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A construction method and system for an additive uniquely decomposable constellation group

A construction method and constellation group technology, applied in the field of visible light communication, can solve the problem of signal confusion and analysis of the original signal, etc.

Active Publication Date: 2019-10-15
THE PLA INFORMATION ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] An embodiment of the present invention provides an additively decomposable constellation group to solve the technical problems of signal confusion in the constellation structure in the prior art and the inability to parse the original signal from the received signal

Method used

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  • A construction method and system for an additive uniquely decomposable constellation group
  • A construction method and system for an additive uniquely decomposable constellation group
  • A construction method and system for an additive uniquely decomposable constellation group

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Embodiment 1

[0072] The embodiment of the present invention discloses an additive uniquely decomposable constellation group, see figure 1 shown, including:

[0073] Step S101, respectively calculating a first Hellinger distance between optical powers of multiple signals sent by a first user and a second Hellinger distance between optical powers of multiple signals sent by a second user.

[0074] The first user can send a visible light signal through the first LED, and the second user can send a visible light signal through the second LED; as a solution, here, the energy of the visible light signal sent by the first user and the second user is represented by the size of the optical power .

[0075] The Hellinger distance is the distance between the square roots of the optical power values ​​of the same or different optical signals sent by the first user; for example, the optical power of the same or different optical signals sent by the first user is 0 2 and 5 2 , then the Hellinger dist...

Embodiment 2

[0083] An embodiment of the present invention provides a method for constructing an additive uniquely decomposable constellation, see Figure 2a-2c The structure shown, specifically includes:

[0084] Step S201, respectively calculating a first Hellinger distance between optical powers of multiple signals sent by a first user and a second Hellinger distance between optical powers of multiple signals sent by a second user.

[0085] This part of the content has been described in detail in the above embodiments, and will not be repeated here.

[0086] In the embodiment of the present invention, calculating the first Hellinger distance between the optical powers of the multiple signals sent by the first user may include:

[0087] 1) Obtaining the optical power of each of the multiple signals sent by the first user;

[0088] 2) calculating the first Hellinger distance according to the optical power of each signal;

[0089] Calculating the second Hellinger distance between the op...

Embodiment 3

[0134] The embodiment of the present invention discloses a construction system for an additive uniquely decomposable constellation group, see Figure 5 As shown, it includes a calculation module 501 , a constellation construction module 503 and a constellation group construction module 505 . in:

[0135] Calculation module 501, configured to respectively calculate the first Hullinger distance between the optical powers of the multiple signals sent by the first user and the first Hullinger distance between the optical powers of the multiple signals sent by the second user ;

[0136] The first Hellinger distance between the optical powers of the multiple signals sent by the first user is the difference between the square roots of the two optical power values ​​in the optical powers of the multiple signals sent by the first user; similarly, the first user The second Hellinger distance between two optical powers among the optical powers of the multiple signals sent by the second...

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Abstract

The invention discloses a construction method of an additivity unique-decomposable constellation group and a system thereof. The method comprises the following steps: respectively computing a first Hellinger distance among optical power of multiple signals sent by a first user, and a second Hellinger distance among optical power of multiple signals sent by a second user; constructing a first constellation comprising multiple elements with preset number and numerical value, and a second constellation comprising multiple elements with the preset number and numerical value, wherein the elements of the first constellation are related to the first Hellinger distance, and the elements of the second constellation are related to the second Hellinger distance; adding various elements of the first constellation and various elements of the second constellation, and constructing the constellation group according to the first constellation and the second constellation if any two values in multiple obtained values are non-equal. This scheme disclosed by the invention can achieve a technical effect of effectively resolving optical power of various constellations from the optical power received by an avalanche diode.

Description

technical field [0001] The present invention relates to the technical field of visible light communication, in particular to a method and system for constructing an additive unique decomposable constellation group. Background technique [0002] In recent years, visible light communication system has attracted extensive attention due to its wide spectrum, no electromagnetic interference, and environmental protection, and is considered as a realization scheme for future wireless communication systems. In addition, since visible light systems can provide one-way, high-speed, broadcast communication, multi-user systems carrying multiple applications are also favored by researchers. [0003] In order to better ensure the reliability of multi-user systems in visible light communication during long-distance communication, it has become an industry standard to use Single Photon Avalanche Diode (SPAD) instead of Photon-Diode (PD) as a signal detection device. The mainstream approach...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H04B10/60
Inventor 田忠骏韩松邬江兴于宏毅汪涛张效义张剑仵国锋
Owner THE PLA INFORMATION ENG UNIV
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