CN107147598B - A kind of underwater visible light communication methods, devices and systems - Google Patents

A kind of underwater visible light communication methods, devices and systems Download PDF

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Publication number
CN107147598B
CN107147598B CN201710252313.XA CN201710252313A CN107147598B CN 107147598 B CN107147598 B CN 107147598B CN 201710252313 A CN201710252313 A CN 201710252313A CN 107147598 B CN107147598 B CN 107147598B
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China
Prior art keywords
signal
led
visible light
receiving
light communication
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CN201710252313.XA
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Chinese (zh)
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CN107147598A (en
Inventor
汪涛
王超
于宏毅
朱义君
张剑
田忠骏
张二峰
仵国锋
任嘉伟
Original Assignee
东莞信大融合创新研究院
中国人民解放军信息工程大学
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Priority to CN201710252313.XA priority Critical patent/CN107147598B/en
Publication of CN107147598A publication Critical patent/CN107147598A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; Arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks ; Receiver end arrangements for processing baseband signals
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03343Arrangements at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114Indoor or close-range type systems
    • H04B10/116Visible light communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50Transmitters
    • H04B10/501Structural aspects
    • H04B10/502LED transmitters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water

Abstract

This application discloses a kind of underwater visible light communication methods, devices and systems, the described method includes: the signal sent by multiple LED that SPAD receives transmitting terminal, wherein, the signal that the multiple LED is sent is that the transmitting terminal executes the multiplex coding signal obtained after serioparallel exchange and signal processing operations to target data;Successive interference cancellation is carried out to the superposed signal for meeting Poisson distribution of SPAD output to handle to obtain the corresponding detection signal of the multiple LED;Detection signal corresponding to the multiple LED executes parallel-serial conversion and operates to obtain the target data.The methods, devices and systems of the embodiment of the present application can be improved the detection performance of the receiving end of underwater visible light communication system, effectively realize the reliable communication of underwater visible light communication system.

Description

A kind of underwater visible light communication methods, devices and systems

Technical field

This application involves visible light communication field more particularly to a kind of underwater visible light communication methods, devices and systems.

Background technique

Visible light communication (Visible Light Communication, VLC) technology is as a kind of emerging communication skill Art refers to the technology communicated using visible light as information carrier.According to the optical transmission window characteristic of seawater, can utilize can Blue green light in light-exposed wave band realizes underwater visible light communication.

Underwater visible light communication system includes transmitting terminal and receiving end, and target data is passed through modulating-coding by transmitting terminal, is carried In the visible light that frequency is issued to light emitting diode (Light Emitting Diode, LED), and then the visible light that LED is issued It is transmitted in optical channel under water;Receiving end, which receives, carries the visible light of target data, and to the visible light received into Row detection processing, and then extract the target data carried in visible light.

In the prior art, the transmitting terminal of underwater visible light communication system is usually by target data carrier frequency on single led It is transmitted.But since single led electro-optic conversion has nonlinear characteristic, so that receiving end is in signal detection processing When the bit error rate it is higher, it is lower so as to cause the detection performance of receiving end.

The detection performance for how improving the receiving end of underwater visible light communication system is that the application technology to be solved is asked Topic.

Summary of the invention

The embodiment of the present application provides a kind of underwater visible light communication methods, devices and systems, to solve in the prior art The lower problem of the detection performance of the receiving end of underwater visible light communication system.

The embodiment of the present application provides a kind of underwater visible light communication method, and the method is applied in receiving end, the method Include:

The signal sent by multiple Light-emitting diode LED that single-photon avalanche diode SPAD receives transmitting terminal, wherein The signal that the multiple LED is sent is that the transmitting terminal is more to obtaining after target data execution serioparallel exchange and signal processing Road encoded signal;

The superposed signal progress successive interference cancellation for meeting Poisson distribution of SPAD output is handled to obtain described more The corresponding detection signal of a LED;

Detection signal corresponding to the multiple LED executes parallel-serial conversion and operates to obtain the target data.

Optionally, the successive interference cancellation processing includes successive ignition decoding operation, wherein the successive ignition decoding The m times decoding operate in operation specifically includes:

According to following step, the corresponding detection signal of k-th of LED is determined:

It determines that k-th of LED is corresponding according to the kth input signal for inputting the signal estimator by signal estimator to estimate Count signal;

The corresponding estimation signal of k-th of LED is executed by kth deinterleaver and deinterleaves operation, is determined k-th The corresponding de-interleaved signal of LED, wherein the kth deinterleaver and in transmitting terminal friendship corresponding with k-th of LED It is corresponding to knit device;

Decoding operate is executed to the corresponding de-interleaved signal of k-th of LED by kth decoder, is determined described k-th The corresponding detection signal of LED and decoded signal, wherein the kth decoder in the transmitting terminal and k-th of LED Corresponding encoder is corresponding;

The operation that interweaves is executed to the corresponding decoded signal of k-th of LED by kth interleaver, and the behaviour that interweaves will be executed Signal after work inputs the signal estimator as+1 input signal of kth, wherein the kth interleaver in the hair Sending end interleaver corresponding with k-th of LED is identical.

Optionally, work as m=1, when k=1, the 1st input signal is the superposed signal;

Work as m > 1, when k=1, the 1st input signal is the N+1 input signal of determination in the m-1 time iterative decoding, In, N is the number of the multiple LED.

