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Method for reducing receiving interference in CDMA system

A code division multiple access, receiving interference technology, applied in transmission systems, electrical components, etc., can solve problems such as despreading errors

Inactive Publication Date: 2006-05-24
XUANPU INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that when the amplitude of B is greater than 4 times that of A, there will be an inversion and a despreading error will occur.

Method used

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  • Method for reducing receiving interference in CDMA system
  • Method for reducing receiving interference in CDMA system
  • Method for reducing receiving interference in CDMA system

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Embodiment Construction

[0114] pass below Figure 5 ~ Figure 7 , to introduce a specific embodiment of the present invention in detail, so as to further understand the content of the present invention.

[0115] Such as Figure 5 As shown, the present invention provides a method for reducing reception interference in a code division multiple access system, which includes the following steps:

[0116] Step 1. Initialize the array and parameters required in the calculation process:

[0117] Step 1.1, initialize an array C with a length of G, which is used to store the signal to be despread received by the receiver, and G is the length of the signal to be despread;

[0118] Step 1.2, initializing an array E with a length of L, the array E is used to store the local code sequence, and L is the length of the local code sequence;

[0119] Step 1.3, initialize variables Option, S, H 1 、H 2 、D 1 、D 2 , q, Result_R and Result_Q;

[0120] Step 1.3.1, set the value of Option to 1 or 2 to select whether t...

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Abstract

Based on distribution information of interference signal in signal sequence, the invention sets up sequence of weight value. Weighting process is carried out for signal sequence or sequence of local code to calculate relevant result. The normalization process is carried out for the said relevant result. The method takes full advantage of information of interference signal in signal sequence and sets up weighting value smartly so as to reach purpose of lowering received interference. Features of the method are simple and easy of implementation.

Description

technical field [0001] The present invention relates to a method applied to a wireless communication system, in particular to a method for reducing interference of a user terminal device or a receiving device of a base station in a Code-Division Multiple Access (CDMA) mobile communication system. Background technique [0002] With the development of the times, people's requirements for communication, including requirements for communication quality and service types, are getting higher and higher. The third generation (3G) mobile communication system has been developed to meet this requirement. It takes global general use and system integration as the basic starting point, and tries to establish a global mobile integrated service digital network, integrating various mobile communication systems such as cellular, cordless, paging, trunking, mobile data, mobile satellite, air and sea. It provides a variety of voice and non-voice services that are compatible with the services ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7107H04B1/712
Inventor 师延山
Owner XUANPU INDUSTRY CO LTD
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