CN106412354A - Information transmission equipment and method - Google Patents
Information transmission equipment and method Download PDFInfo
- Publication number
- CN106412354A CN106412354A CN201610884851.6A CN201610884851A CN106412354A CN 106412354 A CN106412354 A CN 106412354A CN 201610884851 A CN201610884851 A CN 201610884851A CN 106412354 A CN106412354 A CN 106412354A
- Authority
- CN
- China
- Prior art keywords
- signal
- different passages
- analogue signal
- different
- multiple signals
- 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
- H04B3/02—Details
- H04B3/36—Repeater circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention provides information transmission equipment and method. The information transmission method comprises the following steps: modulating code streams of information to a plurality of different frequency bands through frequencies, and filtering the frequency bands in order to obtain a plurality of analogue signals of different frequencies; amplifying the analogue signals on different channels respectively; coupling the amplified analogue signals to a covered wire to perform transmission; receiving an analogue signal transmitted by the covered wire, and separating the analogue signal into a plurality paths of signals; amplifying the separated paths of signals on different channels; trapping the amplified paths of signals on different channels in order to filter signals of interference frequency bands; performing band-pass filtering on the plurality of paths of signals on the different channels in order to separate out a plurality of signals of different frequency bands; and converting the separated signals into digital signals on the different channels in order to realize demodulation of the signals. Through adoption of the information transmission equipment and method, multi-band and high-bandwidth long-distance transmission of information can be realized through the covered wire.
Description
Technical field
The present invention relates to a kind of information transmission technology, more particularly, to a kind of information transmission equipment and method.
Background technology
With the development of coating line technology, ADSL (Asymmetric Digital Subscriber Line, asymmetric number
Word subscribers' line) technology has been popularized, but ADSL technical transmission distance usually 2-3 kilometer.Needing to realize farther distance
Transmission when, the covered wire using conventional art then needs multiple relayings.In ratio under relatively rugged environment, the energy of relaying is by electricity
Providing, battery needed to be changed after a period of time, thus bringing great difficulty to maintenance in pond.
Content of the invention
The present invention is directed to the problem that prior art exists, and its object is to provide a kind of information transmission equipment and method, makes
Multiband, the long-distance transmissions of high bandwidth of information must be can achieve by a covered wire.
For achieving the above object, the invention provides a kind of information transmission equipment, including：Frequency modulation unit, for inciting somebody to action
The code stream of information passes through frequency modulation(PFM) to multiple different frequency ranges, and each frequency range is filtered to obtain the simulation of multiple different frequencies
Signal；Amplifying circuit, for being amplified respectively on different passages to above-mentioned analogue signal；N covers 1 transformator, for inciting somebody to action
The analogue signal of above-mentioned amplification is transmitted coupled to covered wire；1 set of n transformator, for receiving the simulation letter of covered wire transmission
Number, and this analogue signal is separated into multiple signals；Amplifying unit, for by above-mentioned detached multiple signals in different passages
On be amplified；Wave trap, for carrying out trap to the multiple signals amplifying on different passages, with filtering interfering frequency range
Signal；Band filter, for carrying out bandpass filtering to multiple signals on different passages, to isolate multiple different frequency ranges
Signal；And analog-to-digital conversion device, for the signal isolated being converted into digital signal to realize signal on different passages
Demodulation.
As a further improvement on the present invention, enlargement ratio root when described each analogue signal is amplified on different passages
To determine according to the attenuation degree in analogue signal transmitting procedure, so that the sinusoidal wave amplitude of each analogue signal of 1 set of n transformator reception
Degree difference is in default value.
As a further improvement on the present invention, described amplifying unit includes one-level amplifying unit and two grades of amplifying units；One
Level amplifying unit, for by above-mentioned via the detached multiple signals of analogue signal on different passages respectively according to default multiplying power
Carry out one-level amplification；And two grades of amplifying units, on different passages to the signal after above-mentioned trap according to predetermined multiplying power
Carry out two grades of amplifications.
As a further improvement on the present invention, described analog-to-digital conversion device is high sampling rate chip.
