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Method for acquiring bursting signal signal-to-noise ratio in global mobile communication system

A technology for global mobile communication and burst signals, which is applied in the field of obtaining the signal-to-noise ratio of burst signals, can solve the problem of not being able to evaluate the quality of a single burst signal, and achieve the effect of improving demodulation and decoding capabilities and effective methods

Inactive Publication Date: 2005-07-13
HUAWEI TECH CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

Although the bit error rate of a speech frame can be calculated through the decoding step, since a speech frame contains 8 burst signals, the quality of a single burst signal cannot be evaluated

Method used

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  • Method for acquiring bursting signal signal-to-noise ratio in global mobile communication system
  • Method for acquiring bursting signal signal-to-noise ratio in global mobile communication system
  • Method for acquiring bursting signal signal-to-noise ratio in global mobile communication system

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] figure 2 Shown are the demodulation and decoding steps with the SNR of the burst signal. Such as figure 2 As shown, the signal received by the receiver from the wireless port forms a digital baseband burst signal after frequency conversion and filtering. The signal is represented by a series of digital symbols, and each digital symbol is a complex number, including two parts, the real part and the imaginary part. Estimate the signal-to-noise ratio of the burst signal and obtain its signal-to-noise ratio; use the signal-to-noise ratio of the burst signal to demodulate the burst signal to obtain judgment data; then use the same signal-to-noise ratio to obtain the judgment The data is decoded, and finally the decoding result is obtained. In the process of demodulating and decoding the burst signal, using the signal-to-noise ratio of ...

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Abstract

The invention proposes a method for obtaining the signal-to-noise ratio of burst signals in the global mobile communication system. This method uses the relationship between the burst signal received by the receiver of the base station and the known training sequence to separate the energy of the effective signal part and the energy of the noise part in the total energy of the burst signal, so as to obtain the burst signal signal-to-noise ratio. The method is effective, concise and practical, and is very suitable for system realization.

Description

technical field [0001] The invention relates to the global mobile communication system, in particular to a method for obtaining the signal-to-noise ratio of burst signals in the global mobile communication system. Background technique [0002] Global System for Mobile Communication is a widely used mobile communication system, and it is a typical time division multiple access system. In this system, the signal transmitted over the air is divided into equal time units, and a segment of signal divided into the smallest time unit is called a burst. The burst signal also becomes the smallest unit for the base station or mobile phone to demodulate and decode the air signal. [0003] bit number Domain head content 0-2 3 tail bit 3-60 58 information bit 61-86 26 training sequence 87-144 58 information bit 145-147 3 tai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04L1/20
CPCH04L1/20H04B1/1027
Inventor 余嘉联
Owner HUAWEI TECH CO LTD