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A mixed-path processing method in CDMA system

A code division multiple access and processing method technology, which is applied in the field of fat path processing in the multipath update of the code division multiple access wireless communication system, can solve problems such as multipath position adjustment, and achieve the effect of improving demodulation performance

Inactive Publication Date: 2011-05-18
ZTE CORP
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Problems solved by technology

[0009] In view of the above, the purpose of the present invention is to propose a simple and effective CDMA system fat path processing method to solve the problem of adjusting the location of multipaths that are very close

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  • A mixed-path processing method in CDMA system
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  • A mixed-path processing method in CDMA system

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Embodiment Construction

[0043] The present invention will be further described in detail according to the accompanying drawings and embodiments. Based on these drawings, those skilled in the art can easily realize the present invention.

[0044] When the multipath search module or the multipath tracking module requires to update the phase of one multipath, and the phase change is less than 1 chip, it can be called multipath phase slip. The conventional method is to directly update the multipath phase according to the request of the multipath search module or the multipath tracking module. However, the method of the present invention will make three kinds of decisions according to different situations: update, not update or delete the multipath according to the request.

[0045] figure 1 It is a flow chart of method scheme 1 of the present invention. Such as figure 1 As shown, it includes the following steps:

[0046] Processing block 101 corresponds to the first step of the method scheme one of ...

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Abstract

The technical scheme of a mixed-path processing method in CDMA system is that: when two multi-paths are very close to each other, if the energy of each multi-path is equivalent, they should only slide in opposite direction or keep the current position; if the energy of one multi-path is evidently higher than the other, then the strong one can slide freely, and the weak one can only slide in a deviating direction apart from the strong path. On the basis of the above, a further rule is included in order to enhance the performance, i.e. when the weak multi-path is very close to the strong one and still slides to the strong one, and then delete the weak path. If the present method is adopted, it can keep a stable multi-path updating when processing a closer multi-path updating, and prevent multi-paths sliding to each other, and thus improve the demodulating performance.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a fat path processing method in multipath update of a Code Division Multiple Access (CDMA) wireless communication system. Background technique [0002] CDMA is a multiple access method based on spread spectrum technology and has recently become an alternative to the existing Frequency Division Multiple Access (FDMA) and Time Division Multiple Access (TDMA) methods. Another multiple access method applied externally to communication systems. Compared with existing methods, CDMA has many advantages, such as high spectrum utilization and simple planning. The systems that currently adopt the CDMA method mainly include: Narrowband CDMA (Interim Standard 95 (Interim Standard 95, referred to as IS-95)) system, Wideband CDMA (Wideband CDMA) (hereinafter referred to as WCDMA) system, CDMA2000 system, Time Division Synchronous Code Division Multiple Access (Time Division Sy...

Claims

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Application Information

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IPC IPC(8): H04B1/711H04B1/707
CPCH04B1/7115
Inventor 丁杰伟李灵任震徐海燕
Owner ZTE CORP
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