For achieving the above object, the invention provides a kind of information transferring method, run on transmitting terminal, walk including following
Suddenly：The code stream of information is passed through frequency modulation(PFM) to multiple different frequency ranges, and each frequency range is filtered to obtain multiple different frequencies
Analogue signal；Above-mentioned analogue signal is amplified on different passages respectively；Analogue signal coupling by above-mentioned amplification
It is transmitted to covered wire；And when receiving terminal receives the analogue signal of covered wire transmission, this analogue signal is divided by receiving terminal
From for multiple signals, above-mentioned detached multiple signals are amplified on different passages, to amplification on different passages
Multiple signals carry out trap with the signal of filtering interfering frequency range, different passages is carried out to multiple signals bandpass filtering with
Isolate the signal of multiple different frequency ranges, and on different passages, the signal isolated is converted into digital signal to realize letter
Number demodulation.
As a further improvement on the present invention, enlargement ratio root when described each analogue signal is amplified on different passages
To determine according to the attenuation degree in analogue signal transmitting procedure, so that the sinusoidal amplitude of each analogue signal of receiving terminal reception is poor
Different in default value.
For achieving the above object, the invention provides a kind of information transferring method, run on receiving terminal, walk including following
Suddenly：Receive the analogue signal of covered wire transmission, and this analogue signal is separated into multiple signals；The simulation of described covered wire transmission
Signal is, by transmitting terminal, the code stream of information is passed through frequency modulation(PFM) to multiple different frequency ranges, each frequency range is filtered multiple to obtain
The analogue signal of different frequency, is amplified on different passages respectively to above-mentioned analogue signal, and the mould by above-mentioned amplification
Intend signal to be transmitted to receiving terminal coupled to covered wire；Above-mentioned detached multiple signals are put on different passages
Greatly；Different passages carries out trap with the signal of filtering interfering frequency range to the multiple signals amplifying；On different passages
Multiple signals are carried out with bandpass filtering to isolate the signal of multiple different frequency ranges；And by the letter isolated on different passages
Number it is converted into digital signal to realize the demodulation of signal.
As a further improvement on the present invention, detached multiple signals are amplified on different passages including below
Step：Carry out above-mentioned one-level according to default multiplying power on different passages via the detached multiple signals of analogue signal respectively and put
Greatly；And on different passages, according to predetermined multiplying power, two grades of amplifications are carried out to the signal after above-mentioned trap.
As a further improvement on the present invention, in the demodulation realizing signal, led in different using high sampling rate chip
On road, altofrequency sampling is carried out to the signal isolated.
Using information transmission equipment of the present invention and method, it is possible to use multiple analog channels, for different passages
Different frequency range filter respectively, finally the analogue signal of different passages is coupled to same covered wire, solves tradition coating
Line transmission belt width, transmission speed slow and cannot long-distance transmissions the problems such as；Receiving terminal receives the analogue signal of different frequency range,
It is demodulated after subchannel amplification, filtering, analog digital conversion, alleviate the pressure of conventionally employed single passage processing data,
Sampled using the modulus conversion chip of high sampling rate simultaneously, improve the accuracy of demodulation.
Brief description
Fig. 1 is the construction module schematic diagram of present pre-ferred embodiments information transmission equipment；
Fig. 2 is the connection exemplary plot of present pre-ferred embodiments information transmission equipment；
Fig. 3 is the FB(flow block) of present pre-ferred embodiments information transferring method.
Main element symbol description
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Specific embodiment
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments are not
Limit the present invention, the conversion in structure or function that those of ordinary skill in the art is made according to these embodiments is all wrapped
Containing within the scope of the present invention.
It show the construction module schematic diagram of present pre-ferred embodiments information transmission equipment, this information transfer refering to Fig. 1
Equipment realizes the transmission by transmitting terminal to receiving terminal for the information by covered wire.This information includes, but are not limited to, text, sound
Video file.This information transmission equipment 1000 includes transmitting terminal 100, covered wire 200 and receiving terminal 300.Described transmitting terminal 100 leads to
Cross covered wire 200 to be attached with receiving terminal 300.
