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Digital phase noise modem

A modem and phase noise technology, applied in digital transmission systems, modulation carrier systems, electrical components, etc., to achieve accurate control

Pending Publication Date: 2020-08-28
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a digital phase noise modem to solve the modulation and demodulation problem of frequency source phase noise

Method used

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Embodiment Construction

[0045]In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0046] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0047] Such as figure 1 As shown, a digital phase noise modem includes a field programmable gate array 3, a data memory 1, a digital-to-analog converter 4, an analog-to-digital con...

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Abstract

The invention discloses a digital phase noise modem, which comprises a field programmable gate array, a data memory, a digital-to-analog converter, an analog-to-digital converter and a digital signalprocessor. The problem of digital modulation of signal phase noise is solved. The problem of digital demodulation of signal phase noise is solved. Digital modulation and demodulation of signal phase noise are realized, a phase noise suppression problem can be converted into an application problem of the phase noise, and the purpose of accurate phase application of signal transmission, clock synchronization, phase synchronization, time synchronization and the like is realized.

Description

technical field [0001] The application relates to the technical field of radio measurement and testing, in particular to a digital phase noise modem. Background technique [0002] Phase noise is a kind of random phase fluctuation, which distorts the linear variation trend of the phase of the frequency source. In the frequency domain, it appears as the broadening of the signal spectrum, and in the time domain, it appears as the jitter of the signal waveform. Phase noise is an important performance parameter in radar, radio communication, navigation and positioning and other application fields. It has a significant impact on the performance of communication systems and weaponry, and often becomes a limiting factor in system performance. For example, in modern receivers, receiver sensitivity, signal selectivity, digital signal processing, etc. are all limited by phase noise, especially in complex electromagnetic environments, the phase noise of local oscillator signals directly...

Claims

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Application Information

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IPC IPC(8): H04L27/00H04B1/00
CPCH04L27/0002H04L27/00H04B1/0017H04B1/0007
Inventor 田云峰曹宇胡斌张波宋旸刘全李东亮权莲姬王志巧李宏宇
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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