Optionally, k-th of LED is determined according to the kth input signal for inputting the signal estimator by signal estimator Corresponding estimation signal, comprising:

The signal estimator determines the corresponding estimation signal of k-th of LED by following formula:

Wherein, eESE(xk) indicate that the corresponding estimation signal of k-th of LED, y indicate the Poisson meter of the SPAD output Number, cpIndicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that k-th of LED is sent, h indicates Underwater Optical letter The channel parameter in road,Indicate the corresponding poisson noise of k-th of LED determined according to the kth input signal.

Optionally, the channel parameter h of the underwater optical channel is just to be distributed very much lognormal model and illiteracy by logarithm What special Carlow numerical simulation MCNS was determined.

The embodiment of the present application also provides a kind of underwater visible light communication method, and the method is applied in transmitting terminal, the side Method includes:

Receive target data to be sent;

Serioparallel exchange is executed to the target data and operates determining multiple signals;

Signal processing operations are executed to the multiple signals and obtain multiplex coding signal, and by with the multiplex coding Multiple LED of signal same number send the multiplex coding signal to receiving end.

Optionally, the signal processing operations include interleaving treatment, coded treatment and on-off keying OOK modulation treatment.

Optionally, by multiple LED with the multiplex coding signal same number by the multiplex coding signal to connecing Receiving end is sent, comprising:

By in single lamps and lanterns with multiple LED of the multiplex coding signal same number by the multiplex coding signal to Receiving end is sent.

The embodiment of the present application also provides a kind of underwater visible light communication device, and described device is applied in receiving end, the dress Set includes: receiving unit, decoding unit and converting unit, in which:

Receiving unit, for receiving multiple Light-emitting diode LED hair of transmitting terminal by single-photon avalanche diode SPAD The signal sent, wherein the signal that the multiple LED is sent is that the transmitting terminal executes at serioparallel exchange and signal target data The multiplex coding signal obtained after reason operation;

Decoding unit, the superposed signal for meeting Poisson distribution for exporting to the SPAD is using at successive interference cancellation Reason obtains the corresponding detection signal of the multiple LED;

Converting unit operates to obtain the target for executing parallel-serial conversion to the corresponding detection signal of the multiple LED Data.

The embodiment of the present application also provides a kind of underwater visible light communication device, and described device is applied in transmitting terminal, the dress Set includes: receiving unit, converting unit, signal processing unit and transmission unit, in which:

Receiving unit, for receiving target data to be sent;

Converting unit operates determining multiple signals for executing serioparallel exchange to the target data;

Signal processing unit obtains multiplex coding signal for executing signal processing operations to the multiple signals;

Transmission unit, for by believing the multiplex coding with multiple LED of the multiplex coding signal same number Number to receiving end send.

The embodiment of the present application also provides a kind of underwater visible light communication system, the system comprises: it applies in transmitting terminal Underwater visible light communication device and apply underwater visible light communication device in receiving end.

The embodiment of the present application use at least one above-mentioned technical solution can reach it is following the utility model has the advantages that

The signal that the receiving end of underwater visible light communication system is sent by multiple LED that SPAD receives transmitting terminal, wherein The signal that the multiple LED is sent is that the transmitting terminal is more to obtaining after target data execution serioparallel exchange and signal processing Road encoded signal handles to obtain described to the superposed signal progress successive interference cancellation for meeting Poisson distribution of SPAD output The corresponding detection signal of multiple LED, so to the corresponding detection signal of the multiple LED execute parallel-serial conversion operate to obtain it is described Target data, so as to improve underwater visible light communication system receiving end detection performance, effectively realize underwater visible light The reliable communication of communication system.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:

Fig. 1 is a kind of flow diagram of underwater visible light communication method provided by the embodiments of the present application;

Fig. 2 is the schematic diagram of first time iterative decoding provided by the embodiments of the present application;

Fig. 3 is a kind of flow diagram of underwater visible light communication method provided by the embodiments of the present application;

Fig. 4 is the schematic diagram of the transmitting terminal of underwater visible light communication system provided by the embodiments of the present application;

Fig. 5 is a kind of schematic diagram of the lamps and lanterns comprising multiple LED lamps provided by the embodiments of the present application;

Fig. 6 is a kind of schematic diagram of underwater visible light communication system provided by the embodiments of the present application;

Fig. 7 is a kind of structural schematic diagram of underwater visible light communication device provided by the embodiments of the present application;

Fig. 8 is a kind of structural schematic diagram of underwater visible light communication device provided by the embodiments of the present application;

Fig. 9 is a kind of structural schematic diagram of underwater visible light communication system provided by the embodiments of the present application.

Specific embodiment

In order to realize the purpose of the application, the embodiment of the present application provides a kind of underwater visible light communication method, apparatus and is System, which comprises the letter that the receiving end of underwater visible light communication system is sent by multiple LED that SPAD receives transmitting terminal Number, wherein the signal that the multiple LED is sent is the transmitting terminal serioparallel exchange and signal processing executed to target data after Obtained multiplex coding signal carries out successive interference cancellation processing to the superposed signal for meeting Poisson distribution of SPAD output The corresponding detection signal of the multiple LED is obtained, and then parallel-serial conversion operation is executed to the corresponding detection signal of the multiple LED Obtain the target data, so as to improve underwater visible light communication system receiving end detection performance, effectively realization water The reliable communication of lower visible light communication system.

Technical scheme is clearly and completely retouched below with reference to the application specific embodiment and corresponding attached drawing It states.Obviously, the described embodiments are only a part but not all of the embodiments of the present application.Based in the application Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, It shall fall in the protection scope of this application.

Below in conjunction with attached drawing, the technical scheme provided by various embodiments of the present application will be described in detail.

Embodiment 1

Fig. 1 is a kind of flow diagram of underwater visible light communication method provided by the embodiments of the present application.The method is answered Used in receiving end, the method can be as follows.

