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Method, device and interference cancellation system for interference cancellation multipath selection

A technology of interference elimination and multipath selection, which is applied in the transmission system, electrical components, etc., can solve problems such as the inability to eliminate interference, and achieve the effect of maximizing the interference elimination gain

Active Publication Date: 2016-09-07
如东县东广物流有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the reconstructed MAI is inaccurate, not only will the interference not be eliminated, but new interference will be introduced

Method used

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  • Method, device and interference cancellation system for interference cancellation multipath selection
  • Method, device and interference cancellation system for interference cancellation multipath selection
  • Method, device and interference cancellation system for interference cancellation multipath selection

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Embodiment Construction

[0058] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0059] The relevant parameters will be used in the following description, and the description will be summarized here:

[0060] MinThld: the minimum value of the reconstruction multipath selection threshold;

[0061] MaxThld: the maximum value of the reconstruction multipath selection threshold;

[0062] PathThld: current reconstruction multipath selection threshold;

[0063] UpStep: Reconstruct the multipath selection threshold upward adjustment step;

[0064] DownStep: Reconstruct the multipath selection threshold downstep;

[0065] MaxFingerNum: ...

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Abstract

The present invention provides a method for multipath selection in an interference elimination system, comprising: calculating the number of multipath bars required for interference elimination this time, and performing filtering according to the result to obtain the filtered number of interference elimination multipath bars; Adjust the current multipath threshold according to the number of multipaths and reconstruction capabilities after interference elimination; according to the current multipath threshold, determine the paths that participate in reconstruction and interference cancellation among the multipaths to be reconstructed. The invention also provides an interference elimination multipath selection device and an interference elimination system. Through the interference elimination multipath selection method, device and interference elimination system of the present invention, limited hardware resources can be fully utilized to maximize the interference elimination gain.

Description

technical field [0001] The present invention relates to the technical field of mobile communication, and more specifically, relates to an interference elimination multipath selection method, device and interference elimination system. Background technique [0002] In the direct spread spectrum code division multiple access system, the uplink uses a pseudorandom (PN) sequence to spread and scramble the signal, so as to distinguish different code channels of the same user from different users. Due to the influence of factors such as channel fading, the orthogonality between different users and between different code channels of the same user will be destroyed to varying degrees. This causes mutual interference between different code channels of the same user among users. The more users supported by the uplink, the greater the interference to a certain target user. Interference Cancellation technology (Interference Cancellation, IC) first reconstructs the multiple access inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7115
Inventor 江德兴闫晓伟刘丛丛
Owner 如东县东广物流有限公司