CN106571877A - Concealment-improved hopping communication encoding method based on whale cry pulse - Google Patents
Concealment-improved hopping communication encoding method based on whale cry pulse Download PDFInfo
- Publication number
- CN106571877A CN106571877A CN201610964876.7A CN201610964876A CN106571877A CN 106571877 A CN106571877 A CN 106571877A CN 201610964876 A CN201610964876 A CN 201610964876A CN 106571877 A CN106571877 A CN 106571877A
- Authority
- CN
- China
- Prior art keywords
- information
- code
- communication
- pulse
- cetacean
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B11/00—Transmission systems employing sonic, ultrasonic or infrasonic waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
The invention belongs to the field of communication, and aims to improve the camouflage concealment of underwater communication. The technical scheme adopted in a concealment-improved hopping communication encoding method based on whale cry pulse provided by the invention is as follows: communication information is carried by M communication packages (first to Mth), and each communication package is composed of a hopping handshake frame and N information frames; each hopping handshake frame is composed of a synchronization code and a plurality of information codes; there is little mutual correlation between the synchronization code and each information code and between every two information codes in each hopping handshake frame, and the synchronization code and each information code have very good self-correlation and large Doppler tolerance; further, each hopping handshake frame is used for informing a communication information receiver of the hopping rules of N information frames after the hopping handshake frame to realize communication information decoding handshake; and the communication information is transmitted through time interval encoding between code elements, namely, delay difference encoding. The method is mainly applied to underwater communication.
Description
Technical field
The invention belongs to the communications field, the disguised lifting jump group communication code of particularly a kind of utilization cetacean cry pulse
Method.
Background technology
Under water in communication system, it is capable of achieving to pretend covert communications under water using the cry pulse of cetacean, in order to further
Improve camouflage ability, should allow as much as possible communication pulse transmitting rule close to cetacean transmitting rule.
The content of the invention
To overcome the deficiencies in the prior art, it is contemplated that proposing that the disguised jump group that lifted for calling pulse using cetacean is led to
Letter coded method, the camouflage for improving subsurface communication is disguised.The technical solution used in the present invention is to call pulse using cetacean
Disguise lifts jump group communication code method, and the communication information is amounted to entrained by M communication bag by the 1st group to M groups, each communication
Bag is made up of 1 jump group handshake frames and N number of information frame；Each jump group handshake frames is by a synchronous code and several information code characters
Into；And between the synchronous code and each information code in each jump group handshake frames and information code is respectively provided between any two the mutual of very little
Dependency, meanwhile, synchronous code and each information code are respectively provided with good autocorrelation and larger doppler tolerance；Further
Ground, each jump group handshake frames be used for notify communication information receiving terminal thereafter N group informations frame jump group rule, realize communication information solution
Code shake hands；Between synchronous code and information code in each information frame, encoded by the time interval between code element, i.e. delay inequality
Encode to realize the transmission of the communication information.
Further, the quantity of information code can with the quantity of information code in other jump group handshake frames in each jump group handshake frames
It is identical to need to be set to according to application, it is also possible to be set to difference according to using needs；Further, per in group information frame
The quantity of information code and the quantity of information code in other information frame can need to be set to identical according to application, it is also possible to according to should
With needing to be set to difference.
Further, each information code and each synchronous code are by single cetacean cry pulse composition；Single cetacean cry
Pulse is referred to goes to call the effective cetacean won out in pulse train cry from cetacean by a rectangular pulse wave filter.
Further, cetacean cry pulse includes the cry pulse of the various whales in ocean, is carrying out communication code
During, it is possible to use the cry pulse of a kind of whale, it is also possible to using the cry pulse of various whales, or can also will be various
After the cry pulse of whale is won, hybrid coding is carried out.
Further, using cross-correlation, auto-correlation and doppler tolerance computing formula, by way of traveling through one by one, ask
Correlation between solution cry pulse, and cross correlation is little between filtering out, itself autocorrelation is good and Doppler holds
The big M group pulses combination of limit, respectively as jump group handshake frames；Meanwhile, cross correlation is little between filtering out, itself auto-correlation
Property the big N group pulses combination of good and doppler tolerance, respectively as information frame.