Step 101: the letter sent by multiple Light-emitting diode LED that single-photon avalanche diode SPAD receives transmitting terminal Number.

Wherein, the signal that the multiple LED is sent is that the transmitting terminal executes at serioparallel exchange and signal target data The multiplex coding signal obtained after reason.

In the embodiment of the present application, the signal of multiple LED transmission of transmitting terminal is received by SPAD, comprising:

Subsurface communication link is constructed using SPAD, the SPAD receives the letter that the multiple LED of the transmitting terminal is sent Number.

Under water in long range visible light communication system, the visible light for carrying target data is believed through long-distance Underwater Optical After road decaying, the number of photons for reaching receiving end is seldom.

It is able to detect single-photon relative to traditional photodiode PD, SPAD, under water long range visible light communication In system, subsurface communication link is constructed using SPAD, can be realized the traffic level of tens of Mbps in several kilometer ranges.

In the embodiment of the present application, under water in visible light communication system, transmitting terminal carries out signal biography using the multiple LED Defeated, receiving end receives the signal that the multiple LED is sent using the SPAD.

Step 102: successive interference cancellation being carried out to the superposed signal for meeting Poisson distribution of SPAD output and is handled To the corresponding detection signal of the multiple LED.

Since the SPAD has Poisson characteristics, the SPAD receive signal that the multiple LED is sent it Afterwards, output meets the superposed signal of Poisson distribution.

In the embodiment of the present application, the successive interference cancellation processing includes successive ignition decoding operation, the successive ignition The m times decoding operate in decoding operate specifically includes:

According to following step, the corresponding detection signal of k-th of LED is determined:

It determines that k-th of LED is corresponding according to the kth input signal for inputting the signal estimator by signal estimator to estimate Count signal;

The corresponding estimation signal of k-th of LED is executed by kth deinterleaver and deinterleaves operation, is determined k-th The corresponding de-interleaved signal of LED, wherein the kth deinterleaver and in transmitting terminal friendship corresponding with k-th of LED It is corresponding to knit device;

Decoding operate is executed to the corresponding de-interleaved signal of k-th of LED by kth decoder, is determined described k-th The corresponding detection signal of LED and decoded signal, wherein the kth decoder in the transmitting terminal and k-th of LED Corresponding encoder is corresponding;

The operation that interweaves is executed to the corresponding decoded signal of k-th of LED by kth interleaver, and the behaviour that interweaves will be executed Signal after work inputs the signal estimator as+1 input signal of kth, wherein the kth interleaver in the hair Sending end interleaver corresponding with k-th of LED is identical.

In the embodiment of the present application, work as m=1, when k=1, the kth input signal is the superposed signal;

Work as m > 1, when k=1, the kth input signal is the N+1 input signal of determination in the m-1 time iterative decoding, In, N is the number of the multiple LED.

In the embodiment of the present application, determined by signal estimator according to the kth input signal for inputting the signal estimator The corresponding estimation signal of k-th of LED, comprising:

The signal estimator determines the corresponding estimation signal of k-th of LED by following formula:

Wherein, eESE(xk) indicate that the corresponding estimation signal of k-th of LED, y indicate the Poisson meter of the SPAD output Number, cpIndicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that k-th of LED is sent, h indicates Underwater Optical letter The channel parameter in road,Indicate the corresponding poisson noise of k-th of LED determined according to the kth input signal.

Wherein, the underwater signal parameter h is just to be distributed very much lognormal model and Monte Carlo numerical value by logarithm Emulate what MCNS was determined.

Specifically, the scattering of underwater optical channel and absorption coefficient are determined by Monte Carlo numerical simulation MCNS, water The turbulivity of lower optical channel is determined by logarithm just too distribution lognormal model.

Fig. 2 is the schematic diagram of first time iterative decoding provided by the embodiments of the present application.

As shown in Fig. 2, SPAD receives the signal of 3 LED transmission, and export the superposed signal for meeting Poisson distribution, institute Superposed signal is stated as the 1st input signal and inputs baseband signal estimator ESE, the baseband signal estimator ESE is according to 1st input signal determines the corresponding estimation signal of the 1st LED by following formula:

Wherein, eESE(x1) indicate that the corresponding estimation signal of the 1st LED, y indicate the Poisson meter of the SPAD output Number, cpIndicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that the 1st LED is sent, h indicates Underwater Optical letter The channel parameter in road,Indicate the 1st corresponding poisson noise of LED determined according to the 1st input signal.

For example, according to the 1st input signal, by other interference informations etc. except the corresponding estimation signal of the 1st LED Effect obtains the 1st corresponding poisson noise of LED

The corresponding estimation signal e of 1st LEDESE(x1) the 1st deinterleaver of input1st deinterleaverEstimation signal e corresponding to the 1st LEDESE(x1) deinterleaving operation is executed, determine the 1st corresponding solution of LED Interleaved signal lDEC(c1)。

Wherein, the 1st deinterleaverAnd in transmitting terminal interleaver Π corresponding with the 1st LED1Phase It is corresponding.

The corresponding de-interleaved signal l of 1st LEDDEC(c1) the 1st decoder DECs of input1, the 1st decoder DECs1De-interleaved signal l corresponding to the 1st LEDDEC(c1) decoding operate is executed, determine that the 1st LED is corresponding Detect signal u1(lb) and the corresponding decoded signal e of the 1st LEDDEC(c1)。

Wherein, the 1st decoder DECs1And it is opposite in transmitting terminal encoder corresponding with the 1st LED It answers.

