CN110191076A - The transmission method of data in a kind of FBMC system - Google Patents
The transmission method of data in a kind of FBMC system Download PDFInfo
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- CN110191076A CN110191076A CN201910432997.0A CN201910432997A CN110191076A CN 110191076 A CN110191076 A CN 110191076A CN 201910432997 A CN201910432997 A CN 201910432997A CN 110191076 A CN110191076 A CN 110191076A
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- data
- transmission method
- fbmc system
- compiled
- backup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0014—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the source coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/264—Pulse-shaped multi-carrier, i.e. not using rectangular window
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
- H04L63/0435—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Storage Device Security (AREA)
Abstract
The invention discloses a kind of transmission methods of data in FBMC system, include the following steps: that signal receiving end first converts data stream, pre-processes, signal is compiled as mechanical code, compiled code is classified and backed up by different-waveband, next mechanical code compress and be encrypted using symmetric encipherment algorithm, obtain coded signal, coded signal is sent to transmitting terminal by Ethernet, the letter coded signal that transmitting terminal receives is decrypted and is decompressed by secret key, and the data after decompression upload to terminal.This secondary design reduces the probability of damage in data transfer by way of carrying out matrix disposal, encryption and decryption to data.
Description
Technical field
The present invention relates to a kind of transmission methods of data in FBMC technical field more particularly to FBMC system.
Background technique
Filter bank multi-carrier belongs to frequency multiplexing technique, is split channel spectrum to realize by one group of filter
The channeling of channel is that a kind of spectrum efficiency is high, implementation complexity is fine, without synchronous multi-carrier transmission scheme.FBMC
Do not use cyclic prefix, each subband not seek common ground step, and spectrum efficiency is very high.It is filtered on each subcarrier, and filter passes through
Special designing, which meets Nyquist, can eliminate intersymbol interference without intersymbol interference criterion.Collect mostly about the research of FBMC at present
In in terms of cognitive radio and frequency spectrum perception, it is intended to utilize scattered frequency range.This requires ptototype filters to meet one
It fixes and then descends side lobe attenuation horizontal high.
Summary of the invention
The invention proposes a kind of transmission methods of data in FBMC system, which comprises the following steps:
S1: signal receiving end first converts data stream, is pre-processed, and signal is compiled as mechanical code, will compile generation
Code is classified and is backed up by different-waveband；
S2: the mechanical code that S1 classification is completed compress and is encrypted using symmetric encipherment algorithm, is encrypted
Signal；
S3: data sending terminal is sent by Ethernet by the coded signal in S2；
S4: being decrypted the letter coded signal that S3 data sending terminal receives and decompressed by secret key, the number after decompression
According to uploading to terminal.
Preferably, the compiling described in S1 is compiled specifically by Kotlin compiler, the Kotlin compiling
Device executes the generation of mechanical code on backstage, and will not upset existing code, while the Kotlin compiler generates data
Intercommunication is compiled with Java.
Preferably, the backup described in S1 is LAN-Based backup, and the LAN-Based backup is based on network
Data in system are transferred in backup server, LAN-Free standby system is built upon the base of SAN (storage area network)
On plinth, the backup based on SAN is a kind of solution for thoroughly solving conventional backup mode and needing to occupy LAN bandwidth problem.
It is using a kind of completely new architecture, and by tape library and disk array respectively as independent optical fiber node, multiple host is total
When enjoying tape library backup, data flow is no longer pass through network and directly passes in tape library from disk array, is a kind of without occupying
Network bandwidth.
Preferably, the boil down to data described in S2 are compiled through LZ77, LZ78, LZW one of which algorithm.
Preferably, the Encryption Algorithm described in A3 is DES, 3DES, AES one of.
Preferably, the secret key described in S4 is DES secret key, 3DES secret key, AES secret key one of which.
Preferably, the compression ratio of compression described in S2 is 2:1, and generates ZIP, GIF, PNG format file.
Preferably, decompression module described in S2 is to use reversely being compiled to compressed file for respective algorithms.