In one example, the cross correlation after normalization is more than 0.8, and time less than the autocorrelation after 0.3, normalization
Resolving power is higher than 5m and doppler tolerance is more than 3m/s.
Of the invention the characteristics of and beneficial effect are：
Propose a kind of the disguised of utilization cetacean cry pulse and lift jump group communication code method, subsurface communication can be improved
Camouflage it is disguised.
Description of the drawings：
Fig. 1 illustrates the coding structure of heretofore described coded method.
What Fig. 2 illustrated heretofore described cetacean cry pulse train and cry pulse wins schematic diagram.
Fig. 3 illustrates an instantiation of the coding structure of heretofore described coded method.
Specific embodiment
In the present invention, a kind of disguised jump group communication code method that lifted of utilization cetacean cry pulse is suggested, it
Original cetacean cry is divided into into many groups, then, these communication pulses being grouped is launched by certain jump group rule,
So that the transmitting rule of communication pulse is closer to the transmitting rule of cetacean, the camouflage for further improving communication is disguised.
To overcome the deficiencies in the prior art, the present invention to provide a kind of disguised jump group that lifted of utilization cetacean cry pulse and lead to
Letter coded method.
The present invention calls and combines jump group communication method using original cetacean, and the camouflage for improving communication is disguised.
The present invention adopts the technical scheme that a kind of the disguised of utilization cetacean cry pulse lifts jump group communication code side
Method, it realizes that process is as follows：
As shown in figure 1, the communication information is by the 1st group of communication bag ..., M group communication bags amount to M to jump group communication code method
Entrained by communication bag, each communication bag is made up of 1 jump group handshake frames and N number of information frame；
Further, each jump group handshake frames by a synchronous code and several information code characters into；And each jump group is shaken hands
Between synchronous code and each information code in frame and information code is respectively provided between any two the cross correlation of very little, meanwhile, it is synchronous
Code and each information code are respectively provided with good autocorrelation and larger doppler tolerance；Further, each jump group is shaken hands
Frame be used for notify communication information receiving terminal thereafter N group informations frame jump group rule, realize the communication information decode shake hands；
Further, per group information frame by a synchronous code and several information code characters into；And it is same in each information frame
Between step code and each information code and information code is respectively provided between any two the cross correlation of very little, meanwhile, synchronous code and every
Individual information code is respectively provided with good autocorrelation and larger doppler tolerance；Further, the synchronous code in each information frame
And information code between, the transmission of the communication information is realized by the time interval coding between code element, i.e. pattern time-delay coding；
Further, the quantity of information code can with the quantity of information code in other jump group handshake frames in each jump group handshake frames
It is identical to need to be set to according to application, it is also possible to be set to difference according to using needs；
Further, the quantity per the information code in group information frame can basis with the quantity of information code in other information frame
It is identical using needing to be set to, it is also possible to be set to difference according to using needs；
Further, each information code and each synchronous code are by single cetacean cry pulse composition；
Further, single cetacean cry pulse is referred to and is gone to call pulse sequence from cetacean by a rectangular pulse wave filter
The effective cetacean cry won out in row, as shown in Fig. 2 removing to win the live part of cetacean cry by rectangular pulse and filtering
Except noise section, so as to obtain cetacean cry pulse；
Further, using cross-correlation, auto-correlation and doppler tolerance computing formula, by way of traveling through one by one, ask
Correlation between solution cry pulse, and cross correlation is little between filtering out, itself autocorrelation is good and Doppler holds
The big M group pulses combination of limit, respectively as jump group handshake frames；Meanwhile, little (such as normalization of cross correlation between filtering out
Cross correlation afterwards less than 0.3), good (such as the autocorrelation after normalization is more than 0.8 to itself autocorrelation, and time resolution
Power is high, such as higher than 5m) and doppler tolerance big (for example doppler tolerance is more than 3m/s) N group pulses combination, make respectively
For information frame；
Further, cetacean cry pulse includes the cry pulse of the various whales in ocean, is carrying out communication code
During, it is possible to use the cry pulse of a kind of whale, it is also possible to using the cry pulse of various whales, or can also will be various
After the cry pulse of whale is won, hybrid coding is carried out.
