Interference and noise elimination method and device

A technology of interference noise and noise elimination, applied in the field of communication, can solve problems such as difficulty in obtaining interference elimination effect and deterioration of system performance, and achieve the effect of increasing throughput and improving communication characteristics

Inactive Publication Date: 2012-08-15
ZTE CORP
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Problems solved by technology

It does not rely on any additional transmitter configuration, so it does not need to do any additional standardization work, but does not rely on any additional signal differentiation means (such as frequency division, code division, interleaver division), but only relies on space division means, it is very easy It is difficult to obtain a satisfactory interference cancellation effect, and when the interference in the system is relatively small and it is difficult to distinguish it by the spatial dimension, it will cause the deterioration of the system performance

Method used

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  • Interference and noise elimination method and device
  • Interference and noise elimination method and device
  • Interference and noise elimination method and device

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Embodiment Construction

[0015] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0016] figure 1 is a flowchart of an interference and noise equalization method according to an embodiment of the present invention. Such as figure 1 As shown, the interference and noise equalization method according to the embodiment of the present invention includes:

[0017] Step S102, extracting the received pilot sequence of the user from the received signal;

[0018] Step S104, according to the extracted receiving pilot sequence and the local transmitting pilot sequence, obtain the interference noise spatial characteristic matrix;

[0019] Step S106, according to the above-mentioned interference noise spatial characteristic matrix, determine the relative ratio of interference and noise;

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Abstract

The invention discloses an interference and noise elimination method and device. The method comprises the following steps of: extracting a pilot frequency sequence received by a user from a receiving signal, and obtaining an interference and noise spatial characteristic matrix according to the extracted receiving pilot frequency sequence and a local sending pilot frequency sequence; determining an interference and noise relative ratio according to the interference and noise spatial characteristic matrix; and carrying out comparison on the determined interference and noise relative ratio and the predetermined threshold, selecting a corresponding equalization algorithm to carry out equalization according to a comparative result, and eliminating the interference and noise. According to the technical scheme provided by the invention, the problem of deteriorated system performances due to adopting an equalization method in a robust mode because of the unknown magnitude of interference in a communication system is solved, thereby improving the communication characteristics of cell edge users, and farthest improving the throughput of cell centre users.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for eliminating interference and noise. Background technique [0002] The data rate provided by the existing cellular mobile communication system is very different between the center of the cell and the edge of the cell, which not only affects the capacity of the entire system, but also causes great fluctuations in the quality of service obtained by users in different locations. Therefore, the new generation of broadband wireless communication systems currently being developed all regard improving the performance of cell edge users as one of the main demand indicators. [0003] Inter-cell interference (Inter-cell Interference, ICI) is an inherent problem in cellular mobile communication systems. The traditional solution is to use frequency reuse, and the reuse coefficient = 1, that is, adjacent cells use the same frequency resources. Interference is severe a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L25/03
CPCH04L25/03019H04L2025/03535H04L2025/03617
Inventor 张磊
Owner ZTE CORP
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