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EDGE transmitter radio frequency index improvement method and apparatus

A transmitter and indicator technology, applied in digital transmission systems, electrical components, power management, etc., can solve problems such as difficulty in debugging, poor similarity between output power curves and Ramp curves, and power abrupt changes, and achieve the effect of switching spectrum optimization.

Active Publication Date: 2017-07-07
MORNINGCORE HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, the Ramp curve of some transmitters has no linear relationship with the actual output power. A slight adjustment of some Ramp voltages will cause a sudden change in power. difficulty
At the same time, in order to ensure the time domain index of the power, the Ramp curve cannot be adjusted violently.
[0007] Secondly, debug the Ramp timing, that is, by changing the initial position of Ramp, the output Ramp time domain characteristics are changed. This debugging method is mainly trial-and-error, and the efficiency is low. At the same time, the debugging is also restricted by the power time domain index.

Method used

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  • EDGE transmitter radio frequency index improvement method and apparatus
  • EDGE transmitter radio frequency index improvement method and apparatus
  • EDGE transmitter radio frequency index improvement method and apparatus

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Embodiment Construction

[0033] Embodiments of the present invention describe methods and apparatus for improving the RF index of the switching spectrum of an EDGE transmitter. According to this method, dummy bits are used to consider improving the switching spectrum characteristics.

[0034] Specifically, by adjusting the filling bits of the power ramping part, the power spectrum of the power ramping part can be optimized, thereby achieving the purpose of improving the EDGE switching spectrum. Moreover, the modification of the stuffing bits in the power ramping part can completely meet the requirements of the specification for the state of the GMSK modulator.

[0035] figure 2 is the modulation bits and power diagram for a GSM / EDGE burst. Such as figure 2 As shown, a GSM / EDGE burst (burst) includes n time slots (n is a natural number from 1 to 4). The transmitted data is represented by transmitted burst modulation bits d(i), and d(i) can be represented by n segments of useful data d useful (i)...

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Abstract

The present invention relates to an EDGE transmitter radio frequency index improvement method and apparatus. The method comprises the steps of optimizing dummy bits according to a relationship between an EDGE modulated signal and a radio frequency output signal; combining the optimized dummy bits and effective data modulation bits into modulation bits; and obtaining an optimized rising switch spectrum and falling switch spectrum by using the combined modulation bits.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and a device for improving the radio frequency index of an EDGE transmitter. Background technique [0002] EDGE (Enhanced Data Rate for GSM Evolution, enhanced data rate GSM evolution technology) is a transition technology from GSM to 3G. [0003] The EDGE switching spectrum measurement method defined in the GSM specification is the peak holding power at a certain position away from the center frequency and a certain bandwidth in the time domain test. Further described in the specification, the switching spectrum is defined as the transient peak power during power switching. Such as figure 1 As shown, the switching spectrum is the peak power caused by the ramp up from off to on and the ramp down from on to off in the burst power. According to the EDGE switching spectrum requirement of the specification 3GPP 51.010, the switching transient period including the uphil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/36H04W52/52
CPCH04L27/361H04W52/52
Inventor 陈文杰刘伟
Owner MORNINGCORE HLDG CO LTD