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in figure 1, the communication information is by the 1st group of communication bag ..., M group communication bags amount to M to jump group communication code method
Entrained by communication bag, each communication bag is made up of 1 jump group handshake frames and N number of information frame；
Further, each jump group handshake frames by a synchronous code and several information code characters into；And each jump group is shaken hands
Between synchronous code and each information code in frame and information code is respectively provided between any two the cross correlation of very little, meanwhile, it is synchronous
Code and each information code are respectively provided with good autocorrelation and larger doppler tolerance；Further, each jump group is shaken hands
Frame be used for notify communication information receiving terminal thereafter N group informations frame jump group rule, realize the communication information decode shake hands；
Further, per group information frame by a synchronous code and several information code characters into；And it is same in each information frame
Between step code and each information code and information code is respectively provided between any two the cross correlation of very little, meanwhile, synchronous code and every
Individual information code is respectively provided with good autocorrelation and larger doppler tolerance；Further, the synchronous code in each information frame
And information code between, the transmission of the communication information is realized by the time interval coding between code element, i.e. pattern time-delay coding；
Further, the quantity of information code can with the quantity of information code in other jump group handshake frames in each jump group handshake frames
To need the identical of setting according to application, it is also possible to according to the difference that application needs to arrange；
Further, the quantity per the information code in group information frame can basis with the quantity of information code in other information frame
Using the identical of needs setting, it is also possible to according to the difference that application needs to arrange；
Further, each information code and each synchronous code are by single cetacean cry pulse composition；
Further, single cetacean cry pulse is referred to and is gone to call pulse sequence from cetacean by a rectangular pulse wave filter
The effective cetacean cry won out in row, as shown in Fig. 2 removing to win the live part of cetacean cry by rectangular pulse and filtering
Except noise section, so as to obtain cetacean cry pulse；
Further, using cross-correlation, auto-correlation and doppler tolerance computing formula, by way of traveling through one by one, ask
Correlation between solution cry pulse, and cross correlation is little between filtering out, itself autocorrelation is good and Doppler holds
The big M group pulses combination of limit, respectively as jump group handshake frames；Meanwhile, cross correlation is little between filtering out, itself auto-correlation
Property the big N group pulses combination of good and doppler tolerance, respectively as information frame；
Further, cetacean cry pulse includes the cry pulse of the various whales in ocean, is carrying out communication code
During, it is possible to use the cry pulse of a kind of whale, it is also possible to using the cry pulse of various whales, or can also will be various
After the cry pulse of whale is won, hybrid coding is carried out；
Further, becoming apparent from for statement, the M=2 lifted in a specific example, i.e. hypothesis Fig. 2 of the invention,
It is 5, that the quantity of the information code in N=3, the 1st and 2 jump group handshake frames is the quantity of information code in 4, a1 group information frames
In a2 group information frames the quantity of information code be information code in 7, a3 group information frames quantity be 10；From figure 3, it can be seen that the
The jump group rule of 1 group of communication bag is a1 → a2 → a3, and the jump group rule of the 2nd group of communication bag is a3 → a1 → a2；
Further, it is assumed that the cetacean cry number of pulses won out is 100, then, by the way that any two is called
Pulse carries out cross-correlation, auto-correlation and doppler tolerance and calculates, and filters out 1 synchronous code in the 1st jump group handshake frames and 4
Information code amounts to 5, and they can not only meet the little condition of mutual cross correlation, and each cry pulse can also meet
Autocorrelation is little, the requirement that doppler tolerance is big；
Further, then from 100-5=95 cry pulse in, by by any two cry pulse carry out cross-correlation,
Auto-correlation and doppler tolerance are calculated, and 1 synchronous code and 4 information codes filtered out in the 2nd jump group handshake frames amounts to 5,
And they can not only meet the little condition of mutual cross correlation, and each cry pulse can also to meet autocorrelation little, many
It is general to strangle the big requirement of tolerance limit；
Further, then from the pulse of 100-5-5=90 cry, by the way that any two cry pulse is carried out mutually
Close, auto-correlation and doppler tolerance are calculated, 1 synchronous code and 5 information codes filtered out in a1 group information frames amounts to 6,
And they can not only meet the little condition of mutual cross correlation, and each cry pulse can also to meet autocorrelation little, many
It is general to strangle the big requirement of tolerance limit；
Further, then from the pulse of 100-5-5-6=84 cry, by the way that any two cry pulse is carried out mutually
Close, auto-correlation and doppler tolerance are calculated, 1 synchronous code and 7 information codes filtered out in a2 group information frames amounts to 8,
And they can not only meet the little condition of mutual cross correlation, and each cry pulse can also to meet autocorrelation little, many
It is general to strangle the big requirement of tolerance limit；
Further, then from the pulse of 100-5-5-6-8=74 cry, by the way that any two cry pulse is carried out mutually
Related, auto-correlation and doppler tolerance are calculated, and 1 synchronous code and 10 information codes filtered out in a3 group information frames amounts to 11
It is individual, and they can not only meet the little condition of mutual cross correlation, and each cry pulse can also meet autocorrelation it is little,
The big requirement of doppler tolerance；
Note：In above example, shake hands present invention assumes that can filter out from the pulse of 100 crys and meet desired jump group
Frame and information frame, if can not if, can by 100 cry pulse quantity be increased, until can filter out meet require
Jump group handshake frames and information frame till.
Claims (6)
1. a kind of the disguised of utilization cetacean cry pulse lifts jump group communication code method, it is characterized in that, the communication information is by the 1st
Entrained by group to M groups altogether M communication bag, each communication bag is made up of 1 jump group handshake frames and N number of information frame；Each jump
Group handshake frames by a synchronous code and several information code characters into；And the synchronous code in each jump group handshake frames and each information code
Between and information code be respectively provided with the cross correlation of very little between any two, meanwhile, synchronous code and each information code are respectively provided with very
Autocorrelation well and larger doppler tolerance；Further, each jump group handshake frames is used to notify communication information receiving terminal
Thereafter the jump group rule of N group informations frame, realizes shaking hands for communication information decoding；Synchronous code and information code in each information frame it
Between, the transmission of the communication information is realized by the time interval coding between code element, i.e. pattern time-delay coding.
2. the disguised lifting jump group communication code method that pulse is called using cetacean as claimed in claim 1, is characterized in that,
Further, the quantity of information code can be according to should in the quantity of information code and other jump group handshake frames in each jump group handshake frames
It is identical with needing to be set to, it is also possible to be set to difference according to using needs；Further, per the information code in group information frame
Quantity and the quantity of information code in other information frame can need to be set to identical according to application, it is also possible to according to setting using needs
It is set to difference.
3. the disguised lifting jump group communication code method that pulse is called using cetacean as claimed in claim 1, is characterized in that,
Further, each information code and each synchronous code are by single cetacean cry pulse composition；Single cetacean cry pulse is referred to
Go to call the effective cetacean won out in pulse train cry from cetacean by a rectangular pulse wave filter.
4. the disguised lifting jump group communication code method that pulse is called using cetacean as claimed in claim 1, is characterized in that,
Further, cetacean cry pulse includes the cry pulse of the various whales in ocean, during communication code is carried out, can
With using a kind of cry pulse of whale, it is also possible to using the cry pulse of various whales, or can also crying various whales
After ping is won, hybrid coding is carried out.
5. the disguised lifting jump group communication code method that pulse is called using cetacean as claimed in claim 1, is characterized in that,
Further, using cross-correlation, auto-correlation and doppler tolerance computing formula, by way of traveling through one by one, cry arteries and veins is solved
Correlation between punching, and the M groups that cross correlation is little between filtering out, itself autocorrelation is good and doppler tolerance is big
Pulse combined, respectively as jump group handshake frames；Meanwhile, cross correlation is little between filtering out, itself autocorrelation is good and
The big N group pulses combination of doppler tolerance, respectively as information frame.
