CN109167616A - A kind of power carrier spread-spectrum communication system and broadband communication method - Google Patents
A kind of power carrier spread-spectrum communication system and broadband communication method Download PDFInfo
- Publication number
- CN109167616A CN109167616A CN201811128043.2A CN201811128043A CN109167616A CN 109167616 A CN109167616 A CN 109167616A CN 201811128043 A CN201811128043 A CN 201811128043A CN 109167616 A CN109167616 A CN 109167616A
- Authority
- CN
- China
- Prior art keywords
- signal
- frequency
- modulator
- branch
- electrically connected
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- 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
-
- 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
-
- 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
Abstract
A kind of power carrier spread-spectrum communication system of the present invention, including signal transmitting module and signal receiving module, signal source is electrically connected with the first signal modulator, first frequency mixer is electrically connected with the first signal modulator, first frequency synthesizer, the first coupling circuit respectively, and the first frequency hopping series is electrically connected with first frequency synthesizer；Second frequency mixer is electrically connected with the second coupling circuit, bandpass filtering, second frequency synthesizer respectively, second frequency hopping series is electrically connected with second frequency synthesizer, with display system respectively, and second signal modulator is electrically connected with bandpass filtering, signal end, with display system respectively.The present invention efficiently reduces influence of the ambient noise on power line to signal of communication, to improve the reliability of powerline network communication, and then has the advantages that design is reasonable, connection structure is simple, system energy consumption is low, work efficiency is high.The present invention also provides a kind of broadband communication methods.
Description
Technical field
The invention belongs to signal spreading technique fields, logical more particularly to a kind of power carrier spread-spectrum communication system and spread spectrum
Communication method.
Background technique
Currently, power network is the physical network that user popularizes, user using group is that any network is all incomparable, and
The existing of power network is mainly used for transmission electric energy.Power line communication (PowerLine Communication, PLC) is
Refer to establish it is on the basis of power delivery network, realize inside powerline network between each node and with other communication networks it
Between the system that communicates.In recent years, compared with telecommunications network and cable television network, power line communication network is with its resource is wide and family
It the advantages such as is tightly combined and increasingly causes the concern of people, and be rapidly developed.The application of PLC has been not limited to simple point-to-point
Transmission, American-European some countries are just studying its application in intellectual communityintellectualized village and in terms of accessing net, this is the development of information network
The inexorable trend occurred with information household appliances.The design of special communication module determines whether these functions can high quality, low cost
Ground is realized and security performance and the power line protection that Keep Clear-High Voltage of system.To the channel of this strong background noise of power line,
A kind of effective means for data transmission is exactly using spread spectrum (Spread Spectrum, SS) technology.Spread spectrum is exactly
The frequency spectrum of the baseband signal of carrying information data is extended with pseudo noise code, the signal for forming wideband low power spectrum density comes
It sends.In this way, signal extraction can be come out using appropriate means in receiving end, to reduce noise to the shadow of signal
It rings, ensure that the reliable communication on power line network.How electric power networks resource potential is utilized, in the base for not influencing transmission electric energy
On plinth, realizes narrowband or broadband connections, make the another communication after telecommunications, phone, wireless communication, satellite communication
Net.However, its ambient noise of the spread spectrum to electric power in the prior art still remains, so that the reliability of powerline network communication
It is lower, cause the transmission of signal unstable.
For this purpose, the present invention provides a kind of power carrier spread-spectrum communication system.
In addition, the present invention also provides a kind of broadband communication methods.
Summary of the invention
In view of the above problem existing for existing technology, the purpose of the present invention is to provide a kind of power carrier broadband communications
System, the present invention can effectively reduce influence of the ambient noise on power line to signal of communication, to improve power line network
The reliability of network communication, so that entire power line network communicating circuit has, design is reasonable, connection structure is simple, system energy consumption
Low, the advantages of work efficiency is high.
