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Modulator device with variable symbol rate and implementation method

An implementation method and symbol rate technology, applied in the field of communication, to achieve the effects of strong adaptability and scalability, less resource consumption, and improved adaptability

Inactive Publication Date: 2016-12-07
GUANGZHOU HAIGE COMM GRP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only achieve several symbol rate transmissions related to FIR interpolation multiples at various levels, which has great limitations. At the same time, with the variability of symbol rates, it also poses a great challenge to filter technology and resource consumption. challenge

Method used

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  • Modulator device with variable symbol rate and implementation method
  • Modulator device with variable symbol rate and implementation method
  • Modulator device with variable symbol rate and implementation method

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Embodiment Construction

[0040] In order to better understand the technical solution proposed by the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as figure 1As shown, the clock management module can be configured to generate working clocks of various frequencies required by the modulator: the symbol rate clock signal required by the modulation module, the N times the symbol rate clock signal required by the shaping filter, and the digital-to-analog converter DAC Working clock signal, where the symbol rate clock and N times the symbol rate clock are configurable, N is the interpolation multiple of the shaping filter; f_symbol is the frequency of the symbol rate clock, f_N.symbol is the frequency of N times the symbol rate clock; f_dac is The clock frequency of the digital-to-analog converter DAC.

[0042] The channel-coded information source passes through the modulation module to obtain t...

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Abstract

The invention provides a modulator device with a variable symbol rate and an implementation method. The modulator device comprises a configurable clock management module, a modulation module, a first clock domain conversion module, a shaping filter, a second clock domain conversion module, an interpolation filter and a DAC (Digital to Analog Converter), wherein the configurable clock management module is used for generating working clocks of the modules; an output data sampling rate of the interpolation filter is a final output sampling rate; and the working clock of the interpolation filter is consistent with a working clock of an output sampling rate in frequency. A modulator with the variable symbol rate is implemented by the configurable clock management module and the configurable interpolation multiple filter, and has the advantages of flexible configuration, low resource consumption, multi-stage selectable rate and the like.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to a variable symbol rate modulator device and an implementation method. Background technique [0002] In modern communication systems, in order to effectively use the channel, it is necessary to compress the spectrum of the signal, so as to improve the spectrum utilization of the system. With the development of wireless communication systems, the system usually requires that the transmission signal rate be variable according to different business requirements. Especially in the field of satellite communication, it is usually required to change the system to use different symbol rates for signal transmission according to different application scenarios. [0003] At present, the modulator of the variable symbol rate transmission system is usually realized by the following methods: First, according to the actual transmission rate, the DAC working clock is changed by reconfiguring...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0002
Inventor 廖世文
Owner GUANGZHOU HAIGE COMM GRP INC
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