CN107508665B - High-dimensional chaotic laser secret communication system - Google Patents
High-dimensional chaotic laser secret communication system Download PDFInfo
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- CN107508665B CN107508665B CN201710991413.4A CN201710991413A CN107508665B CN 107508665 B CN107508665 B CN 107508665B CN 201710991413 A CN201710991413 A CN 201710991413A CN 107508665 B CN107508665 B CN 107508665B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/001—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using chaotic signals
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/08—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using semiconductor devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/506—Multiwavelength transmitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
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Abstract
The invention discloses a high-dimensional chaotic laser secure communication system which comprises a transmitting end and a receiving end, wherein the transmitting end comprises a first tunable laser, a second tunable laser, a first Mach-Zehnder modulator, a first radio-frequency amplifier, a first photoelectric detector, a first optical delay line and a first optical fiber coupler; the receiving end comprises a third tunable laser, a second Mach-Zehnder modulator, a second optical fiber coupler, a second optical delay line, a second radio frequency amplifier, a second photoelectric detector, a third photoelectric detector, a fourth photoelectric detector and an adder. The invention uses the tunable laser to generate chaotic carrier waves and load information, and greatly improves the difficulty of information cracking under the condition that a third party does not know the wavelength by controlling the switching and matching of the wavelength of the laser, thereby having important significance for enterprises and departments with confidential requirements, in particular to the field of national defense information security.
Description
Technical Field
The invention belongs to the technical field of secret communication, and particularly relates to a high-dimensional chaotic laser secret communication system.
Background
Information is an important strategic resource for social development, and the development of modern communication technology rapidly changes the traditional production mode, business mode and life mode. The communication is as small as private communication of each household and as large as national military communication, and the receiving and sending of information are ubiquitous. However, with the continuous development and rapid popularization of information technologies represented by computer technologies and network communication technologies, the characteristics of internationalization, socialization, openness and personalization of network communication determine that it provides information sharing for people, brings high efficiency, high benefit and high quality life to people, and puts shadows of communication security problems. In recent years, with the development of cryptography and the improvement of computer computing power, the traditional public key encryption system is threatened. For the existing optical fiber communication system, it is possible to obtain the optical signal in the optical fiber link by a certain means and then decrypt the optical signal to steal the signal in the optical fiber channel. Therefore, it is important and urgent to find a more secure and practical encryption method for optical fiber communication systems.
Since the chaos phenomenon was discovered, there has been no break in the research and exploration of chaos. In recent years, chaotic synchronization and its application in secure communication have attracted extensive research interest of domestic and foreign scholars. Chaotic secure communication is a hardware encryption technology based on a physical layer, and the chaotic secure communication realizes synchronization by utilizing chaotic transceivers with consistent structures and parameters to generate the same chaotic carriers. The information to be transmitted is hidden in a long-term unpredictable chaotic carrier wave generated by a transmitter and enters a transmission channel for secret transmission. At the receiving end, the receiver utilizes chaotic synchronization to realize information decryption. Structural differences or parameter mismatches lead to reduced quality of recovered carriers, and even chaotic synchronization cannot be realized, so that correct reception of signals cannot be realized. The chaotic communication guarantees the safety of the communication process and the confidentiality of information from two aspects of the carrier concealment and the communication mechanism.
At present, the dimension of the confidentiality of the chaotic communication system is mainly reflected in the matching of the parameters of the device at the receiving end and the transmitting end, but the encryption on the hardware of the device is static for a period of time, so that the stealing of information is still possible. Especially, today with the rapid development of information technology, there is still room for improving the security and safety of chaotic secret communication systems.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention aims to provide a high-dimensional chaotic laser secret communication system, which overcomes the problems in the security of the conventional chaotic communication system and improves the security performance of the system.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a high-dimensional chaotic laser secret communication system comprises a transmitting end and a receiving end, wherein the transmitting end comprises a first tunable laser, a second tunable laser, a first Mach-Zehnder modulator, a first radio frequency amplifier, a first photoelectric detector, a first optical delay line and a first optical fiber coupler; the receiving end comprises a third tunable laser, a second Mach-Zehnder modulator, a second optical fiber coupler, a second optical delay line, a second radio frequency amplifier, a second photoelectric detector, a third photoelectric detector, a fourth photoelectric detector and an adder; the first tunable laser generates an optical signal carrying information and injects the optical signal into a first input end of the first optical fiber coupler, the second tunable laser generates a chaotic carrier signal, the signal is injected into a second input end of the first optical fiber coupler through the first Mach-Zehnder modulator, a first output end of the first optical fiber coupler is connected with an input end of the second coupler through an optical fiber transmission channel, and a second output end of the first optical fiber coupler is connected with a feedback electrode of the first Mach-Zehnder modulator through a first optical delay line, a first photoelectric detector and a first radio frequency amplifier in sequence; the first output end of the second optical fiber coupler is connected with the first input end of the adder through the second photoelectric detector, the third tunable laser generates chaotic carrier signals, the chaotic carrier signals are sequentially connected with the second input end of the adder through the second Mach-Zehnder modulator and the third photoelectric detector, the second output end of the second optical fiber coupler is sequentially connected with the feedback electrode of the second Mach-Zehnder modulator through the second optical delay line, the fourth photoelectric detector and the second radio frequency amplifier, and the adder performs subtraction operation on the two paths of input signals and outputs information signals.