Described transmitting terminal 100 includes, but not limited to frequency modulation unit 10, amplifying circuit 11 and n and covers 1 transformator 12.Should
Frequency modulation unit 10 is used for for the code stream of information passing through frequency modulation(PFM) to multiple different frequency ranges, and each frequency range is filtered to obtain
Obtain the analogue signal of multiple different frequencies.Described analogue signal is to have the sine wave of different center frequency, such as n simulation letter
Number, frequency f centered on itc1、fc2、fc3、……、fcnSine wave.Each frequency range corresponds to an analog channel.
Described amplifying circuit 11 is used for the analogue signal of above-mentioned difference passage is amplified respectively.Each analogue signal is being put
Enlargement ratio when big determines according to the attenuation degree in analogue signal transmitting procedure, to ensure each analogue signal in receiving terminal
300 sinusoidal amplitude difference is in default value.This default value to be preset to the demodulation accuracy of analogue signal by user.Cause
The mid frequency of different analog channel settings is different, and the sine wave of different frequency is decayed difference in transmitting procedure, thus
The signal intensity leading to the analogue signal of receiving terminal 300 reception has differences；Therefore decay in transmitting procedure big sending
Amplification 100 is adjusted to big multiplying power by end, to ensure the sinusoidal amplitude difference of different frequency that receiving terminal 300 receives in institute
State in default value, be simulated the process of signal beneficial to receiving terminal 300.
Described n set 1 transformator 12 is used for being transmitted the analogue signal of above-mentioned amplification coupled to covered wire 200.This mould
Intend the coated line of signal 200 to be transmitted to receiving terminal 300 by transmitting terminal 100.
Above-mentioned for information from receiving terminal 100 to the transmitting procedure of covered wire 200.In this transmitting procedure, Information Pull is many
Individual analog channel, the different frequency range for different passages filters respectively, and the analogue signal of different passages is coupled to same quilt
Cover line, solve covered wire 200 transmission bandwidth and transmission speed restriction the problems such as, and can achieve the long-distance transmissions of information.
Described receiving terminal 300 includes, but not limited to 1 set of n transformator 30, amplifying unit 31, wave trap 32, bandpass filtering
Device 33, analog-digital converter (Analog to Digital Converter, abbreviation A/D converter or ADC) 34.
Described 1 set of n transformator 30 is used for receiving the analogue signal of covered wire 200 transmission, and this analogue signal is separated into
Multiple signals.For example, this 1 set of n transformator 30, by the sine wave of the different frequency being superimposed receiving, is filtered through 1 set of n
Ripple device is divided into n road.
Described amplifying unit 31 includes one-level amplifying unit 1 and two grades of amplifying units 2.Described one-level amplifying unit 1 is used for
Above-mentioned detached multiple signals are carried out one-level amplification according to default multiplying power on different passages respectively.This default multiplying power according to
The fade performance of covered wire 200 is presetting.After the transmission of remote covered wire 200, the signal of above-mentioned multiple signals is strong
Degree is weak, after one-level is amplified, is conducive to follow-up Signal separator.
The multiple signals that described wave trap 32 is used on different passages, one-level being amplified carry out trap, with filtering interfering
The signal of frequency range.This wave trap 32 is via trap by the letter of the unwanted interference band amplifying through one-level in the signal of Hou Ge road
Number filtered, to reduce interference when garbage signal filters to follow-up band filter 33.
Described two grades of amplifying units 2 are used on different passages, the signal after above-mentioned trap being carried out according to predetermined multiplying power
Two grades of amplifications.This default multiplying power amplitude range according to required by analog-digital converter 34 is presetting.
Signal after described band filter 33 is used on different passages, two grades being amplified carries out bandpass filtering, to divide
Separate out the signal of multiple different frequency ranges.In this preferred embodiment, band filter 33 is according to different mid frequencyes to each frequency
The signal of section carries out bandpass filtering, and bandpass filtering can allow the signal of special frequency channel to pass through and shield the letter of other frequency ranges simultaneously
Number.Multiple signals after described two grades of amplifications carry out after bandpass filtering via the band filter 33 on different passages, separable
Go out the signal of multiple different frequency ranges.For example, n road signal is carried out bandpass filtering respectively, the frequency range of each signal isolated is：The
One tunnel is with fc1Centered on frequency, the second tunnel is with fc2Centered on frequency ... n-th tunnel with fcnMid frequency.By band filter
33 bandpass filtering can make analog-to-digital conversion device 34 receive the signal of good quality to carry out signal processing.
