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An apparatus and method for correcting error vector amplitudes of wideband vector modulated signals

A technology for vector modulation and modulation of signals, applied in the field of communication, can solve the problems of large error vector amplitude, inability to meet the application requirements of broadband vector modulation signals, and poor quality of broadband vector modulation signals.

Active Publication Date: 2018-12-11
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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Problems solved by technology

At present, broadband vector modulation signals are usually obtained by up-converting intermediate frequency signals to radio frequencies. The quality of the directly obtained broadband vector modulation signals is very poor, and the corresponding error vector amplitude is large, which cannot meet the increasingly wide application requirements of broadband vector modulation signals.

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  • An apparatus and method for correcting error vector amplitudes of wideband vector modulated signals
  • An apparatus and method for correcting error vector amplitudes of wideband vector modulated signals
  • An apparatus and method for correcting error vector amplitudes of wideband vector modulated signals

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Embodiment Construction

[0039] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0040] Such as figure 1 As shown, this preferred embodiment provides an error vector amplitude correction device for broadband vector modulation signals, including: a computer 1, an arbitrary waveform generator 2, an upconverter 3, a real-time oscilloscope 4, a reference clock 5, and a power divider A6 (first power divider), power divider B7 (second power divider).

[0041] Among them, the computer 1 is used to simulate and generate the waveform file of the ideal intermediate frequency modulation signal, and upload it to ...

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Abstract

An apparatus and method for error vector amplitude correction of wideband vector modulated signals are disclosed. The device includes a computer, an arbitrary waveform generator, an upconverter, a real-time oscilloscope and a reference clock. The method of the invention reduces the error vector amplitude of the wideband vector modulation signal through the error vector amplitude correction of thewideband vector modulation signal by the computer for many times, and provides the wideband vector modulation signal with high quality for the fields of wideband digital communication, the calibrationof the vector signal analyzer and the vector signal generator, and the like.

Description

technical field [0001] The present invention relates to the field of communication. More specifically, it relates to a device and method for error vector magnitude correction of a broadband vector modulation signal. Background technique [0002] The rapid development of communication technology poses new challenges to the transmission rate, bandwidth and transmission capacity of the signal. The broadband vector modulation signal has received more and more attention because of its strong anti-noise ability and high bandwidth efficiency. The error vector magnitude is a set of errors obtained by comparing the actual signal vector with the reference signal vector, where the reference signal vector is the ideal signal vector represented by the constellation points on the standard constellation diagram corresponding to the actual signal vector. Error vector magnitude is the most commonly used evaluation parameter to evaluate the quality of broadband vector modulation signals and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00
CPCH04B17/00
Inventor 姜河龚鹏伟刘爽谢文谌贝马红梅雷垒郑从伟
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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