Further, parameters of devices corresponding to the transmitting end and the receiving end are completely the same, that is, parameters of the second tunable laser and the third tunable laser are the same, parameters of the first mach-zehnder modulator and the second mach-zehnder modulator are the same, parameters of the first photoelectric detector and the fourth photoelectric detector are the same, and parameters of the first radio-frequency amplifier and the second radio-frequency amplifier are the same.
Further, the second photodetector has the same parameters as the third photodetector.
Furthermore, the time delay of the chaotic carrier generated by the second tunable laser is the same as that of the chaotic carrier generated by the third tunable laser.
Further, the lengths of the optical fibers between the first tunable laser and the first optical fiber coupler are the same as those between the second tunable laser and the first optical fiber coupler.
Further, the first tunable laser and the second tunable laser switch the wavelength at the same time every Δ T time and switch to the same wavelength, the wavelength switching sequence and the switching time interval of the third tunable laser are the same as those of the first tunable laser and the second tunable laser, but the wavelength switching of the third tunable laser has a delay T relative to the first tunable laser and the second tunable laser, and T is the transmission time of the optical signal from the transmitting end to the receiving end.
Adopt the beneficial effect that above-mentioned technical scheme brought:
the invention uses the tunable laser to generate the chaotic carrier and load information in the chaotic communication system, and improves the difficulty of information cracking under the condition that a third party does not know the wavelength by controlling the switching and matching of the wavelength of the laser. Because the time, interval, wavelength sequence and the like of wavelength switching of the tunable laser are all variable, and the change of the wavelength is dynamic and real-time, the difficulty of information decryption is greatly improved, and the safety of a secret communication system is improved.
Drawings
FIG. 1 is a block diagram of the system architecture of the present invention;
FIG. 2 is a timing diagram of the emission signals of 3 tunable lasers in the present invention;
fig. 3 is a circuit diagram of a tunable laser control circuit in the present invention.
Description of reference numerals: 1. a first tunable laser; 2. a second tunable laser; 3. a first Mach-Zehnder modulator; 4. a first radio frequency amplifier; 5. a first photodetector; 6. a first light delay line; 7. a first fiber coupler; 8. a second fiber coupler; 9. a second photodetector; 10. an adder; 11. a third photodetector; 12. a second Mach-Zehnder modulator; 13. a third tunable laser; 14. a second radio frequency amplifier; 15. a fourth photodetector; 16. a second light delay line.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings.
A high-dimensional chaotic laser secret communication system is shown in figure 1 and comprises a transmitting end and a receiving end, wherein the transmitting end comprises a first tunable laser 1, a second tunable laser 2, a first Mach-Zehnder modulator 3, a first radio-frequency amplifier 4, a first photoelectric detector 5, a first optical delay line 6 and a first optical fiber coupler 7; the receiving end comprises a third tunable laser 13, a second Mach-Zehnder modulator 12, a second optical fiber coupler 8, a second optical delay line 16, a second radio frequency amplifier 14, a second photoelectric detector 9, a third photoelectric detector 11, a fourth photoelectric detector 15 and an adder 10.
In the invention, a first tunable laser is used for emitting an optical signal carrying information; the second tunable laser and the third tunable laser are used for generating chaotic carriers and providing energy for the chaotic power process; the Mach-Zehnder modulator is a core device forming chaotic dynamics, and optical signals of the modulator are converted into electric signals and then fed back to electrodes of the modulator to generate chaos; the photoelectric detector is used for converting the optical signal into an electric signal; the radio frequency amplifier is used for driving the electrode voltage of the Mach-Zehnder modulator; the adder is used for performing addition and subtraction operation on the two paths of signals; the optical delay line contributes to the generation of chaos.