The corresponding decoded signal e of 1st LEDDEC(c1) the 1st interleaver Π of input1, the 1st interleaver Π1To institute State the corresponding decoded signal e of the 1st LEDDEC(c1) operation that interweaves is executed, determine the signal l executed after interweavingESE(x1), and will The signal l executed after interweavingESE(x1) as the 2nd input signal input baseband signal estimator ESE.

The baseband signal estimator ESE determines that the 2nd LED is corresponding by following formula according to the 2nd input signal Estimation signal:

Wherein, eESE(x2) indicate that the corresponding estimation signal of the 2nd LED, y indicate the Poisson meter of the SPAD output Number, cpIndicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that the 2nd LED is sent, h indicates Underwater Optical letter The channel parameter in road,Indicate the 2nd corresponding poisson noise of LED determined according to the 2nd input signal.

The corresponding estimation signal e of 2nd LEDESE(x2) the 2nd deinterleaver of input2nd deinterleaverEstimation signal e corresponding to the 2nd LEDESE(x2) deinterleaving operation is executed, determine the 2nd corresponding solution of LED Interleaved signal lDEC(c2)。

Wherein, the 2nd deinterleaverAnd in transmitting terminal interleaver Π corresponding with the 2nd LED2Phase It is corresponding.

The corresponding de-interleaved signal l of 2nd LEDDEC(c2) the 2nd decoder DECs of input2, the 2nd decoder DECs2De-interleaved signal l corresponding to the 2nd LEDDEC(c2) decoding operate is executed, determine that the 2nd LED is corresponding Detect signal u2(lb) and the corresponding decoded signal e of the 2nd LEDDEC(c2)。

Wherein, the 2nd decoder DECs2And it is opposite in transmitting terminal encoder corresponding with the 2nd LED It answers.

The corresponding decoded signal e of 2nd LEDDEC(c2) the 2nd interleaver Π of input2, the 2nd interleaver Π2To institute State the corresponding decoded signal e of the 2nd LEDDEC(c2) operation that interweaves is executed, determine the signal l executed after interweavingESE(x2), and will The signal l executed after interweavingESE(x2) as the 3rd input signal input baseband signal estimator ESE.

The baseband signal estimator ESE determines that the 3rd LED is corresponding by following formula according to the 3rd input signal Estimation signal:

Wherein, eESE(x3) indicate that the corresponding estimation signal of the 3rd LED, y indicate the Poisson meter of the SPAD output Number, cpIndicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that the 3rd LED is sent, h indicates Underwater Optical letter The channel parameter in road,Indicate the 3rd corresponding poisson noise of LED determined according to the 3rd input signal.

The corresponding estimation signal e of 3rd LEDESE(x3) the 3rd deinterleaver of input3rd deinterleaverEstimation signal e corresponding to the 3rd LEDESE(x3) deinterleaving operation is executed, determine the 3rd corresponding solution of LED Interleaved signal lDEC(c3)。

Wherein, the 3rd deinterleaverAnd in transmitting terminal interleaver Π corresponding with the 3rd LED3Phase It is corresponding.

The corresponding de-interleaved signal l of 3rd LEDDEC(c3) the 3rd decoder DECs of input3, the 3rd decoder DECs3De-interleaved signal l corresponding to the 3rd LEDDEC(c3) decoding operate is executed, determine that the 3rd LED is corresponding Detect signal u3(lb) and the corresponding decoded signal e of 3 LEDDEC(c3)。

Wherein, the 3rd decoder DECs3And it is opposite in transmitting terminal encoder corresponding with the 3rd LED It answers.

The corresponding decoded signal e of 3rd LEDDEC(c3) the 3rd interleaver Π of input3, the 3rd interleaver Π3To institute State the corresponding decoded signal e of the 3rd LEDDEC(c3) operation that interweaves is executed, determine the signal l executed after interweavingESE(x3), and will The signal l executed after interweavingESE(x3) as the 4th input signal input baseband signal estimator ESE.

So far, first time iterative decoding is completed, in the secondary iterative decoding, has obtained the corresponding detection letter of 3 LED Number u1(lb)、u2(lb) and u3(lb)。

4th input signal is re-used as the 1st input signal, the 2nd iterative decoding operation is executed, updates The corresponding detection signal u of 3 LED1(lb)、u2(lb) and u3(lb)。

And so on, successive ignition decoding operation is carried out, after last time iterative decoding, obtains described 3 LED pairs The detection signal u answered1(lb)、u2(lb) and u3(lb)

Step 103: detection signal corresponding to the multiple LED executes parallel-serial conversion and operates to obtain the target data.

Parallel-serial conversion behaviour is executed for the corresponding detection signal of the multiple LED determined after successive ignition decoding operation Make, obtains the target data.

Still by taking above-mentioned Fig. 2 as an example, detection corresponding for 3 LED determined after last time iterative decoding is believed Number u1(lb)、u2(lb) and u3(lb) parallel-serial conversion operation is executed, obtain target data u.

Technical solution provided by the embodiments of the present application, the receiving end of underwater visible light communication system is received by SPAD to be sent The signal that multiple LED at end are sent, wherein the signal that the multiple LED is sent is that the transmitting terminal executes string to target data And the multiplex coding signal obtained later with signal processing operations is converted, the superposition for meeting Poisson distribution to SPAD output Signal carries out successive interference cancellation and handles to obtain the corresponding detection signal of the multiple LED, and then corresponding to the multiple LED Detection signal executes parallel-serial conversion and operates to obtain the target data, so as to improve the reception of underwater visible light communication system The detection performance at end effectively realizes the reliable communication of underwater visible light communication system.

