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Digital power control method and device for EDGE carrier frequency

A technology of digital power and control method, applied in the direction of FM carrier system, etc., can solve the problems of 8PSK signal distortion, and achieve the effect of high precision, strong anti-disturbance ability and strong stability

Active Publication Date: 2006-07-12
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

The disadvantage of this technical scheme is that this scheme is only applicable to the GMSK modulation mode in which the output power amplitude does not change in a time slot. For the modulation mode of 8PSK, which has a large peak-to-average ratio of output power in a time slot, due to the negative feedback of closed-loop control The effect will suppress the power variation of the normal 8PSK signal in a time slot, causing the 8PSK signal to be distorted

Method used

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  • Digital power control method and device for EDGE carrier frequency
  • Digital power control method and device for EDGE carrier frequency
  • Digital power control method and device for EDGE carrier frequency

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Embodiment Construction

[0051] The core of the invention is a digital open-loop and closed-loop hybrid power control method. From the perspective of a single time slot, the power control of the current time slot is an open-loop control, but from the perspective of the entire system, it is a closed-loop control, which belongs to slow control.

[0052] The structure schematic diagram of the control scheme of this method is as follows: image 3 as shown,

[0053] In order to facilitate the description of the method of the present invention, the concepts of the power template curve and the digital power attenuator are firstly introduced.

[0054] In the EDGE system, the predetermined output power level of a time slot is determined by the sum of the static power level and the dynamic power level of the carrier frequency of the time slot.

[0055] In this carrier frequency power control method, the output power level of a certain time slot is mainly controlled by the power control information correspondi...

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Abstract

Present invention relates to digital power control method for enhancing data rate GSM evolution scheme (EDGE) carrier frequency. Said method adopts digital open / closed loop combined power combined power controlling means, adopting open-loop control output mode in single time slot, ensuring non distortion signal to 8PSK output power in one time slot, adopting closed-loop control output mode to multi - same power class time slot in same modulation mode, Said invention can adapt GMSK and 8PSK modulation mode with high carrier frequency output power and anti disturbance ability and stability.

Description

technical field [0001] The present invention relates to a digital power control method, in particular to a digital power control method and device for enhanced data rate GSM evolution scheme (EDGE) carrier frequency. Background technique [0002] GSM (Global System for Mobile Communications), as the second-generation digital mobile cellular communication system, has been widely used all over the world. By the end of 2003, my country's mobile users had exceeded 270 million. The development of 3G (third generation mobile communication system) is an inevitable trend for more new business needs. In recent years, a new technology EDGE (Enhanced Data Rate GSM Evolution Scheme) has become the focus of attention in the mobile field. After deploying EDGE technology on the existing GSM infrastructure, the mobile data service rate will be increased to GPRS (General Packet Radio Service) EDGE can be used as a transition solution from the second-generation mobile network to the third-gen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/10
Inventor 姚国强赵明杜智斌
Owner XFUSION DIGITAL TECH CO LTD
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