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Method and device for implementing automatic calibration in multicarrier system

A technology of multi-carrier system and automatic calibration, applied in the direction of multi-frequency code system, etc., can solve the problems of poor flexibility of automatic calibration and increase system cost, and achieve the effect of flexible automatic calibration, saving cost and improving adaptability.

Inactive Publication Date: 2006-07-05
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art that the closed-loop automatic calibration method needs to add an additional radio frequency link and increase the system cost, and at the same time solve the problem of poor flexibility of automatic calibration in the prior art

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  • Method and device for implementing automatic calibration in multicarrier system
  • Method and device for implementing automatic calibration in multicarrier system
  • Method and device for implementing automatic calibration in multicarrier system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] figure 1 The basic principle block diagram of the method and device for realizing automatic calibration of the multi-carrier system used by the present invention is shown, and the basic principle can be summarized as the following steps:

[0034] Multiplier unit 101: perform gain adjustment control for baseband signals I and Q;

[0035] Digital up-conversion processing unit 102: input the multiple baseband signals output by the multiplier unit 101 into a DUC (Digital UpConvertor, digital up-converter) to perform digital up-conversion processing according to the carrier f1...fn, and then perform combination to output a digital intermediate frequency signal;

[0036] D / A conversion unit 103: convert the digital intermediate frequency signal output by the digital up-conversion processing unit 102 into an analog intermediate frequency signal;

[0037] Radio freque...

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Abstract

The device consists of a multiplier, a digital up-conversion processor, a D / A converter, a radio frequency processor, a power amplifier, a power monitor, and a scaling gain controller. The method includes: after auto scaling begins, the back stage sends the auto-scaling parameters to the scaling gain controller to start scaling for total power; when difference between the value of total power and the value of total power preset by base station reaches in an approved range, starts auto-scaling for the single carrier wave; when the difference between the power value of signal carrier wave and the power value of the single carrier wave preset by base station reaches in an approved rang, stops the auto-scaling.

Description

technical field [0001] The invention relates to a mobile communication base station system in the communication field, in particular to a method and a device for realizing automatic calibration of a multi-carrier system. Background technique [0002] In the current communication base station system, in order to reduce the complexity of the forward transmission link and improve the integration and capacity of the system, most of them adopt the solution of digital intermediate frequency multi-carrier, and the multi-carrier signals are combined after digital up-conversion to intermediate frequency Processing, and then digital-to-analog D / A conversion into analog intermediate frequency signals, and then multi-carrier signals share an analog radio frequency transmission link to transmit multi-carrier signals into the air. Therefore, there are multiple carrier signals in a sector covered by the base station. Therefore, when the base station performs automatic calibration, in addit...

Claims

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Application Information

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IPC IPC(8): H04L27/26
Inventor 王志坚
Owner ZTE CORP