Embodiment 2

Fig. 3 is a kind of flow diagram of underwater visible light communication method provided by the embodiments of the present application.The method is answered Used in transmitting terminal, the method can be as follows.

Step 301: receiving target data to be sent.

Step 302: serioparallel exchange being executed to the target data and operates determining multiple signals.

In the embodiment of the present application, serioparallel exchange operation is executed to the target data of single channel high-speed transfer, single channel high speed is passed The defeated target data is divided into the signal of multi-path low speed transmission.

Step 303: signal processing operations being executed to the multiple signals respectively and obtain multiplex coding signal.

In the embodiment of the present application, the signal processing operations include interleaving treatment, coded treatment and on-off keying OOK tune System processing.

Fig. 4 is a kind of schematic diagram of the transmitting terminal of underwater visible light communication system provided by the embodiments of the present application.

As shown in figure 4, the transmitting terminal of underwater visible light communication system receives target data u to be sent, to the target Data u executes serioparallel exchange operation, obtains 3 signal u1、u2And u3

Respectively to 3 signal u1、u2And u3Execute encoding operation, three signal c after being encoded1、c2And c3

Different interleavers is respectively adopted to three signal c after the coding1、c2And c3The operation that interweaves is executed, is handed over Three signal v after knitting1、v2And v3

It should be noted that the corresponding interleaver of each signal is different, and it is specific interleaver, it is described each for distinguishing Signal.

Respectively to three signal v after the intertexture1、v2And v3On-off keying OOK modulation operations are executed, three volumes are obtained Code signal s1、s2And s3

Step 304: by multiple LED with the multiplex coding signal same number by the multiplex coding signal to connecing Receiving end is sent.

In the embodiment of the present application, by multiple LED with the multiplex coding signal same number by the multiplex coding Signal is sent to receiving end, comprising:

By in single lamps and lanterns with multiple LED of the multiplex coding signal same number by the multiplex coding signal to Receiving end is sent.

Fig. 5 is a kind of schematic diagram of the lamps and lanterns comprising multiple LED lamps provided by the embodiments of the present application.

As shown in figure 5, include 5 LED lamps in single lamps and lanterns, it being capable of 5 signals of simultaneous transmission.

Still by taking above-mentioned Fig. 4 as an example, three encoded signals are transmitted to receiving end using the lamps and lanterns comprising 3 LED lamps s1、s2And s3

Technical solution provided by the embodiments of the present application, the transmitting terminal of underwater visible light communication system receive target to be sent Data execute serioparallel exchange to the target data and operate determining multiple signals, execute at signal respectively to the multiple signals Multiplex coding signal is obtained after reason operation, by multiple LED with the multiplex coding signal same number by the multichannel Encoded signal is sent to receiving end, improves the transmission rate of underwater visible light communication system, meanwhile, so that receiving end receives After the multiplex coding signal, it is able to carry out successive interference cancellation processing and parallel-serial conversion operation, obtains the number of targets According to, so as to improve underwater visible light communication system receiving end detection performance, effectively realize underwater visible light communication system The reliable communication of system.

Embodiment 3

Fig. 6 is a kind of schematic diagram of underwater visible light communication system provided by the embodiments of the present application.

As shown in fig. 6, the transmitting terminal of underwater visible light communication system receives target data u to be sent, to the target Data u executes serioparallel exchange operation, obtains 3 signal u1、u2And u3

Respectively to 3 signal u1、u2And u3Execute encoding operation, three signal c after being encoded1、c2And c3

Different interleavers is respectively adopted to three signal c after the coding1、c2And c3The operation that interweaves is executed, is handed over Three signal v after knitting1、v2And v3

Respectively to three signal v after the intertexture1、v2And v3On-off keying OOK modulation operations are executed, three volumes are obtained Code signal s1、s2And s3

Three encoded signal s are transmitted to receiving end using the lamps and lanterns comprising 3 LED lamps1、s2And s3

Subsurface communication link is constructed using SPAD, is sent by 3 LED that the SPAD receives the transmitting terminal Signal s1、s2And s3

The superposed signal for meeting Poisson distribution of SPAD output is handled using successive interference cancellation, obtains described 3 The corresponding detection signal of a LED, and then parallel-serial conversion is executed to the corresponding detection signal of 3 LED and operates to obtain the mesh Mark data u.

Embodiment 4

Fig. 7 is that one kind provided by the embodiments of the present application under water can be by the structural schematic diagram of optical communication apparatus.Device 700 is applied In receiving end, described device 700 includes: receiving unit 701, decoding unit 702 and converting unit 703, in which:

Receiving unit 701, for receiving multiple Light-emitting diode LED of transmitting terminal by single-photon avalanche diode SPAD The signal of transmission, wherein the signal that the multiple LED is sent is that the transmitting terminal executes serioparallel exchange and signal to target data The multiplex coding signal obtained after processing;

Decoding unit 702, the superposed signal for meeting Poisson distribution for exporting to the SPAD carry out stepwise derivation and disappear Except processing obtains the corresponding detection signal of the multiple LED;

Converting unit 703 operates to obtain the mesh for executing parallel-serial conversion to the corresponding detection signal of the multiple LED Mark data.