Preferably, the encrypting step described in S2:
A1, the data of mechanical code are carried out to matrix modulation, the data around frequency pilot sign are taken with auxiliary pilot symbols
The sum of the data of band is all data to be sent；
A2, channel estimation is carried out according to the frequency pilot sign before and after matrix modulation, to generate the estimated value of channel；
A3, it is encrypted according to estimated value Algorithms of Selecting from symmetric encipherment algorithm.
Preferably, the encoder matrix of the matrix modulation described in A1 is n × (n-1) matrix, and meets CTC=I, I table
Show unit matrix.
The transmission method of data, beneficial effect are in a kind of FBMC system proposed by the present invention:
1, it is backed up by LAN-Based, data in system are transferred to by LAN-Based backup based on network
In backup server, LAN-Free standby system is built upon on the basis of SAN (storage area network), the backup based on SAN
It is a kind of solution for thoroughly solving conventional backup mode and needing to occupy LAN bandwidth problem.It is using a kind of completely new system
Structure, by tape library and disk array respectively as independent optical fiber node, when multiple host shares tape library backup, data flow
It is no longer pass through network and is directly passed in tape library from disk array, be a kind of without occupying network bandwidth.
2, it is compiled by Kotlin compiler, Kotlin compiler executes the generation of mechanical code on backstage, and not
Existing code can be upset, while the Kotlin compiler generates data and Java compiles 100% intercommunication, is adapted to current
Most of network data.
Specific embodiment
It is next combined with specific embodiments below that the present invention will be further described.
The invention proposes a kind of transmission methods of data in FBMC system, comprising the following steps:
S1: signal receiving end first converts data stream, is pre-processed, and signal is compiled as mechanical code, will compile generation
Code is classified and is backed up by different-waveband；
Compiling is compiled specifically by Kotlin compiler, and the Kotlin compiler executes mechanical code on backstage
Generation, and existing code will not be upset, while the Kotlin compiler generates data and Java compiles intercommunication；Kotlin
Compiling can adapt to code building and reading under different platform, have and high popularization and adaptability.
Backup is that LAN-Based is backed up, and data in system are transferred to by LAN-Based backup based on network
In backup server；LAN-Free standby system is built upon on the basis of SAN (storage area network), the backup based on SAN
It is a kind of solution for thoroughly solving conventional backup mode and needing to occupy LAN bandwidth problem.It is using a kind of completely new system
Structure, by tape library and disk array respectively as independent optical fiber node, when multiple host shares tape library backup, data flow
It is no longer pass through network and is directly passed in tape library from disk array, be a kind of without occupying network bandwidth.
S2: the mechanical code that S1 classification is completed compress and is encrypted using symmetric encipherment algorithm, is encrypted
Signal, specific step is as follows for encryption:
A1, the data of mechanical code are subjected to matrix modulation, encoder matrix is a n × (n-1) matrix, and is met
CTC=I, I indicate unit matrix, and the sum of data entrained by the data and auxiliary pilot symbols around frequency pilot sign is all
Data to be sent；
A2, channel estimation is carried out according to the frequency pilot sign before and after matrix modulation, to generate the estimated value of channel.
A3, it is encrypted according to estimated value Algorithms of Selecting from symmetric encipherment algorithm, Encryption Algorithm DES, 3DES, AES
It is one of.
Above-mentioned compression is specially that data are compiled through LZ77, LZ78, LZW one of which algorithm, raw with the compression ratio of 2:1
At ZIP, GIF, PNG format file, the decompression is reversely being compiled to compressed file using respective algorithms.By adding
Close and compression, it is ensured that the speed that data flow uploads and downloads, while also there is higher safety, prevent data from surprisingly letting out
Leakage.
S3: data sending terminal is sent by Ethernet by the coded signal in S2；
S4: the letter coded signal that S3 data sending terminal receives is decrypted and is decompressed by secret key, secret key is specific
DES secret key, 3DES secret key, AES secret key are one of, and the data after decompression upload to terminal.Theoretically, by symmetrical
The data of Encryption Algorithm encryption, re-encrypt in the sufficiently long situation of code, can not be cracked without using corresponding secret key, protect
The crypticity of the data of barrier, a possibility that causing risk when reducing data leak.
