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Method and device for realizing equalization demodulation of GSM/EDGE system

An EDGE system and equalization demodulation technology, applied in the field of mobile communication, can solve the problems of inconvenience and inconvenience of receiving sensitivity, and achieve the effect of improving receiving sensitivity and improving signal-to-noise ratio

Inactive Publication Date: 2009-09-09
ZTE CORP
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Problems solved by technology

[0006] The technical solution for the balanced demodulation of the GSM / EDGE system provided by the prior art is to collect baseband digital signals at a single symbol rate sampling frequency, and then perform balanced demodulation on the collected baseband digital signals to reduce noise. influence and improve receiving sensitivity, but this technical solution has little effect on reducing the impact of noise and improving receiving sensitivity
[0007] In summary, the existing GSM / EDGE system balanced demodulation technology obviously has inconvenience and defects in actual use, so it is necessary to improve it

Method used

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  • Method and device for realizing equalization demodulation of GSM/EDGE system

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention 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.

[0042] The basic idea of ​​the present invention is to collect and receive baseband digital signals at a sampling frequency that is a multiple of the symbol rate, and perform equalized demodulation on the baseband digital signals. Thus, the signal-to-noise ratio is improved by increasing the sampling frequency, thereby greatly improving the receiving sensitivity.

[0043] The implementation device 100 of the GSM / EDGE system balanced demodulation provided by the present invention is as figure 1 As shown, the system 100 includes: a baseband signal acquisition module 101 and a balanced demodulation m...

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Abstract

The invention discloses a method for realizing equalization demodulation of a GSM / EDGE system, which comprises the steps of: acquiring and receiving a baseband digital signal at a sampling frequency as multiple code element rate; and performing equalization demodulation on the baseband digital signal. Correspondingly, the invention also provides a device for realizing equalization demodulation of the GSM / EDGE system. Thus the method and the device improve signal-to-noise ratio by improving the sampling frequency, thereby greatly improving the receiving sensitivity.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a method and device for realizing equalized demodulation of a GSM (Global System for Mobilecommunication) / EDGE (Enhanced Data rates for GSM Evolution, enhanced data rate for GSM). Background technique [0002] With the progress of society, the development of economy and technology, especially the development of computer, program-controlled switching and digital communication, in recent years, mobile communication system has developed rapidly due to its remarkable characteristics and superior performance, and has been applied in all aspects of society. [0003] At present, in the GSM system that has been used, it mainly supports the voice service function, but with the development of mobile communication technology and the increase of user demand for data services, increasing the data rate of the wireless interface will be further developed and utilized in the GSM system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03
Inventor 曹洁王伟辛胜利
Owner ZTE CORP
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