Described analog-to-digital conversion device 34 is used for, on different passages, the signal isolated is converted into digital signal to realize
The demodulation of signal.In this preferred embodiment, described analog-to-digital conversion device 34 is high sampling rate chip.Described analog-to-digital conversion device 34 exists
When carrying out signal demodulation, altofrequency sampling is carried out using high sampling rate chip.Because transmitting terminal 100 adopts frequency modulating technology,
Therefore some passages may transmit in altofrequency, through the sine wave of long-distance transmissions, its signal when receiving terminal 300 receives
Intensity is weak, by improving the sample rate of analog-to-digital conversion device 34, then can recover the sine wave of respective frequencies.
Above-mentioned receiving terminal 300 receives the analogue signal of different frequency range, after subchannel amplification, filtering, digital-to-analogue conversion
It is demodulated.On the one hand alleviate the pressure of conventionally employed single passage processing data, on the other hand adopt the mould of high sampling rate
Number converter, improves the accuracy of demodulation.
It show the connection exemplary plot of present pre-ferred embodiments information transmission equipment refering to Fig. 2.
The code stream of information obtains the sine wave with different center frequency after frequency modulation unit 10 modulation, sine wave
Mid frequency is fc1、fc2、fc3、……、fcn, amplifying circuit 11 is amplified to each sine wave subchannel, and n set 1 transformator 12 will
The sine wave of above-mentioned amplification is transmitted coupled to covered wire 200.1 set of n transformator 30 receives being superimposed upon of covered wire 200 transmission
The sine wave of different frequency together, and it is separated into n road signal.One-level amplifying unit 1 will be above-mentioned on different passages
Detached n road signal carries out one-level amplification, and the n road signal that wave trap 32 amplifies to one-level on different passages carries out trap,
With the signal of filtering interfering frequency range, two grades of amplifying units 2 on different passages to trap after n road signal carry out two grades and put
Greatly, each sine wave after band filter 33 amplifies to two grades on different passages carries out bandpass filtering to isolate n not
With the sine wave of frequency range, the mid frequency of this sine wave isolated is fc1、fc2、fc3、……、fcn, analog-to-digital conversion device 34 is not
On same passage, this each sine wave isolated is demodulated.
It show the FB(flow block) of present pre-ferred embodiments information transferring method refering to Fig. 3.
Step S10, the code stream of information is passed through frequency modulation(PFM) to multiple different frequency ranges by frequency modulation unit 10, and to each
Frequency range filters to obtain the analogue signal of multiple different frequencies.Described analogue signal is to have the sine wave of different center frequency,
Such as n analogue signal, frequency f centered on itc1、fc2、fc3、……、fcnSine wave.The corresponding simulation of each frequency range is logical
Road.
Step S12, amplifying circuit 11 is amplified respectively to the analogue signal of above-mentioned difference passage.Each analogue signal is being put
Enlargement ratio when big determines according to the attenuation degree in analogue signal transmitting procedure, to ensure each analogue signal in receiving terminal
300 sinusoidal amplitude difference is in default value.This default value to be preset to the demodulation accuracy of analogue signal by user.
Step S14, n covers 1 transformator 12 and is transmitted the analogue signal of above-mentioned amplification coupled to covered wire 200.This mould
Intend the coated line of signal 200 to be transmitted to receiving terminal 300 by transmitting terminal 100.
Step S16,1 set of n transformator 30 receives the analogue signal of covered wire 200 transmission, and this analogue signal is separated into
Multiple signals.For example, this 1 set of n transformator 30, by the sine wave of the different frequency being superimposed receiving, is filtered through 1 set of n
Ripple device is divided into n road.
Step S18, one-level amplifying unit 1 by above-mentioned detached multiple signals on different passages respectively according to default times
Rate carries out one-level amplification.This default multiplying power is preset according to the fade performance of covered wire 200.