Object of the invention can be realized by the following technical scheme:
A kind of power carrier spread-spectrum communication system, including signal transmitting module and signal receiving module, the signal transmitting module
Including signal source, the first signal modulator, the first frequency mixer, the first frequency hopping series, first frequency synthesizer, the first coupling electricity
Road, the signal source are electrically connected with first signal modulator, first frequency mixer respectively with first signal modulation
Device, first frequency synthesizer, the electrical connection of the first coupling circuit, the first frequency hopping series are electrically connected with the first frequency synthesizer
It connects；
The signal receiving module includes signal end, the second coupling circuit, the second frequency mixer, bandpass filtering, second signal modulation
Device, second frequency synthesizer, the second frequency hopping series, same to display system, second frequency mixer respectively with second coupling circuit,
Bandpass filtering, the electrical connection of second frequency synthesizer, the second frequency hopping series are with the second frequency synthesizer, with frequency respectively
System electrical connection, the second signal modulator are electrically connected with the bandpass filtering, signal end, with display system respectively.
Further, first coupling circuit are electrically connected by power line channel with second coupling circuit, described
First signal modulator and second signal modulator are FSK modulation device.
Preferably, the FSK modulation device is matched filter.
Further, the signal source and the first frequency hopping series have single-chip microcontroller generation.
Further, described to be configured to 1/4 symbol branch of advanced 1/4 symbol branch and lag in signal receiving end, in advance
Advanced 1/4 symbol width of present branch of 1/4 symbol branch, 1/4 symbol branch of lag lag 1/4 symbol width of present branch；Institute
It states advanced 1/4 symbol branch and the moment is arrived as the judgement moment using the pulse in narrow pulse clock anticipating signal source；The lag
1/4 symbol branch arrives the moment as the judgement moment using the pulse in narrow pulse clock delay signal source.
The present invention also provides a kind of broadband communication method using power carrier spread-spectrum communication system as described above, packets
It includes:
Step S100: in signal transmitting module, signal source obtains a carrier wave after first signal modulator demodulation
Frequency is the sinusoidal signal of f0 or f1, and the jump local oscillator carrier wave of the carrier frequency fF1 issued with the first frequency synthesizer is believed
Number, after first frequency mixer, the FM signal that a frequency is f0+fF1 or f1+fF1 is obtained, by the first coupling
Device is sent on the power line channel；
Step S200: in signal receiving end module, the signal that frequency is f0+fF1 or f1+fF1 passes through second coupler
Enter the second frequency mixer afterwards, and the jump local oscillator carrier wave for being fF1 with the carrier frequency issued from the second frequency synthesizer is believed
After being mixed number in second frequency mixer, the FM signal and a frequency that a frequency is f0+fF1 or f1+fF1 are obtained
For the signal of f0 or fF1, signal to be modulated is obtained after the bandpass filtering, it will letter after the demodulation of second signal modulator
Number it is sent to signal end.
Preferably, first signal modulator or second signal modulator include that orthogonal digital controlled oscillator and integral are clear
Zero device, orthogonal digital controlled oscillator include the first quadrature demodulator and Y branch that T branch is used to generate that local oscillation signal At to be cos b1*t
Road is the second quadrature demodulator of sin b1*t for generating local oscillation signal Ay, and the input signal for counting signal source is cos (b2 t+
￠), Δ b=b1-b2, wherein the orthogonal function control oscillator exports result: A=At2+Ay2=sin (Δ bt/2)/Δ b.
Preferably, the local carrier when frequency input signal of the signal source is f 1, with the generation of the second quadrature demodulator
Frequency difference be 0, output signal A=T/2 of the second quadrature demodulator, be maximum, local carried with what the first quadrature demodulator issued
The frequency difference of wave is | f1-f0 |=chip rate, output signal A=0 of first quadrature demodulator.
Preferably, described when the frequency input signal of signal source is f0, output signal A=T/ of the first quadrature demodulator
2, be maximum, the frequency difference of local carrier issued with the second quadrature demodulator is | f1-f0 |=chip rate, described second just
Hand over output signal A=0 of demodulator.
As described above, a kind of power carrier spread-spectrum communication system of the present invention, has the advantages that
The application utilize above-mentioned power carrier spread-spectrum communication system after, compared with prior art for, due to use this germline
System makes after the signal spread-spectrum of signal source by carrying out selection judgement with special the first signal modulator and second signal modulator
As a result, improve the jamproof ability of signal source, efficiently reduce influence of the ambient noise on power line to signal of communication,
To improve the reliability of powerline network communication so that entire power line network communicating circuit have design rationally,
The advantages of connection structure is simple, system energy consumption is low, work efficiency is high.
Detailed description of the invention
Fig. 1 is a kind of structural block diagram of power carrier spread-spectrum communication system；
Fig. 2 is broadband communication method flow diagram of the invention；
Fig. 3 is the first quadrature demodulator of the invention or the second quadrature demodulator structural schematic diagram.
Fig. 4 is matched filter structural schematic diagram of the invention.
Component label instructions.
1, signal transmitting module；11, signal source；12, the first signal modulator；13, the first frequency mixer；14, the first frequency hopping
Series；15, first frequency synthesizer；16, the first coupling circuit；2, signal receiving module；21, signal end；211, orthogonal numerical control
Oscillator；212, integrate-dump device；2111, the first quadrature demodulator；2112, the second quadrature demodulator；22, the second coupling electricity
Road；23, the second frequency mixer；24, bandpass filtering；25, second signal modulator；26, second frequency synthesizer；27, the second frequency hopping
Series；28, same to display system；3, power line channel.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that structure depicted in this specification attached drawing, ratio, size etc., only to cooperate specification revealed
Content is not intended to limit the invention enforceable qualifications, therefore does not have so that those skilled in the art understands and reads
Technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing institute's energy of the present invention
Under the effect of generation and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be merely convenient to
Narration is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, and is changing skill without essence
It is held in art, when being also considered as the enforceable scope of the present invention.The attached drawing that specific structure can refer to patent application is illustrated.
As shown in Figure 1, a kind of power carrier spread-spectrum communication system, including signal transmitting module 1 and signal receiving module 2,
The signal transmitting module includes signal source 11, the first signal modulator 12, the first frequency mixer 13, the first frequency hopping series 14,
One frequency synthesizer 15, the first coupling circuit 16, the signal source 11 are electrically connected with first signal modulator 12, and described
One frequency mixer 13 is electrically connected with first signal modulator 12, first frequency synthesizer 15, the first coupling circuit 16 respectively, institute
The first frequency hopping series 14 is stated to be electrically connected with the first frequency synthesizer 15；The signal receiving module 2 includes signal end 21, the
Two coupling circuit 22, the second frequency mixer 23, bandpass filtering 24, second signal modulator 25, second frequency synthesizer 26, second are jumped
Frequency series 27, with display system 28, second frequency mixer 23 respectively with second coupling circuit 22, bandpass filtering 24, second
Frequency synthesizer 26 is electrically connected, and the second frequency hopping series 27 is respectively with the second frequency synthesizer 26, with 28 electricity of display system
Connection, the second signal modulator 25 are electrically connected with the bandpass filtering 24, signal end 21, with display system 28 respectively.
The present invention compared with prior art for, due to employing such a system, make after the signal spread-spectrum of signal source 11 by
Doing as a result, improving signal source and resisting for selection judgement is carried out with the first special signal modulator 12 and second signal modulator 25
The ability disturbed efficiently reduces influence of the ambient noise on power line to signal of communication, so that it is logical to improve power line network
The reliability of letter, so that entire power line network communicating circuit has, design is reasonable, connection structure is simple, system energy consumption
Low, the advantages of work efficiency is high.
Further, as shown in Figure 1, first coupling circuit 16 couple electricity with described second by power line channel 3
Road 22 is electrically connected, and first signal modulator 12 and second signal modulator 25 are FSK modulation device.Preferably, the FSK
Modulator is matched filter.
Further, the signal source 11 and the first frequency hopping series 14 have single-chip microcontroller generation；First frequency synthesis
Device 15, second frequency synthesizer 23 are realized in programmable gate array.
In above-mentioned same display system, as shown in Figure 1 and Figure 4, using bit synchronization method, bit synchronization method uses lead-lag
Bit synchronization method is configured to advanced 1/4 symbol branch (not shown) and lag 1/4 symbol branch (figure in signal receiving end 21
In be not shown), advanced advanced 1/4 symbol width of present branch of 1/4 symbol branch, lag 1/4 symbol branch lag present branch
1/4 symbol width.Present branch arrives the moment as the judgement moment using the pulse of narrow pulse clock for demodulating；It is described super
Preceding 1/4 symbol branch arrives the moment as the judgement moment using the pulse in narrow pulse clock anticipating signal source；1/4 yard of the lag
First branch arrives the moment as the judgement moment using the pulse in narrow pulse clock delay signal source.
As depicted in figs. 1 and 2, the present invention also provides a kind of expansions using power carrier spread-spectrum communication system as described above
The frequency means of communication, comprising:
Step S100: in signal transmitting module 1, signal source 11 obtains one after first signal modulator 12 demodulation
A carrier frequency is the sinusoidal signal of f0 or f1, the jump sheet of the carrier frequency fF1 issued with the first frequency synthesizer 15
Carrier signal of shaking obtains the FM signal that a frequency is f0+fF1 or f1+fF1, warp after first frequency mixer 13
The first coupler 16 is crossed to be sent on the power line channel 3；
Step S200: in signal receiving end module 2, the signal that frequency is f0+fF1 or f1+fF1 passes through second coupler
Enter the second frequency mixer 23, and the jump local oscillator for being fF1 with the carrier frequency issued from the second frequency synthesizer 26 after 22
After carrier signal is mixed in second frequency mixer 23, obtain a frequency be f0+fF1 or f1+fF1 FM signal and
The signal that one frequency is f0 or fF1, obtains signal to be modulated after the bandpass filtering 24, by second signal modulator
Signal end 21 is transmitted signals to after 25 demodulation.
Preferably, as shown in Fig. 1, Fig. 3 and Fig. 4, first signal modulator 21 or the second signal modulator
25 include orthogonal digital controlled oscillator (NCO) 211 and integrate-dump device 212, and orthogonal digital controlled oscillator (NCO) 211 includes T branch
The first quadrature demodulator (DM0) 2111 and Y branch for generating local oscillation signal At as cos b1*t is for generating local oscillation signal
Ay is the second quadrature demodulator of sin b1*t (DM1) 2112, and the input signal for counting signal source is cos (b2 t+ ￠), Δ b=b1-
B2, wherein the orthogonal function control oscillator 211 exports result: A=At2+Ay2=sin (Δ bt/2)/Δ b.
Preferably, as shown in Fig. 1, Fig. 3 and Fig. 4, when the frequency input signal of the signal source 11 is f1, just with second
Hand over demodulator (DM1) 2112 occur local carrier frequency difference be 0, the second quadrature demodulator 2112(DM1) output signal A=
T/2 is maximum, is with the first quadrature demodulator 2111(DM0) frequency difference of local carrier issued | f1-f0 |=chip rate,
The first quadrature demodulator 2111(DM0) output signal A=0.
Wherein, as shown in Fig. 1, Fig. 3 and Fig. 4, above-mentioned first frequency mixer 13, the second frequency mixer 23 are in FPGA with band symbol
Number high-speed gear realize.The IP Core of orthogonal digital controlled oscillator (NCO) 211 programmable gate array internal is realized.Integral
It resets device 212 to be realized with accumulator, integral result is reset at the current sample judgement moment, current sample adjudicates the moment by sampling
Signal source of clock determines.
Preferably, as shown in Fig. 1, Fig. 3 and Fig. 4, described when the frequency input signal of signal source 11 is f0, first just
Output signal A=T/2 of demodulator (DM0) 2111 is handed over, is maximum, the local issued with the second quadrature demodulator (DM1) 2112
The frequency difference of carrier wave is | f1-f0 |=chip rate, output signal A=0 of second quadrature demodulator (DM1) 2112.
As described above, a kind of power carrier spread-spectrum communication system of the present invention, has the advantages that
The application utilize above-mentioned power carrier spread-spectrum communication system after, compared with prior art for, due to use this germline
System makes after the signal spread-spectrum of signal source by carrying out selection judgement with special the first signal modulator and second signal modulator
As a result, improve the jamproof ability of signal source, efficiently reduce influence of the ambient noise on power line to signal of communication,
To improve the reliability of powerline network communication so that entire power line network communicating circuit have design rationally,
The advantages of connection structure is simple, system energy consumption is low, work efficiency is high.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of power carrier spread-spectrum communication system, including signal transmitting module and signal receiving module, it is characterised in that: described
Signal transmitting module include signal source, the first signal modulator, the first frequency mixer, the first frequency hopping series, first frequency synthesizer,
First coupling circuit, the signal source are electrically connected with first signal modulator, and first frequency mixer is respectively with described
One signal modulator, first frequency synthesizer, the electrical connection of the first coupling circuit, the first frequency hopping series and the first frequency
Synthesizer electrical connection；The signal receiving module includes signal end, the second coupling circuit, the second frequency mixer, bandpass filtering, second
Signal modulator, second frequency synthesizer, the second frequency hopping series, same to display system, second frequency mixer is respectively with described second
Coupling circuit, bandpass filtering, the electrical connection of second frequency synthesizer, the second frequency hopping series are synthesized with the second frequency respectively
Device is electrically connected with display system, and the second signal modulator is electrically connected with the bandpass filtering, signal end, with display system respectively.
2. power carrier spread-spectrum communication system according to claim 1, it is characterised in that: first coupling circuit pass through
Power line channel is electrically connected with second coupling circuit, and first signal modulator and second signal modulator are FSK
Modulator.
3. power carrier spread-spectrum communication system according to claim 2, it is characterised in that: the FSK modulation device is matching
Filter.
4. power carrier spread-spectrum communication system according to claim 1, it is characterised in that: the signal source and described first
Frequency hopping series has single-chip microcontroller generation.
5. power carrier spread-spectrum communication system according to claim 1, it is characterised in that: described to be constructed in signal receiving end
For advanced 1/4 symbol branch and 1/4 symbol branch is lagged, advanced advanced 1/4 symbol width of present branch of 1/4 symbol branch is stagnant
1/4 symbol branch lags 1/4 symbol width of present branch afterwards；The advanced 1/4 symbol branch is believed in advance using narrow pulse clock
The pulse in number source arrives the moment as the judgement moment；1/4 symbol branch of the lag is using narrow pulse clock delay signal source
Pulse arrives the moment as the judgement moment.
6. a kind of broadband communication method of the power carrier spread-spectrum communication system using claim 1 characterized by comprising
Step S100: in signal transmitting module, signal source obtains a carrier wave after first signal modulator demodulation
Frequency is the sinusoidal signal of f 0 or f 1, the jump local oscillator carrier wave of the carrier frequency f F1 issued with the first frequency synthesizer
Signal obtains the FM signal that a frequency is f 0+ f F1 or f 1+ f F1, passes through after first frequency mixer
First coupler is sent on the power line channel；
Step S200: in signal receiving end module, the signal that frequency is f 0+ f F1 or f 1+ f F1 passes through described second
Enter the second frequency mixer, and the jump local oscillator for being f F1 with the carrier frequency issued from the second frequency synthesizer after coupler
After carrier signal is mixed in second frequency mixer, the FM signal that a frequency is f 0+ f F1 or f 1+ f F1 is obtained
And the signal that a frequency is f 0 or f F1, signal to be modulated is obtained after the bandpass filtering, by second signal tune
Signal end is transmitted signals to after device demodulation processed.
7. broadband communication method according to claim 5, it is characterised in that: first signal modulator or second signal
Modulator includes orthogonal digital controlled oscillator and integrate-dump device, and orthogonal digital controlled oscillator includes T branch for generating local oscillator letter
The first quadrature demodulator and Y branch that number At is cos b1*t are the second quadrature demodulation of sin b1*t for generating local oscillation signal Ay
Device, the input signal for counting signal source is cos (b2 t+ ￠), Δ b=b1-b2, wherein orthogonal function control oscillator output knot
Fruit: A=At2+Ay2=sin (Δ bt/2)/Δ b.
8. broadband communication method according to claim 5, it is characterised in that: the frequency input signal of the signal source is f
When 1, the frequency difference of the local carrier occurred with the second quadrature demodulator is 0, and output signal A=T/2 of the second quadrature demodulator is
Maximum, the frequency difference of local carrier issued with the first quadrature demodulator be | f 1- f 0 |=chip rate, described first just
Hand over output signal A=0 of demodulator.
9. broadband communication method according to claim 5, it is characterised in that: described when the frequency input signal of signal source is
When f 0, output signal A=T/2 of the first quadrature demodulator is maximum, the local carrier issued with the second quadrature demodulator
Frequency difference be | f 1- f 0 |=chip rate, output signal A=0 of second quadrature demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128043.2A CN109167616A (en) | 2018-09-27 | 2018-09-27 | A kind of power carrier spread-spectrum communication system and broadband communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128043.2A CN109167616A (en) | 2018-09-27 | 2018-09-27 | A kind of power carrier spread-spectrum communication system and broadband communication method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109167616A true CN109167616A (en) | 2019-01-08 |
Family
ID=64880394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128043.2A Pending CN109167616A (en) | 2018-09-27 | 2018-09-27 | A kind of power carrier spread-spectrum communication system and broadband communication method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109167616A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464209A (en) * | 2020-03-29 | 2020-07-28 | 辽宁双宜电力电子有限公司 | Low-voltage power line carrier communication anti-interference system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478331A (en) * | 2009-01-23 | 2009-07-08 | 东南大学 | Constructing method for dual time frequency non-repeat non-complete frequency hopping sequence |
| CN101594165A (en) * | 2009-06-19 | 2009-12-02 | 中国科学院微电子研究所 | A kind of mixed spread spectrum communication system and method for work thereof |
| CN102195679A (en) * | 2010-03-10 | 2011-09-21 | 青岛东软载波科技股份有限公司 | Power line carrier modulation method, demodulation method, circuit and chip |
| CN104604146A (en) * | 2012-09-07 | 2015-05-06 | 恩莫杜斯有限公司 | Interference cancellation |
-
2018
- 2018-09-27 CN CN201811128043.2A patent/CN109167616A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478331A (en) * | 2009-01-23 | 2009-07-08 | 东南大学 | Constructing method for dual time frequency non-repeat non-complete frequency hopping sequence |
| CN101594165A (en) * | 2009-06-19 | 2009-12-02 | 中国科学院微电子研究所 | A kind of mixed spread spectrum communication system and method for work thereof |
| CN102195679A (en) * | 2010-03-10 | 2011-09-21 | 青岛东软载波科技股份有限公司 | Power line carrier modulation method, demodulation method, circuit and chip |
| CN104604146A (en) * | 2012-09-07 | 2015-05-06 | 恩莫杜斯有限公司 | Interference cancellation |
Non-Patent Citations (1)
| Title |
|---|
| 王慧: "跳频接收机同步技术的研究与实现", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111464209A (en) * | 2020-03-29 | 2020-07-28 | 辽宁双宜电力电子有限公司 | Low-voltage power line carrier communication anti-interference system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Leung | VLSI for wireless communication | |
| US20060280231A1 (en) | Spread spectrum applications of universal frequency translation | |
| CN101146072B (en) | Ultra-narrow bandwidth communication method with highly-low linear frequency modulation key control modulation | |
| CN106374965A (en) | Lora-modulation-mode-based SPI interface internet-of-things wireless transceiver | |
| CN102739590A (en) | CP-EBPSK communication system for pseudorandom sequence phase modulation and communication method thereof | |
| CN103023533B (en) | Communication method and communication device for dual-frequency power line carrier | |
| CN101582868B (en) | Extended binary phase shift keying modulation and demodulation method for frequency spectrum compression | |
| CN109167616A (en) | A kind of power carrier spread-spectrum communication system and broadband communication method | |
| MXPA06000171A (en) | Tri-state integer cycle modulation. | |
| CN105978595B (en) | Multimode reception device, multimode sending device and multimode receiving/transmission method | |
| CN206195767U (en) | SPI interface thing networking wireless transceiver based on lora modulation mode | |
| CN111323649B (en) | Microwave photon broadband spectrum measuring method and device | |
| CN105100968A (en) | Digital intercom system based on MPPSK (M-ary Phase Position Shift Keying) modulation | |
| CN109889269A (en) | A kind of radiofrequency signal generation system and method | |
| CN108040025A (en) | Laser ultra-wideband data demodulating system between star | |
| CN202998093U (en) | Bifrequency power line carrier communication apparatus | |
| CN207410317U (en) | A kind of noise suppression circuit for RF switch | |
| CN204652378U (en) | A kind of microwave receiver | |
| Kuyumani et al. | Communication technologies for efficient energy management in smart grid | |
| KR100587015B1 (en) | Data transceiver using a saw filter | |
| CN104851272B (en) | Miniaturized high-speed number for state's net II type concentrators passes communication module | |
| CN107294551A (en) | Anti-interference method, unit and system | |
| CN105577237B (en) | A kind of modulation-demo-demodulation method and chip for low-voltage power line carrier communication system | |
| CN204539133U (en) | Remove the FH building-net ultra-broadband digital receiver of multi-access inference | |
| CN104813583B (en) | Orthogonal mixer device |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190108 |
|
| WD01 | Invention patent application deemed withdrawn after publication |