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Correction method and device for zero intermediate frequency signal

A zero-IF, signal technology, applied in the field of zero-IF signal correction, can solve problems such as increasing system complexity, and achieve the effect of reducing implementation complexity

Active Publication Date: 2010-10-20
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In order to solve one of the above-mentioned problems, avoid the problem that the ZIF radio frequency scheme in the prior art needs to send a special training sequence to the system to increase the system complexity

Method used

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  • Correction method and device for zero intermediate frequency signal
  • Correction method and device for zero intermediate frequency signal
  • Correction method and device for zero intermediate frequency signal

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Embodiment Construction

[0039] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0040] The present invention proposes a method for correcting a ZIF (Zero Intermediate Frequency, zero intermediate frequency) signal in DPD (Digital Pre-Distortion, digital pre-distortion) processing. Such as figure 2 Shown is a flowchart of one embodiment 200 of the method of the present invention. The method includes the following steps:

[0041] Before doing the ZIF measurement, the feedback signal of the service signal needs to be corrected and processed first, and the feedback signal is converted into a ZIF signal form and synchronized with the transmitted signal. As an embodiment of the present invention, these processes mainly include 2 steps:

[0042] Step ...

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Abstract

The invention provides a correction method for a zero intermediate frequency signal and a digital pre-distortion treatment device in digital pre-distortion treatment. The method comprises the following steps: converting the feedback signal of a zero intermediate frequency service signal into the zero intermediate frequency feedback signal synchronous with a transmission signal; and according to the zero intermediate frequency feedback signal, measuring and correcting the zero intermediate frequency error. The method and the device provided by the invention use an arbitrary service signal to measure and correct the problems of imbalance and direct current leakage of ZIF without sending special training sequence, combine ZIF technology with DPD technology and lower the complexity of realizing ZIF correction.

Description

technical field [0001] The present invention generally relates to the technical field of communication, and more specifically relates to a method and a device for correcting zero-IF signals in digital pre-distortion processing. Background technique [0002] The design goal of the base station transmitter and receiver is to provide a reasonable number of performance indicators for the system design at the lowest cost. To achieve this goal, specific device performance needs to be improved to simplify the overall system design. At present, a ZIF (Zero Intermediate Frequency, zero intermediate frequency) architecture is usually adopted in the transmission link. The main driving force driving the development of this technology comes from the performance advantages of the RF (Radio Frequency, radio frequency) to baseband solution, which can reduce system complexity and cost while improving performance. like figure 1 Shown is the basic architecture of the zero-IF transmit link. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04B7/26
Inventor 熊军
Owner DATANG MOBILE COMM EQUIP CO LTD
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