From the foregoing, it will be observed that 1, in receiving end, around the frequency pilot sign, auxiliary pilot symbols S and frequency pilot sign of transmission
Data D carries out demodulation process, to generate frequency pilot sign P' and auxiliary pilot symbols S' after demodulation；
2, channel estimation is carried out according to the frequency pilot sign P' after frequency pilot sign P and demodulation, to generate the estimated value of channel
H；
3, channel equalization is carried out to the auxiliary pilot symbols S' after demodulation according to the channel value H of estimation, after being equalized
Auxiliary pilot symbols S "；
4, the auxiliary pilot symbols S " after equilibrium is decoded according to encoder matrix C, with to be sent after being restored
Extra data X '=CTS.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. the transmission method of data in a kind of FBMC system, which comprises the following steps:
S1: signal receiving end first converts data stream, is pre-processed, and signal is compiled as mechanical code, compiled code is pressed
Different-waveband is classified and is backed up；
S2: the mechanical code that S1 classification is completed compress and is encrypted using symmetric encipherment algorithm, coded signal is obtained；
S3: data sending terminal is sent by Ethernet by the coded signal in S2；
S4: the letter coded signal that S3 data sending terminal receives is decrypted and is decompressed by secret key, in the data after decompression
Pass to terminal.
2. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: described in S1
Compiling is compiled specifically by Kotlin compiler, and the Kotlin compiler executes the generation of mechanical code on backstage,
And existing code will not be upset, while the Kotlin compiler generates data and Java compiles intercommunication.
3. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: described in S1
Backup is that LAN-Based is backed up, and data in system are transferred to backup services based on network by LAN-Based backup
In device, LAN-Free standby system is built upon on the basis of SAN (storage area network), and the backup based on SAN is a kind of thorough
Bottom solves the solution that conventional backup mode needs to occupy LAN bandwidth problem；It is using a kind of completely new architecture, by magnetic
Tape pool and disk array are respectively as independent optical fiber node, and when multiple host shares tape library backup, data flow is no longer pass through
Network and directly passed in tape library from disk array, be a kind of without occupying network bandwidth.
4. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: described in S2
Boil down to data are compiled through LZ77, LZ78, LZW one of which algorithm.
5. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: adding described in A3
Close algorithm is DES, 3DES, AES one of.
6. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: described in S4
Secret key is DES secret key, 3DES secret key, AES secret key one of which.
7. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: pressure described in S2
The compression ratio of contracting is 2:1, and generates ZIP, GIF, PNG format file.
8. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: solution described in S2
Die block is to use reversely being compiled to compressed file for respective algorithms.
9. the transmission method of data in a kind of FBMC system according to claim 1, it is characterised in that: described in S2
Encrypting step:
A1, the data of mechanical code are carried out to matrix modulation, entrained by the data and auxiliary pilot symbols around frequency pilot sign
The sum of data is all data to be sent；
A2, channel estimation is carried out according to the frequency pilot sign before and after matrix modulation, to generate the estimated value of channel；
A3, it is encrypted according to estimated value Algorithms of Selecting from symmetric encipherment algorithm.
10. the transmission method of data in a kind of FBMC system according to claim 9, it is characterised in that: described in A1
The encoder matrix of matrix modulation is n × (n-1) matrix, and meets CTC=I, and I indicates unit matrix.
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| CN201910432997.0A CN110191076A (en) | 2019-05-23 | 2019-05-23 | The transmission method of data in a kind of FBMC system |
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| CN201910432997.0A CN110191076A (en) | 2019-05-23 | 2019-05-23 | The transmission method of data in a kind of FBMC system |
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Citations (7)
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2019
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| CN101026836A (en) * | 2007-04-06 | 2007-08-29 | 东南大学 | Anti vocoder compressed end-to-end voice encryption device and method |
| CN101867547A (en) * | 2010-05-24 | 2010-10-20 | 北京科技大学 | Method for reducing peak-to-average power ratio of filter bank multi-carrier system |
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| CN103888406A (en) * | 2014-03-28 | 2014-06-25 | 华中科技大学 | Data transmission method for filter bank multi-carrier system |
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