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Construction method of equalizer

A construction method and equalizer technology, which can be used in transmission control/equalization, close-range systems, free space transmission, etc., and can solve problems such as limiting the application range of equalization circuits.

Active Publication Date: 2020-04-21
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can only be designed for a specific system, and it is difficult to be reused in other visible light communication systems, making this "bottom-up" method limit the application range of equalization circuits

Method used

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  • Construction method of equalizer
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  • Construction method of equalizer

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] refer to figure 1 , figure 1 A method for constructing an equalizer is provided in a schematic embodiment of the present invention, including:

[0029] S1, measure the visible light communication system, and obtain the transfer function of the equalization circuit.

[0030] In the embodiment of the present invention, the transfer function H of the visible light communication system is obtained by measuring the visible light communication system and fitting the spectrum response curve vector system (S); the reciprocal of the transfer function of the visible light communication system is the equalization circuit transfer function H ideal (s). In the embodiment of the present invention, the transfer function H of ...

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Abstract

The invention provides a construction method of an equalizer, which comprises the following steps: S1, measuring a visible light communication system to obtain an equalizer circuit transfer function Hideal (S); S2, setting an all-pass network transfer function Hallpass (s), enabling the zero point position of the all-pass network transfer function Hallpass (s) to be the same as the pole position of the equalization circuit transfer function Hidal (s), and obtaining a zero pole located in a negative real number region of the complex frequency domain; S3, obtaining an active circuit transfer function HRC (S) through a zero pole, a passive circuit transfer function Hpassive (S) is obtained through the equalization circuit transfer function Hideal (S) and the zero pole, the active circuit transfer function HRC (S) corresponds to the active circuit, and the passive circuit transfer function Hpassive (S) corresponds to at least one first circuit; S4, connecting at least one first circuit toobtain a passive circuit; and the equalizer is connected with the passive circuit and the active circuit, so that the pole position of the active circuit transfer function HRC (S) is the same as the pole position of the passive circuit transfer function Hpassive (S), and the equalizer is obtained.

Description

technical field [0001] The invention relates to the field of universal equalizer design for indoor visible light communication systems, in particular to a method for constructing an equalizer. Background technique [0002] The traditional wireless communication system has a high signal-to-noise ratio and a low data transmission rate, so that the wireless communication application needs to be improved urgently. Light Emitting Diode (LED) has the characteristics of good modulation performance and high response sensitivity, so that it can have both lighting and communication characteristics, and then it can be applied to the field of optical communication to meet the needs of integrated lighting and communication. [0003] In the field of LED optical communication, the LED type white light LED occupies the largest market share. The white light LED is produced by mixing blue light with yellow light produced by exciting fluorescence with blue light. But the modulation bandwidth ...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04B10/116
CPCH04B7/005H04B10/116
Inventor 陈雄斌闵成彧
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI