CN109412647A - A kind of frequency-hopping method suitable for scatter communication system - Google Patents
A kind of frequency-hopping method suitable for scatter communication system Download PDFInfo
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- CN109412647A CN109412647A CN201910014564.3A CN201910014564A CN109412647A CN 109412647 A CN109412647 A CN 109412647A CN 201910014564 A CN201910014564 A CN 201910014564A CN 109412647 A CN109412647 A CN 109412647A
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- frequency
- communication system
- scatter communication
- hopping
- hopping method
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/22—Scatter propagation systems, e.g. ionospheric, tropospheric or meteor scatter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
- H04B1/715—Interference-related aspects
- H04B2001/7152—Interference-related aspects with means for suppressing interference
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a kind of frequency-hopping methods suitable for scatter communication system, are related to field of communication technology, 1) frequency-hopping method is the following steps are included: send signal；2) signal is received.The present invention is declined by carrying out frequency hopping, intertexture and coding using implied diversity technology to resist scatter channel, meet the high-speed and high real-time demand of system, under the premise of not increasing system complexity and hardware device, substantially improve the performance of traditional scatter communication system, solve the problems, such as that traditional frequency diversity scheme leads to system complexity height when for coping with channel fading phenomenon and performance is lower, simplify the complexity of traditional scatter communication system, system cost is reduced, is had a vast market foreground.
Description
Technical field
The present invention relates to field of communication technology, specifically a kind of frequency-hopping method suitable for scatter communication system.
Background technique
With the continuous development of science and technology, the communication technology has also obtained quick development.Wherein, scatter communication is as a kind of benefit
The over the horizon that the scattering process that electromagnetic wave generates is carried out with the inhomogeneities in airborne spread medium such as troposphere and ionosphere
The communication technology is widely applied in field of communication technology.Since convection current sheaf space is not ideal free space, atmosphere is not
The reflection and refraction that homogeneous body generates disorder to the portion of energy of electric wave lead to scatter communication system to form Multipath Transmission
There are serious channel fading phenomenons to generally use traditional frequency diversity scheme for above-mentioned phenomenon as counter-measure
To improve system performance.
But there is also following deficiencies in actual use for traditional frequency diversity scheme: being when diversity branch is less
Performance of uniting is low, and the complexity of receiver signal processing can greatly increase when diversity branch is more.Therefore, it designs a kind of suitable for dissipating
The frequency-hopping method for penetrating communication system, for resisting the problem of scatter channel declines, becomes current urgent need to resolve.
Summary of the invention
The purpose of the present invention is to provide a kind of frequency-hopping methods suitable for scatter communication system, to solve above-mentioned background skill
The problem of proposing in art resists scattering letter using implied diversity technology under the premise of not increasing system complexity and hardware device
Road decline, greatly improves system performance.
To achieve the above object, the invention provides the following technical scheme:
A kind of frequency-hopping method suitable for scatter communication system, which is characterized in that it the following steps are included:
1) it sends signal: signal successively being encoded by transmitting terminal, is interweaved, jump is organized and obtains modulation letter after modulating
Number, it then carries out upconverting to tranmitting frequency under frequency hopping pattern control, then be sent in channel；
2) it receives signal: so that frequency hopping pattern is synchronized to receiving end corresponding with transmitting terminal by down coversion, then successively
By demodulating, solving jump and data are sent to decoder decode after deinterleaving.
As a further solution of the present invention: in step 1), the signal is the low speed waveform that rate is 32K.
As further scheme of the invention: the time span of one frame of low speed waveform is 1024 milliseconds, and each
Frame is made of 16 time slots, and each time slot has 8 hop count evidences, and a length of 8 milliseconds when every jump.
As the present invention further scheme: in step 1), the coding use code rate for 1/4 Turbo code.
As further scheme of the invention: in step 1), described group of jump is that signal averaging is divided into 8 segment datas.
As the present invention further scheme: in step 1), it is described be modulated to using binary phase shift keying technology into
Row modulation.
A kind of computer readable storage medium, is stored thereon with computer program instructions, which is held by processor
The step of above method is realized when row.
The application suitable for the frequency-hopping method of scatter communication system scatter communication.
Compared with prior art, the beneficial effects of the present invention are:
The present invention resists scatter channel decline by carrying out frequency hopping, intertexture and coding using implied diversity technology and other are dry
It disturbs, meets the high-speed and high real-time demand of system, under the premise of not increasing system complexity and hardware device, significantly
The performance for improving traditional scatter communication system solves traditional frequency diversity scheme for when coping with channel fading phenomenon
Lead to the problem that system complexity is high and performance is lower, simplify the complexity of traditional scatter communication system, reduce system at
This, has a vast market foreground.