Optionally, the successive interference cancellation processing includes successive ignition decoding operation, wherein the successive ignition decoding The m times decoding operate in operation specifically includes:

According to following step, the corresponding detection signal of k-th of LED is determined:

It determines that k-th of LED is corresponding according to the kth input signal for inputting the signal estimator by signal estimator to estimate Count signal;

The corresponding estimation signal of k-th of LED is executed by kth deinterleaver and deinterleaves operation, is determined k-th The corresponding de-interleaved signal of LED, wherein the kth deinterleaver and in transmitting terminal friendship corresponding with k-th of LED It is corresponding to knit device;

Decoding operate is executed to the corresponding de-interleaved signal of k-th of LED by kth decoder, is determined described k-th The corresponding detection signal of LED and decoded signal, wherein the kth decoder in the transmitting terminal and k-th of LED Corresponding encoder is corresponding;

The operation that interweaves is executed to the corresponding decoded signal of k-th of LED by kth interleaver, and the behaviour that interweaves will be executed Signal after work inputs the signal estimator as+1 input signal of kth, wherein the kth interleaver in the hair Sending end interleaver corresponding with k-th of LED is identical.

Optionally, work as m=1, when k=1, the kth input signal is the superposed signal;

Work as m > 1, when k=1, the kth input signal is the N+1 input signal of determination in the m-1 time iterative decoding, In, N is the number of the multiple LED.

Optionally, k-th of LED is determined according to the kth input signal for inputting the signal estimator by signal estimator Corresponding estimation signal, comprising:

The signal estimator determines the corresponding estimation signal of k-th of LED by following formula:

Wherein, eESE(xk) indicate that the corresponding estimation signal of k-th of LED, y indicate the Poisson meter of the SPAD output Number, cpIndicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that k-th of LED is sent, h indicates Underwater Optical letter The channel parameter in road,Indicate the corresponding poisson noise of k-th of LED determined according to the kth input signal.

Optionally, the channel parameter h of the underwater optical channel is just to be distributed very much lognormal model and illiteracy by logarithm What special Carlow numerical simulation MCNS was determined.

According to a kind of underwater visible light communication device applied in receiving end, receiving unit is used to receive by SPAD and send The signal that multiple LED at end are sent, wherein the signal that the multiple LED is sent is that the transmitting terminal executes string to target data And convert the multiplex coding signal obtained later with signal processing;What decoding unit was used to export the SPAD meets Poisson point The superposed signal of cloth carries out successive interference cancellation and handles to obtain the corresponding detection signal of the multiple LED;Converting unit for pair The corresponding detection signal of the multiple LED executes parallel-serial conversion and operates to obtain the target data, under water may be used so as to improve The detection performance of the receiving end of light-exposed communication system effectively realizes the reliable communication of underwater visible light communication system.

Embodiment 5

Fig. 8 is that one kind provided by the embodiments of the present application under water can be by the structural schematic diagram of optical communication apparatus.Device 800 is applied In transmitting terminal, described device 800 includes: receiving unit 801, converting unit 802, signal processing unit 803 and transmission unit 804, in which:

Receiving unit 801, for receiving target data to be sent;

Converting unit 802 operates determining multiple signals for executing serioparallel exchange to the target data;

Signal processing unit 803 obtains multiplex coding signal for executing signal processing operations to the multiple signals;

Transmission unit 804, for by multiple LED with the multiplex coding signal same number by the multiplex coding Signal is sent to receiving end.

Optionally, the signal processing operations include interleaving treatment, coded treatment and on-off keying OOK modulation treatment.

Optionally, by multiple LED with the multiplex coding signal same number by the multiplex coding signal to connecing Receiving end is sent, comprising:

By in single lamps and lanterns with multiple LED of the multiplex coding signal same number by the multiplex coding signal to Receiving end is sent.

According to a kind of underwater visible light communication device applied in transmitting terminal, receiving unit is for receiving target to be sent Data;Converting unit, which is used to execute serioparallel exchange to the target data, determines multiple signals;Signal processing unit is used for institute It states multiple signals execution signal processing and obtains multiplex coding signal;Transmission unit is used for by identical as the multiplex coding signal Multiple LED of number send the multiplex coding signal to receiving end, improve the transmission speed of underwater visible light communication system Rate, meanwhile, so that being able to carry out successive interference cancellation processing after receiving end receives the multiplex coding signal and and going here and there Conversion operation obtains the target data, so as to improve underwater visible light communication system receiving end detection performance, have Effect realizes the reliable communication of underwater visible light communication system.

Embodiment 6

Fig. 9 is a kind of structural schematic diagram of underwater visible light communication system provided by the embodiments of the present application.System 900 is wrapped Include: apply receiving end a kind of underwater visible light communication device 700 and apply a kind of underwater visible light communication in transmitting terminal Device 800.

In the 1990s, the improvement of a technology can be distinguished clearly be on hardware improvement (for example, Improvement to circuit structures such as diode, transistor, switches) or software on improvement (improvement for method flow).So And with the development of technology, the improvement of current many method flows can be considered as directly improving for hardware circuit. Designer nearly all obtains corresponding hardware circuit by the way that improved method flow to be programmed into hardware circuit.Cause This, it cannot be said that the improvement of a method flow cannot be realized with hardware entities module.For example, programmable logic device (Programmable Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate Array, FPGA)) it is exactly such a integrated circuit, logic function determines device programming by user.By designer Voluntarily programming comes a digital display circuit " integrated " on a piece of PLD, designs and makes without asking chip maker Dedicated IC chip.Moreover, nowadays, substitution manually makes IC chip, this programming is also used instead mostly " is patrolled Volume compiler (logic compiler) " software realizes that software compiler used is similar when it writes with program development, And the source code before compiling also write by handy specific programming language, this is referred to as hardware description language (Hardware Description Language, HDL), and HDL is also not only a kind of, but there are many kind, such as ABEL (Advanced Boolean Expression Language)、AHDL(Altera Hardware Description Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL (Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby Hardware Description Language) etc., VHDL (Very-High-Speed is most generally used at present Integrated Circuit Hardware Description Language) and Verilog.Those skilled in the art also answer This understands, it is only necessary to method flow slightly programming in logic and is programmed into integrated circuit with above-mentioned several hardware description languages, The hardware circuit for realizing the logical method process can be readily available.

Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing The computer for the computer readable program code (such as software or firmware) that device and storage can be executed by (micro-) processor can Read medium, logic gate, switch, specific integrated circuit (Application Specific Integrated Circuit, ASIC), the form of programmable logic controller (PLC) and insertion microcontroller, the example of controller includes but is not limited to following microcontroller Device: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320 are deposited Memory controller is also implemented as a part of the control logic of memory.It is also known in the art that in addition to Pure computer readable program code mode is realized other than controller, can be made completely by the way that method and step is carried out programming in logic Controller is obtained to come in fact in the form of logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and insertion microcontroller etc. Existing identical function.Therefore this controller is considered a kind of hardware component, and to including for realizing various in it The device of function can also be considered as the structure in hardware component.Or even, it can will be regarded for realizing the device of various functions For either the software module of implementation method can be the structure in hardware component again.

System, device, module or the unit that above-described embodiment illustrates can specifically realize by computer chip or entity, Or it is realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used Think personal computer, laptop computer, cellular phone, camera phone, smart phone, personal digital assistant, media play It is any in device, navigation equipment, electronic mail equipment, game console, tablet computer, wearable device or these equipment The combination of equipment.

For convenience of description, it is divided into various units when description apparatus above with function to describe respectively.Certainly, implementing this The function of each unit can be realized in the same or multiple software and or hardware when application.

It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

In a typical configuration, calculating equipment includes one or more processors (CPU), input/output interface, net Network interface and memory.

Memory may include the non-volatile memory in computer-readable medium, random access memory (RAM) and/or The forms such as Nonvolatile memory, such as read-only memory (ROM) or flash memory (flash RAM).Memory is computer-readable medium Example.

Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method Or technology come realize information store.Information can be computer readable instructions, data structure, the module of program or other data. The example of the storage medium of computer includes, but are not limited to phase change memory (PRAM), static random access memory (SRAM), moves State random access memory (DRAM), other kinds of random access memory (RAM), read-only memory (ROM), electric erasable Programmable read only memory (EEPROM), flash memory or other memory techniques, read-only disc read only memory (CD-ROM) (CD-ROM), Digital versatile disc (DVD) or other optical storage, magnetic cassettes, tape magnetic disk storage or other magnetic storage devices Or any other non-transmission medium, can be used for storage can be accessed by a computing device information.As defined in this article, it calculates Machine readable medium does not include temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.

It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability It include so that the process, method, commodity or the equipment that include a series of elements not only include those elements, but also to wrap Include other elements that are not explicitly listed, or further include for this process, method, commodity or equipment intrinsic want Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want There is also other identical elements in the process, method of element, commodity or equipment.

The application can describe in the general context of computer-executable instructions executed by a computer, such as program Module.Generally, program module includes routines performing specific tasks or implementing specific abstract data types, programs, objects, group Part, data structure etc..The application can also be practiced in a distributed computing environment, in these distributed computing environments, by Task is executed by the connected remote processing devices of communication network.In a distributed computing environment, program module can be with In the local and remote computer storage media including storage equipment.

All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for system reality For applying example, since it is substantially similar to the method embodiment, so being described relatively simple, related place is referring to embodiment of the method Part explanation.

The above description is only an example of the present application, is not intended to limit this application.For those skilled in the art For, various changes and changes are possible in this application.All any modifications made within the spirit and principles of the present application are equal Replacement, improvement etc., should be included within the scope of the claims of this application.

Claims (8)