6. the disguised lifting jump group communication code method that pulse is called using cetacean as claimed in claim 1, is characterized in that,
In one example, the cross correlation after normalization is more than 0.8 less than the autocorrelation after 0.3, normalization, and time sense is high
It is more than 3m/s in 5m and doppler tolerance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964876.7A CN106571877B (en) | 2016-11-04 | 2016-11-04 | Concealment improvement hop group communication coding method using whale cry pulses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964876.7A CN106571877B (en) | 2016-11-04 | 2016-11-04 | Concealment improvement hop group communication coding method using whale cry pulses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571877A true CN106571877A (en) | 2017-04-19 |
| CN106571877B CN106571877B (en) | 2020-07-24 |
Family
ID=58536060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610964876.7A Active CN106571877B (en) | 2016-11-04 | 2016-11-04 | Concealment improvement hop group communication coding method using whale cry pulses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106571877B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199783A (en) * | 2018-01-09 | 2018-06-22 | 天津大学 | The coding method of covert communications is carried out using whale cry harmonic energy |
| CN108880698A (en) * | 2018-06-06 | 2018-11-23 | 天津大学 | Communication means and device based on cetacean cry pulse time length |
| CN110247714A (en) * | 2019-05-16 | 2019-09-17 | 天津大学 | Collection pretends and is encrypted in integrated bionical hidden underwater sound communication coding method and device |
| CN110545124A (en) * | 2019-08-09 | 2019-12-06 | 天津大学 | False-proof hidden communication structure and method based on cricket cry |
| CN116132234A (en) * | 2023-01-09 | 2023-05-16 | 天津大学 | Underwater hidden communication method and device using whale animal whistle phase code |
| CN117174109A (en) * | 2023-11-03 | 2023-12-05 | 青岛科技大学 | Feature extraction-based marine mammal sound signal imitation hidden scoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11145916A (en) * | 1997-11-12 | 1999-05-28 | Nec Corp | Submarine acoustic data communication method |
| CN1716840A (en) * | 2005-07-19 | 2006-01-04 | 中国船舶重工集团公司第七一五研究所 | Precise frame synchronizing method in hydroacoustic communication |
| CN102195763A (en) * | 2011-05-10 | 2011-09-21 | 东南大学 | Method for realizing MAC (Media Access Control) protocol under long delay condition of underwater sound sensor network |
| CN104486006A (en) * | 2014-12-02 | 2015-04-01 | 天津大学 | Method and device for carrying out camouflaged covert underwater communication by utilizing whale sound |
| CN105307139A (en) * | 2014-07-31 | 2016-02-03 | 中国电信股份有限公司 | Method, mobile terminal and system for transmitting application heartbeat signals |
-
2016
- 2016-11-04 CN CN201610964876.7A patent/CN106571877B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11145916A (en) * | 1997-11-12 | 1999-05-28 | Nec Corp | Submarine acoustic data communication method |
| CN1716840A (en) * | 2005-07-19 | 2006-01-04 | 中国船舶重工集团公司第七一五研究所 | Precise frame synchronizing method in hydroacoustic communication |
| CN102195763A (en) * | 2011-05-10 | 2011-09-21 | 东南大学 | Method for realizing MAC (Media Access Control) protocol under long delay condition of underwater sound sensor network |
| CN105307139A (en) * | 2014-07-31 | 2016-02-03 | 中国电信股份有限公司 | Method, mobile terminal and system for transmitting application heartbeat signals |
| CN104486006A (en) * | 2014-12-02 | 2015-04-01 | 天津大学 | Method and device for carrying out camouflaged covert underwater communication by utilizing whale sound |
Non-Patent Citations (1)
| Title |
|---|
| RONG NIE等: "A study of dynamics and communication mechanism for ICPF actuating tortoise-like micro-robot", 《PROCEEDINGS OF THE 2007 IEEE》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199783A (en) * | 2018-01-09 | 2018-06-22 | 天津大学 | The coding method of covert communications is carried out using whale cry harmonic energy |
| CN108880698A (en) * | 2018-06-06 | 2018-11-23 | 天津大学 | Communication means and device based on cetacean cry pulse time length |