Detailed description of the invention
Fig. 1 is the flow chart of the frequency-hopping method suitable for scatter communication system.
Fig. 2 is the structural schematic diagram of the transmitting terminal suitable for the frequency-hopping method of scatter communication system.
Fig. 3 is the structural schematic diagram of the receiving end suitable for the frequency-hopping method of scatter communication system.
Specific embodiment
Present invention will be explained in further detail in the following with reference to the drawings and specific embodiments.Following embodiment will be helpful to
Those skilled in the art further understands the present invention, but the invention is not limited in any way.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the inventive concept of the premise, various modifications and improvements can be made.These
Belong to protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " instruction is described special
Sign, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature, entirety, step,
Operation, the presence or addition of element, component and/or its set.
Embodiment 1
A kind of frequency-hopping method suitable for scatter communication system, with reference to Fig. 1, it the following steps are included:
1) it sends signal: signal successively being encoded by transmitting terminal, is interweaved, jump is organized and obtains modulation letter after modulating
Number, it then carries out upconverting to tranmitting frequency under frequency hopping pattern control, then be sent in channel；
Wherein, the signal is the low speed waveform that rate is 32K (i.e. 32kbit/s)；The time of one frame of low speed waveform
Length is 1024 milliseconds, and each frame is made of 16 time slots, and each time slot has 8 hop count evidences, and a length of 8 milliseconds when every jump；Institute
State coding use code rate for 1/4 Turbo code；Described group of jump is that signal averaging is divided into 8 segment datas；It is described to be modulated to using two
System phase shift keying technology is modulated；
2) it receives signal: so that frequency hopping pattern is synchronized to receiving end corresponding with transmitting terminal by down coversion, then successively
By demodulating, solving jump and data are sent to decoder decode after deinterleaving.
In the present embodiment, a kind of computer readable storage medium is stored thereon with computer program instructions, the program instruction
The step of above method is realized when being executed by processor.
In the present embodiment, the application suitable for the frequency-hopping method of scatter communication system scatter communication.
Embodiment 2
A kind of frequency-hopping method suitable for scatter communication system, please refers to Fig. 1-3, it the following steps are included:
1) it sends signal: signal successively being encoded by transmitting terminal, is interweaved, jump is organized and obtains modulation letter after modulating
Number, it then carries out upconverting to tranmitting frequency under frequency hopping pattern control, then be sent in channel；Wherein, the transmission
End includes sequentially connected coding module, interleaving block, group mode hopping block and modulation module；
2) it receives signal: so that frequency hopping pattern is synchronized to receiving end corresponding with transmitting terminal by down coversion, then successively
By demodulating, solving jump and data are sent to decoder decode after deinterleaving；Wherein, the receiving end include according to
Demodulation module, solution mode hopping block, de-interleaving block and the decoding module of secondary connection, and the decoding module is decoder, is not directed to
Part is the same as those in the prior art or can be realized by using the prior art.
In the present embodiment, a kind of computer readable storage medium is stored thereon with computer program instructions, the program instruction
The step of above method is realized when being executed by processor.
In the present embodiment, the application suitable for the frequency-hopping method of scatter communication system scatter communication.
Embodiment 3
A kind of frequency-hopping method suitable for scatter communication system, referring to FIG. 1, it the following steps are included:
1) it sends signal: signal successively being encoded by transmitting terminal, is interweaved, jump is organized and obtains modulation letter after modulating
Number, it then carries out upconverting to tranmitting frequency under frequency hopping pattern control, then be sent in channel；The transmitting terminal is by compiling
The modules compositions such as code, intertexture, group jump, modulation and up-conversion, modulated signal upconvert to transmitting in the case where frequency hopping pattern controls
Frequency is finally sent in channel；
2) it receives signal: so that frequency hopping pattern is synchronized to receiving end corresponding with transmitting terminal by down coversion, then successively
By demodulating, solving jump and data are sent to decoder decode after deinterleaving；The receiving end is opposite with transmitting terminal
It answers, is made of modules such as down coversion, demodulation, solution jump, deinterleaving and decodings, receiving end makes to jump under certain hopping control
Frequency pattern is synchronized to transmitting terminal, and data are finally sent to decoder.