In this embodiment, parameters of devices corresponding to the transmitting end and the receiving end are completely the same, that is, parameters of the second tunable laser and the third tunable laser are the same, parameters of the first mach-zehnder modulator and the second mach-zehnder modulator are the same, parameters of the first photoelectric detector and the fourth photoelectric detector are the same, and parameters of the first radio-frequency amplifier and the second radio-frequency amplifier are the same. The second photodetector has the same parameters as the third photodetector. The time delay of the chaotic carrier generated by the second tunable laser is the same as that of the chaotic carrier generated by the third tunable laser. The first tunable laser and the second tunable laser are respectively the same as the optical fiber length between the first optical fiber coupler.
With reference to fig. 1, the information loading and demodulation process of the whole chaotic laser secure communication system is as follows:
at the transmitting end, after two paths of optical signals pass through the first optical fiber coupler, one part of the two paths of optical signals are converted into electric signals through the first photoelectric detector and act on the electrode of the first Mach-Zehnder modulator, so that laser chaos is generated through photoelectric feedback, and the other part of the two paths of optical signals are transmitted to the receiving end through the optical fiber transmission channel. Similarly, at the receiving end, after passing through the second optical fiber coupler, a part of the optical signal is converted into an electrical signal by the second photodetector and then reaches the adder, and another part of the optical signal is converted into an electrical signal by the fourth photodetector and acts on the electrode of the second mach-zehnder modulator. Because the parameters of the laser, the modulator, the photoelectric detector, the radio frequency signal amplifier and other devices at the transmitting end and the receiving end are very similar, the optical signal transmitted by the second tunable laser at the receiving end generates a chaotic signal which is the same as that of the transmitting end after passing through the second Mach-Zehnder modulator, and the chaotic signal is converted into an electric signal by the third photoelectric detector and then reaches the adder. It is worth noting that two paths of signals passing through the first optical fiber coupler at the transmitting end are fed back to the first Mach-Zehnder modulator, at this time, the optical signals passing through the modulator and the optical signals carrying information pass through the optical fiber transmission channel and reach the adder, the other path of signals pass through the optical fiber transmission channel and are fed back to the second Mach-Zehnder modulator at the receiving end, and at this time, the optical signals passing through the receiving end of the modulator also reach the adder. Although the transmission of light in a channel needs a certain time, the chaotic signal of a receiving end has a delay compared with that of a transmitting end, but the chaotic signal of the transmitting end also passes through an optical fiber transmission channel after being formed, so that chaotic carriers of signals reaching the adder at the same time are the same, and different signals from the transmitting end are loaded with information, so that the information can be demodulated by subtracting the two signals through the adder.
In order to improve the security of the system, the invention introduces the wavelength as a dimension into the chaotic laser communication system. In general, the detection efficiency of the photoelectric detector is sensitive to the wavelength, that is, the intensity of signals with different wavelengths passing through the photoelectric detector is different, so that the demodulation complexity is improved, and the safety of the system is improved. Fig. 2 is a timing diagram of signals emitted by three tunable lasers (TL1, TL2, TL3) at different wavelengths, which will be analyzed in detail below.
As shown in FIG. 2, assuming a signal transmission rate of 1Gb/s and a wavelength switching interval of 1s for the tunable laser, 10 transmissions will be made for each wavelength9And (4) a bit. If the wavelength tuning range of the tunable laser is 20nm and the wavelength switching interval is 1nm, the tunable laser corresponds to 20 switchable wavelengths λ1-λ20. During the switching process, from λ1Switching to λ2From λ2Switching to λ3Up to lambda20From λ20Switching to λ1And the steps are circulated in sequence. In the optical fiber channel, the wavelength of the information signal and the wavelength of the chaotic signal must be kept consistent, otherwise, a third party can filter the information signal by a filter easily, and the safety of the system is threatened. Therefore, in the present invention, in order to ensure that the wavelengths of the information signal and the chaotic signal in the optical fiber transmission channel are consistent, the first tunable laser and the second tunable laser should simultaneously switch the wavelengths and the wavelength switching sequences are consistent. Besides, the distances from the first tunable laser and the second tunable laser to the first fiber coupler should be controlled to be consistent. At the receiving end, because the time is needed for the light to pass through the optical fiber channel, the receiving end and the transmitting end generate the same chaotic dynamics and have time delay, and the time delay is the time for the light to be transmitted in the optical fiber channel. In this embodiment, if the optical fiber transmission channel is taken as 30km, the delay T is 0.1 ms. This also means that the wavelength switching of the third tunable laser at the receiving end should also have a delay of 0.1ms with respect to the first and second tunable lasers. Naturally, the wavelength switching sequence of the third tunable laser should be the same as the first and second tunable lasers. Since the time T is also required for the signal at the transmitting end to pass through the optical fiber channel, the wavelengths of the two paths of signals simultaneously reaching the photoelectric detectors on the left and right sides of the adder are the same, the electric signal intensities of the two paths of chaotic signals passing through the photoelectric detectors are also the same, and the information signal can be successfully demodulated.