| CN108880698B (en) * | 2018-06-06 | 2023-06-06 | 天津大学 | Communication method and device based on whale sound pulse time length |
| CN110247714A (en) * | 2019-05-16 | 2019-09-17 | 天津大学 | Collection pretends and is encrypted in integrated bionical hidden underwater sound communication coding method and device |
| CN110247714B (en) * | 2019-05-16 | 2021-06-04 | 天津大学 | Bionic hidden underwater acoustic communication coding method and device integrating camouflage and encryption |
| CN110545124A (en) * | 2019-08-09 | 2019-12-06 | 天津大学 | False-proof hidden communication structure and method based on cricket cry |
| CN110545124B (en) * | 2019-08-09 | 2021-07-27 | 天津大学 | False-proof hidden communication structure and method based on cricket cry |
| CN116132234A (en) * | 2023-01-09 | 2023-05-16 | 天津大学 | Underwater hidden communication method and device using whale animal whistle phase code |
| CN116132234B (en) * | 2023-01-09 | 2024-03-12 | 天津大学 | Underwater hidden communication method and device using whale animal whistle phase code |
| CN117174109A (en) * | 2023-11-03 | 2023-12-05 | 青岛科技大学 | Feature extraction-based marine mammal sound signal imitation hidden scoring method |
| CN117174109B (en) * | 2023-11-03 | 2024-02-02 | 青岛科技大学 | Feature extraction-based marine mammal sound signal imitation hidden scoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106571877B (en) | 2020-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106571877A (en) | Concealment-improved hopping communication encoding method based on whale cry pulse | |
| CN110460402B (en) | End-to-end communication system establishing method based on deep learning | |
| Jia-jia et al. | Bio-inspired steganography for secure underwater acoustic communications | |
| CN104022796B (en) | A kind of frequency hop sequences production method based on discontinuous frequency range and structure | |
| CN109031415A (en) | A kind of controlled source data ring drawing method based on depth convolutional neural networks | |
| CN103746804A (en) | Secure communication method based on multi-parameter fractional Fourier transform and constellation scrambling | |
| CN110545124B (en) | False-proof hidden communication structure and method based on cricket cry | |
| CN108880698A (en) | Communication means and device based on cetacean cry pulse time length | |
| CN110247714B (en) | Bionic hidden underwater acoustic communication coding method and device integrating camouflage and encryption | |
| CN103402148B (en) | Sending and receiving methods and the device thereof of the integration of three networks is realized based on Optical Code Division Multiplexing | |
| CN109033853B (en) | Physical layer information hiding method and device based on convolutional code, and terminal | |
| CN105049128B (en) | A kind of method of audio embedded multicarrier acoustic communication in playing | |
| CN108279418A (en) | Utilize the combined detection and communication device and method of whale sound | |
| CN207946525U (en) | Utilize the combined detection and communication device of whale sound | |
| RU2493659C2 (en) | Method for secure transmission of information using pulse coding | |
| RU2496239C1 (en) | Method for steganographic transmission of information through main optical channel and apparatus for implementing said method | |
| CN111064527B (en) | Camouflage hidden wireless networking communication method based on dark green bird-scaring | |
| RU2286017C2 (en) | Method for transferring information in communication system with noise-like signals | |
| RU2656994C1 (en) | Method of transmitting information signals | |
| RU2510930C1 (en) | Method of transmitting information signals and apparatus for realising said method | |
| Li et al. | A multiplexing scheme for engineered neural communication systems | |
| Kuznetsov et al. | Formation of Discrete Signals with Special Correlation Properties | |
| RU2019141342A (en) | METHOD FOR INCREASING IMMUNITY OF SYNCHRONIZATION SIGNALS | |
| CN110113136A (en) | Low complex degree decoding algorithm in a kind of SCMA system | |
| Golay | Notes on impulse equivalent pulse trains (corresp.) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |