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GSM(Global System for Mobile Communications) system, automatic average power control device for digital GSM timeslot signal, and automatic average power control device for digital GSM timeslot signal

A technology of automatic power control and GSM system, which is applied in power management, wireless communication, electrical components, etc., can solve the problem of low detection accuracy of signal average power, and achieve the effect of fast accuracy and speed, and fast start-up speed

Inactive Publication Date: 2014-03-26
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the present invention provides a device and method for automatic control of average power of digital GSM time slot signals, as well as a GSM system, which solves the problem of low detection accuracy of traditional GSM system signal average power, and the detection speed of average power is very fast , the starting control accuracy of the average power automatic control is very high

Method used

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  • GSM(Global System for Mobile Communications) system, automatic average power control device for digital GSM timeslot signal, and automatic average power control device for digital GSM timeslot signal
  • GSM(Global System for Mobile Communications) system, automatic average power control device for digital GSM timeslot signal, and automatic average power control device for digital GSM timeslot signal
  • GSM(Global System for Mobile Communications) system, automatic average power control device for digital GSM timeslot signal, and automatic average power control device for digital GSM timeslot signal

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Embodiment 1

[0029] Such as image 3 Shown is the structural representation of the average power automatic control device of the digital GSM time slot signal in an embodiment of the present invention, including a gain control module 301, a time slot synchronization module 302, a time slot power detection module 303 and a gain calculation module 304;

[0030] The gain control module 301 is used to multiply the input signal of the GSM system with the gain value to generate an output signal, and simultaneously feed the output signal back to the time slot power detection module 303;

[0031] In a preferred embodiment, the input signal I can be in / Q in Multiplied by the currently effective gain value Gain, converted to output signal I out / Q out After the output; at the same time the output signal I out / Q out Then feed back to the output time slot power detection module 303 .

[0032] The time slot synchronization module 302 is configured to perform time slot synchronization on the inpu...

Embodiment 2

[0054] The average power automatic control device of above-mentioned digital GSM time slot signal can be applied in the GSM system, can guarantee that the average power of GSM signal can not exceed threshold range, and the signal average power detection accuracy of GSM system is very high, according to this the present invention also A kind of GSM system is provided, and the main signal link of this GSM system comprises the average value power automatic control device of digital GSM time slot signal; repeat;

[0055] Such as Figure 5 As shown, it is a structural schematic diagram of the GSM system in an embodiment, including a mixer 501 connected in sequence, an analog-to-digital converter (Analog-to-Digital Converter, ADC) 502, an average power automatic control device 503, a digital-to-analog Converter (Digital to analog converter, DAC) 504, quadrature modem 505 and power amplifier (Power Amplifier, PA) 506;

[0056] In this embodiment, the average power automatic control...

Embodiment 3

[0066] Correspondingly, the present invention also provides a kind of average power automatic control method of digital GSM timeslot signal, such as Figure 6 As shown, in a preferred embodiment, the following steps may be included:

[0067] S11. Multiply the input signal of the GSM system by the gain value to generate an output signal;

[0068] In a preferred embodiment, the input signal I in / Q in Multiplied by the currently effective gain value Gain, converted to output signal I out / Q out post output;

[0069] S12. Perform time slot synchronization on the input signal to generate a time slot synchronization signal;

[0070] In a preferred embodiment, the input signal I can be in / Q in To perform time slot synchronization, the time slot synchronization signal can be generated by a known method, which will not be described in detail here;

[0071] S13. Calculate the average power of each time slot of the output signal according to the time slot synchronization signal...

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Abstract

The invention discloses an automatic average power control device for a digital GSM (Global System for Mobile Communications) timeslot signal. The device includes a gain control module, a timeslot synchronization module, a timeslot power detection module and a gain calculation module, wherein the gain control module multiplies an input signal of a GSM system by a gain value and generates an output signal; the timeslot synchronization module carries out timeslot synchronization of the input signal and generates a timeslot synchronization signal; the timeslot power detection module calculates the average power of each timeslot of the output signal; the gain calculation module makes a comparison between the average power and a default threshold value and determines the gain value. The invention correspondingly provides an automatic average power control method for the digital GSM timeslot signal and the GSM system. The invention solves the problem of low signal average power detection precision of the traditional GSM system, and has the advantages of extremely fast average power detection and extremely high starting precision of automatic average power control.

Description

technical field [0001] The present invention relates to the field of signal processing of mobile communications, in particular to a device for automatically controlling average power of digital GSM (Global System for Mobile Communications) time slot signals, and an automatic control device for average power of digital GSM time slot signals Method and a GSM system. Background technique [0002] At the transmitting end of the existing digital communication system, especially at the transmitting end of some relay equipment (such as RRU or repeater), in order to control the maximum output average power of the equipment, an analog ALC (Automatic Level Control, automatic level control) circuit, which can ensure that the maximum output average power is controllable, and also requires the ALC circuit to work normally under the condition of deep start control. However, the traditional analog ALC circuit has disadvantages such as poor precision, poor consistency, poor temperature cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/52
Inventor 黄小锋介利军郑良张占胜
Owner COMBA TELECOM SYST CHINA LTD
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