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Method for reducing interference in CDMA system

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

Inactive Publication Date: 2006-05-24
KAIMING INFORMATION SCIENCE & TECHNOLOGY 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 interference in CDMA system
  • Method for reducing interference in CDMA system
  • Method for reducing interference in CDMA system

Examples

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Embodiment Construction

[0053] pass below Figure 5 ~ Figure 8 , to describe the specific implementation of the present invention in detail, so as to further understand the content of the present invention.

[0054] The present invention provides a method for reducing interference in a code division multiple access system, which includes: a step of performing weighted spread spectrum on the data to be transmitted by the base station or user terminal equipment, and performing weighted spread spectrum on the data received by the base station or user terminal equipment When the subsequent signal is despread, the step of weighting the local code sequence;

[0055] Such as Figure 5 Shown, be that the present invention is applied to the method that signal is carried out weighted spread spectrum in CDMA system, comprises the following steps:

[0056] Step 1. Initialize the arrays W, C and R whose length is L, where L is the length of the spreading code sequence, and store the spreading codes in C in one-...

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Abstract

The method includes following steps: carrying out weighted spread spectrum for data to be transmitted from base station or subscriber terminal equipment; the method carried out weighting process for local code sequence when carrying out de-spread process for weighted spread signal received by base station or subscriber terminal equipment. Features are: flexible configuration of weighted sequence, high adaptability and reducing interference reliably.

Description

technical field [0001] The present invention relates to a wireless communication system, in particular to a method for reducing interference of user terminal equipment or base station equipment 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 of the fixed telecommunication ne...

Claims

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Application Information

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IPC IPC(8): H04B1/7107H04B1/712
Inventor 师延山
Owner KAIMING INFORMATION SCIENCE & TECHNOLOGY CO LTD
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