data services, higher peak th...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04L25/02
Inventor 王潇雨汪浩高振兴
Owner HONOR DEVICE CO LTD
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