1. a kind of underwater visible light communication method, which is characterized in that the method is applied in receiving end, which comprises
The signal sent by multiple Light-emitting diode LED that single-photon avalanche diode SPAD receives transmitting terminal, wherein described The signal that multiple LED are sent is that the transmitting terminal is more to obtaining after target data execution serioparallel exchange and signal processing operations Road encoded signal;
Successive interference cancellation is carried out to the superposed signal for meeting Poisson distribution of SPAD output to handle to obtain the multiple LED Corresponding detection signal;
Detection signal corresponding to the multiple LED executes parallel-serial conversion and operates to obtain the target data;
Wherein,
The successive interference cancellation processing includes successive ignition decoding operation, wherein the m in the successive ignition decoding operation Secondary decoding operate specifically includes:
According to following step, the corresponding detection signal of k-th of LED is determined:
Determine that the corresponding estimation of k-th of LED is believed according to the kth input signal for inputting the signal estimator by signal estimator Number;
By kth deinterleaver to the corresponding estimation signal of k-th of LED execute deinterleave operation, determine k-th LED pairs The de-interleaved signal answered, wherein the kth deinterleaver and in transmitting terminal interleaver phase corresponding with k-th of LED It is corresponding;
Decoding operate is executed to the corresponding de-interleaved signal of k-th of LED by kth decoder, determines k-th of LED Corresponding detection signal and decoded signal, wherein the kth decoder is corresponding with k-th of LED in the transmitting terminal Encoder it is corresponding;
The operation that interweaves is executed to the corresponding decoded signal of k-th of LED by kth interleaver, and the operation that interweaves will be executed Signal afterwards inputs the signal estimator as+1 input signal of kth, wherein the kth interleaver in the transmitting terminal Interleaver corresponding with k-th of LED is identical.
2. the method as described in claim 1, which is characterized in that
Work as m=1, when k=1, the kth input signal is the superposed signal;
Work as m > 1, when k=1, the kth input signal is the N+1 input signal of determination in the m-1 time iterative decoding, wherein N For the number of the multiple LED.
3. the method as described in claim 1, which is characterized in that
Determine that the corresponding estimation of k-th of LED is believed according to the kth input signal for inputting the signal estimator by signal estimator Number, comprising:
The signal estimator determines the corresponding estimation signal of k-th of LED by following formula:
Wherein, eESE(xk) indicate that the corresponding estimation signal of k-th of LED, y indicate that the Poisson of the SPAD output counts, cp Indicate the Photoelectric Detection sensitivity of the SPAD, nsIndicate the number of photons that k-th of LED is sent, h indicates underwater optical channel Channel parameter,Indicate the corresponding poisson noise of k-th of LED determined according to the kth input signal.
4. method as claimed in claim 3, which is characterized in that
The channel parameter h of the underwater optical channel is just to be distributed very much lognormal model and Monte Carlo numerical value by logarithm Emulate what MCNS was determined.
5. a kind of underwater visible light communication method, which is characterized in that the method is applied in transmitting terminal, which comprises
Receive target data to be sent;
Serioparallel exchange is executed to the target data and operates determining multiple signals;
Signal processing operations are executed to the multiple signals and obtain multiplex coding signal, and by with the multiplex coding signal Multiple LED of same number send the multiplex coding signal to receiving end;
The signal processing operations include interleaving treatment, coded treatment and on-off keying OOK modulation treatment;
The multiplex coding signal is sent to receiving end by multiple LED with the multiplex coding signal same number, packet It includes:
By in single lamps and lanterns with multiple LED of the multiplex coding signal same number by the multiplex coding signal to reception End is sent;
Wherein,
The receiving end is using the underwater visible light communication method as described in one of claim 1-4.
6. a kind of underwater visible light communication device, which is characterized in that described device is applied in receiving end, and described device includes: to connect Receive unit, decoding unit and converting unit, in which:
Receiving unit, what multiple Light-emitting diode LED for receiving transmitting terminal by single-photon avalanche diode SPAD were sent Signal, wherein the signal that the multiple LED is sent is that the transmitting terminal executes serioparallel exchange to target data and signal processing is grasped The multiplex coding signal obtained after making;
Decoding unit, the superposed signal for meeting Poisson distribution for exporting to the SPAD carry out successive interference cancellation and handle To the corresponding detection signal of the multiple LED;
Converting unit operates to obtain the target data for executing parallel-serial conversion to the corresponding detection signal of the multiple LED;
Wherein,
The receiving end is using the underwater visible light communication method as described in one of claim 1-4.
7. a kind of underwater visible light communication device, which is characterized in that the method is applied in transmitting terminal, and described device includes: to connect Receive unit, converting unit, signal processing unit and transmission unit, in which:
Receiving unit, for receiving target data to be sent;
Converting unit operates determining multiple signals for executing serioparallel exchange to the target data;
Signal processing unit obtains multiplex coding signal for executing signal processing operations to the multiple signals;
Transmission unit, for by multiple LED with the multiplex coding signal same number by the multiplex coding signal to Receiving end is sent;
Wherein,
The receiving end is using the underwater visible light communication method as described in one of claim 1-4.
8. a kind of underwater visible light communication system, which is characterized in that the system comprises: it applies in transmitting terminal such as claim Underwater visible light communication device described in 7 and apply underwater visible light communication dress as claimed in claim 6 in receiving end It sets.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103684598A (en) * 2014-01-06 2014-03-26 中国人民解放军信息工程大学 Visible light communication system
CN105450577A (en) * 2015-12-03 2016-03-30 东南大学 Filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias
CN105634619A (en) * 2016-01-25 2016-06-01 中国人民解放军信息工程大学 Receiving end equipment and system for underwater communication
CN105656554A (en) * 2016-01-28 2016-06-08 中国人民解放军信息工程大学 Visible light communication system and method
CN105680941A (en) * 2016-02-26 2016-06-15 中国科学技术大学 Underwater LED (Light-Emitting Diode) long distance communication system based on visible light
CN105812122A (en) * 2016-03-08 2016-07-27 中国人民解放军军械工程学院 Method for establishing correlativity of Hamming weight and optical radiation of cipher chip
CN105933062A (en) * 2016-06-24 2016-09-07 中国人民解放军信息工程大学 Remote underwater visible light communication method and system
CN106330312A (en) * 2016-08-31 2017-01-11 中国人民解放军信息工程大学 Underwater visible light communication method, device and system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103684598A (en) * 2014-01-06 2014-03-26 中国人民解放军信息工程大学 Visible light communication system
CN105450577A (en) * 2015-12-03 2016-03-30 东南大学 Filter bank multi-carrier visible light communication system and method based on DC (Direct Current) bias
CN105634619A (en) * 2016-01-25 2016-06-01 中国人民解放军信息工程大学 Receiving end equipment and system for underwater communication
CN105656554A (en) * 2016-01-28 2016-06-08 中国人民解放军信息工程大学 Visible light communication system and method
CN105680941A (en) * 2016-02-26 2016-06-15 中国科学技术大学 Underwater LED (Light-Emitting Diode) long distance communication system based on visible light
CN105812122A (en) * 2016-03-08 2016-07-27 中国人民解放军军械工程学院 Method for establishing correlativity of Hamming weight and optical radiation of cipher chip
CN105933062A (en) * 2016-06-24 2016-09-07 中国人民解放军信息工程大学 Remote underwater visible light communication method and system
CN106330312A (en) * 2016-08-31 2017-01-11 中国人民解放军信息工程大学 Underwater visible light communication method, device and system

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