More intuitivelyLet the wavelength of a certain bit signal emitted by the first tunable laser be λ1The time of transmission is t1The time of signal transmission to the adder is delta t1Then the time when the bit signal arrives at the adder is t1+Δt1. If the time delay of the third tunable laser for switching the wavelength is T, then at T1At + T, the wavelength of the signal emitted by the third tunable laser is also λ1Let the time from the third tunable laser to the adder be Δ t2The time when the signal emitted by the third tunable laser reaches the adder is t1+T+Δt2. Due to T + Deltat2＝Δt1The wavelengths of the signals simultaneously reaching the photodetectors on both sides of the adder are the same.
If a third party tries to steal information, but does not know the wavelength switching interval and sequence of the tunable laser of the transmitting end, the signal wavelengths of the receiving end passing through the photoelectric detectors on the two sides of the adder at the same time are likely to be different, and at the moment, the chaotic signals passing through the photoelectric detectors are different in intensity, so that the original information signal cannot be recovered after subtraction of the adder.
Fig. 3 shows the control circuits of the first, second and third tunable lasers, the main part of which controls 3 lasers (TL1, TL2, TL3) simultaneously, and is responsible for controlling the switching of the wavelengths. In practical application, considering the positions of the control circuit and the three lasers, a certain time is required for transmitting the electrical signal to the lasers, but it is finally ensured that the first tunable laser and the second tunable laser receive the electrical signal of the circuit simultaneously, the third tunable laser has a time delay relative to the time when the first tunable laser and the second tunable laser receive the electrical signal, and the time of the time delay is determined by the time of transmitting the light in the channel. There should also be a delay circuit behind the main part of the circuit, the specific location and time of the delay being determined by the specific situation.
The embodiments are only for illustrating the technical idea of the present invention, and the technical idea of the present invention is not limited thereto, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the scope of the present invention.
Claims (3)
1. A high-dimensional chaotic laser secret communication system comprises a transmitting end and a receiving end, and is characterized in that: the transmitting end comprises a first tunable laser, a second tunable laser, a first Mach-Zehnder modulator, a first radio frequency amplifier, a first photoelectric detector, a first optical delay line and a first optical fiber coupler; the receiving end comprises a third tunable laser, a second Mach-Zehnder modulator, a second optical fiber coupler, a second optical delay line, a second radio frequency amplifier, a second photoelectric detector, a third photoelectric detector, a fourth photoelectric detector and an adder; the first tunable laser generates an optical signal carrying information and injects the optical signal into a first input end of the first optical fiber coupler, the second tunable laser generates a chaotic carrier signal, the signal is injected into a second input end of the first optical fiber coupler through the first Mach-Zehnder modulator, a first output end of the first optical fiber coupler is connected with an input end of the second coupler through an optical fiber transmission channel, and a second output end of the first optical fiber coupler is connected with a feedback electrode of the first Mach-Zehnder modulator through a first optical delay line, a first photoelectric detector and a first radio frequency amplifier in sequence; the first output end of the second optical fiber coupler is connected with the first input end of the adder through a second photoelectric detector, the third tunable laser generates chaotic carrier signals, the chaotic carrier signals are sequentially connected with the second input end of the adder through a second Mach-Zehnder modulator and a third photoelectric detector, the second output end of the second optical fiber coupler is sequentially connected with the feedback electrode of the second Mach-Zehnder modulator through a second optical delay line, a fourth photoelectric detector and a second radio frequency amplifier, and the adder performs subtraction operation on the two paths of input signals and outputs information signals; the parameters of the devices corresponding to the transmitting end and the receiving end are completely the same, namely the parameters of the second tunable laser and the third tunable laser are the same, the parameters of the first Mach-Zehnder modulator and the second Mach-Zehnder modulator are the same, the parameters of the first photoelectric detector and the fourth photoelectric detector are the same, and the parameters of the first radio frequency amplifier and the second radio frequency amplifier are the same; the parameters of the second photoelectric detector and the third photoelectric detector are the same; the time delay of the chaotic carrier generated by the second tunable laser is the same as that of the chaotic carrier generated by the third tunable laser.