In the present embodiment, frame structure and group jump process are introduced so that rate is the low speed waveform of 32K as an example, by adopting waveform
Turbo code and BPSK (binary phase shift keying) modulation system with code rate for 1/4, information bit is 2048 before encoding, letter
Become 8192 bits after road coding, channel interleaving is carried out to 8192 bits, is then equally divided into 8 segment datas, and right respectively
8 frequency hopping frequency points are answered, and then completion group is jumped；Wherein, the time span of one frame of 32K rate waveform be 1024 milliseconds, each frame by
16 time slot SLOT compositions, each time slot have 8 hop count evidences, respectively correspond eight frequency hopping frequencies of F0, F1, F2, F3, F4, F5, F6 and F7
Point, every jump duration is 8 milliseconds.
In the present embodiment, a kind of computer readable storage medium is stored thereon with computer program instructions, the program instruction
The step of above method is realized when being executed by processor.
In the present embodiment, the application suitable for the frequency-hopping method of scatter communication system scatter communication.
It, can according to demand and system features adjust following parameter: frame it should be further noted that in practical applications
Length, frequency hopping frequency point number, every jump length, modulation coding scheme, time slot SLOT length and number；But according to the spy of scatter channel
The time span of point, pilot and data segment and as far as possible be no more than 8 milliseconds.
Present invention has the advantages that the present invention is scattered to resist by carrying out frequency hopping, intertexture and coding using implied diversity technology
Channel fading and other interference are penetrated, the high-speed and high real-time demand of system are met, are not increasing system complexity and hard
Under the premise of part equipment, substantially improve the performance of traditional scatter communication system, solve traditional frequency diversity scheme with
Lead to the problem that system complexity is high and performance is lower when coping with channel fading phenomenon, simplifies traditional scatter communication system
Complexity reduces system cost, has a vast market foreground.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can for
Machine memory, flash memory, read-only memory, programmable read only memory, electrically erasable programmable memory, register etc..
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
Various changes can be made.There is no necessity and possibility to exhaust all the enbodiments.And it thus amplifies out apparent
Variation or variation be still in the protection scope of this invention.
Claims (8)
1. a kind of frequency-hopping method suitable for scatter communication system, which is characterized in that it the following steps are included:
1) it sends signal: signal successively being encoded by transmitting terminal, is interweaved, jump is organized and obtains modulated signal after modulating, so
It carries out upconverting to tranmitting frequency under frequency hopping pattern control afterwards, then be sent in channel；
2) it receives signal: so that frequency hopping pattern is synchronized to receiving end corresponding with transmitting terminal by down coversion, then pass sequentially through
Demodulation, solution jump and data are sent to decoder after deinterleaving and decode.
2. the frequency-hopping method according to claim 1 suitable for scatter communication system, which is characterized in that in step 1), institute
Stating signal is the low speed waveform that rate is 32K.
3. the frequency-hopping method according to claim 2 suitable for scatter communication system, which is characterized in that the low speed waveform
The time span of one frame is 1024 milliseconds, and each frame is made of 16 time slots.
4. the frequency-hopping method according to claim 1 to 3 suitable for scatter communication system, which is characterized in that step 1)
In, it is described coding use code rate for 1/4 Turbo code.
5. the frequency-hopping method according to claim 4 suitable for scatter communication system, which is characterized in that in step 1), institute
Group jump is stated as signal averaging is divided into 8 segment datas.
6. the frequency-hopping method according to claim 5 suitable for scatter communication system, which is characterized in that in step 1), institute
It states and is modulated to be modulated using binary phase shift keying technology.
7. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is characterized in that the program instruction quilt
The step of claim 1-6 any the method is realized when processor executes.
8. a kind of answering scatter communication suitable for the frequency-hopping method of scatter communication system as described in claim 1-6 is any
With.
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| CN201910014564.3A CN109412647A (en) | 2019-01-08 | 2019-01-08 | A kind of frequency-hopping method suitable for scatter communication system |
| CN202210685764.3A CN114944848A (en) | 2019-01-08 | 2019-01-08 | Frequency hopping method suitable for scattering communication system |
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| CN113746536A (en) * | 2021-07-22 | 2021-12-03 | 中国电子科技集团公司第五十四研究所 | Scattering communication method, signal transmitting device, signal receiving device and system |
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| CN117040610A (en) * | 2023-08-23 | 2023-11-10 | 北京慧清科技有限公司 | ACM frequency-selecting waveform method suitable for FDD scattering communication system |
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Application publication date: 20190301 |