2. The high-dimensional chaotic laser secure communication system according to claim 1, characterized in that: the first tunable laser and the second tunable laser are respectively the same as the optical fiber length between the first optical fiber coupler.
3. The high-dimensional chaotic laser secure communication system according to claim 1, characterized in that: the wavelength of the third tunable laser is switched by a delay T relative to the first tunable laser and the second tunable laser, and the T is the transmission time of the optical signal from the transmitting end to the receiving end.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624365A (en) * | 2012-02-24 | 2012-08-01 | 西南交通大学 | High-speed binary true random code generating device based on nonlinear photovoltaic delay generator |
| CN103260095A (en) * | 2013-05-31 | 2013-08-21 | 电子科技大学 | Classified passive optical network based on synchronization of chaos |
| CN104065421A (en) * | 2014-06-30 | 2014-09-24 | 电子科技大学 | Wavelength-hopping chaotic secure communication method and system based on multi-mode lasers |
| CN105553571A (en) * | 2016-02-24 | 2016-05-04 | 西南大学 | Long distance bi-directional video secure communication device based on laser chaos |
| CN205545285U (en) * | 2016-02-24 | 2016-08-31 | 西南大学 | Length two way video secret communication device based on laser chaos |
| CN106027224A (en) * | 2016-08-01 | 2016-10-12 | 西南大学 | Secure communication system based on photoelectric feedback ring laser |
| CN106169951A (en) * | 2016-08-15 | 2016-11-30 | 上海交通大学 | Chaotic secret optical communication system based on Dual Drive MZ Mach-Zehnder |
| CN106712890A (en) * | 2016-12-09 | 2017-05-24 | 电子科技大学 | Transmitting terminal and receiving terminal of secure communication system |
| CN206237408U (en) * | 2016-11-04 | 2017-06-09 | 西南大学 | A kind of high speed visible ray chaotic secret communication device based on visible LED |
| CN107086904A (en) * | 2017-05-23 | 2017-08-22 | 西南大学 | The Chaotic Wideband Signal generating means that centre wavelength is tunable |
| CN107231227A (en) * | 2017-06-02 | 2017-10-03 | 电子科技大学 | A kind of communication system and communication means that chaotic carrier is spread based on ultra wide band |
-
2017
- 2017-10-23 CN CN201710991413.4A patent/CN107508665B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102624365A (en) * | 2012-02-24 | 2012-08-01 | 西南交通大学 | High-speed binary true random code generating device based on nonlinear photovoltaic delay generator |
| CN103260095A (en) * | 2013-05-31 | 2013-08-21 | 电子科技大学 | Classified passive optical network based on synchronization of chaos |
| CN104065421A (en) * | 2014-06-30 | 2014-09-24 | 电子科技大学 | Wavelength-hopping chaotic secure communication method and system based on multi-mode lasers |
| CN105553571A (en) * | 2016-02-24 | 2016-05-04 | 西南大学 | Long distance bi-directional video secure communication device based on laser chaos |
| CN205545285U (en) * | 2016-02-24 | 2016-08-31 | 西南大学 | Length two way video secret communication device based on laser chaos |
| CN106027224A (en) * | 2016-08-01 | 2016-10-12 | 西南大学 | Secure communication system based on photoelectric feedback ring laser |
| CN106169951A (en) * | 2016-08-15 | 2016-11-30 | 上海交通大学 | Chaotic secret optical communication system based on Dual Drive MZ Mach-Zehnder |
| CN206237408U (en) * | 2016-11-04 | 2017-06-09 | 西南大学 | A kind of high speed visible ray chaotic secret communication device based on visible LED |
| CN106712890A (en) * | 2016-12-09 | 2017-05-24 | 电子科技大学 | Transmitting terminal and receiving terminal of secure communication system |
| CN107086904A (en) * | 2017-05-23 | 2017-08-22 | 西南大学 | The Chaotic Wideband Signal generating means that centre wavelength is tunable |
| CN107231227A (en) * | 2017-06-02 | 2017-10-03 | 电子科技大学 | A kind of communication system and communication means that chaotic carrier is spread based on ultra wide band |
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