Step S20, the multiple signals that wave trap 32 amplifies to one-level on different passages carry out trap, with filtering interfering
The signal of frequency range.This wave trap 32 is via trap by the letter of the unwanted interference band amplifying through one-level in the signal of Hou Ge road
Number filtered, to reduce interference when garbage signal filters to follow-up band filter 33.
Step S22, two grades of amplifying units 2 are carried out according to predetermined multiplying power to the signal after above-mentioned trap on different passages
Two grades of amplifications.This default multiplying power amplitude range according to required by analog-digital converter 34 is presetting.
Step S24, the signal after band filter 33 amplifies to two grades on different passages carries out bandpass filtering, to divide
Separate out the signal of multiple different frequency ranges.In this preferred embodiment, band filter 33 is according to different mid frequencyes to each frequency
The signal of section carries out bandpass filtering, and bandpass filtering can allow the signal of special frequency channel to pass through and shield the letter of other frequency ranges simultaneously
Number.Multiple signals after described two grades of amplifications carry out after bandpass filtering via the band filter 33 on different passages, separable
Go out the signal of multiple different frequency ranges.For example, n road signal is carried out bandpass filtering respectively, the frequency range of each signal isolated is：The
One tunnel is with fc1Centered on frequency, the second tunnel is with fc2Centered on frequency ... n-th tunnel with fcnMid frequency.By band filter
33 bandpass filtering can make analog-to-digital conversion device 34 receive the signal of good quality to carry out signal processing.
Step S26, the signal isolated is converted into digital signal to realize on different passages by analog-to-digital conversion device 34
The demodulation of signal.In this preferred embodiment, described analog-to-digital conversion device 34 is high sampling rate chip.Described analog-to-digital conversion device 34 exists
When carrying out signal demodulation, altofrequency sampling is carried out using high sampling rate chip.
It should be understood that although this specification is been described by according to embodiment, but not each embodiment only comprises one
Individual independent technical scheme, only for clarity, those skilled in the art should will say this narrating mode of description
As an entirety, the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment understanding.
The a series of detailed description of those listed above is only for the feasibility embodiment of the present invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included within the scope of the present invention.
Claims (9)
1. a kind of information transmission equipment is it is characterised in that include：
Frequency modulation unit, for the code stream of information is passed through frequency modulation(PFM) to multiple different frequency ranges, and filters to each frequency range
To obtain the analogue signal of multiple different frequencies；
Amplifying circuit, for being amplified respectively on different passages to above-mentioned analogue signal；
N covers 1 transformator, for being transmitted the analogue signal of above-mentioned amplification coupled to covered wire；
1 set of n transformator, for receiving the analogue signal of covered wire transmission, and this analogue signal is separated into multiple signals；
Amplifying unit, for being amplified above-mentioned detached multiple signals on different passages；
Wave trap, for carrying out trap to the multiple signals amplifying on different passages, with the signal of filtering interfering frequency range；
Band filter, for carrying out bandpass filtering to multiple signals on different passages, to isolate multiple different frequency ranges
Signal；And
Analog-to-digital conversion device, for being converted into digital signal to realize the solution of signal by the signal isolated on different passages
Adjust.
2. information transmission equipment according to claim 1 is it is characterised in that described each analogue signal is on different passages
Enlargement ratio during amplification determines according to the attenuation degree in analogue signal transmitting procedure, so that 1 set of n transformator reception is each
The sinusoidal amplitude difference of analogue signal is in default value.
3. information transmission equipment according to claim 1 is it is characterised in that described amplifying unit includes one-level amplifying unit
And two grades of amplifying units；
One-level amplifying unit, for by above-mentioned via the detached multiple signals of analogue signal on different passages respectively according to pre-
If multiplying power carries out one-level amplification；And
Two grades of amplifying units, put for carrying out two grades to the signal after above-mentioned trap according to predetermined multiplying power on different passages
Greatly.
4. information transmission equipment according to claim 1 is it is characterised in that described analog-to-digital conversion device is high sampling rate core
Piece.
5. a kind of information transferring method, runs on transmitting terminal it is characterised in that comprising the steps：
The code stream of information is passed through frequency modulation(PFM) to multiple different frequency ranges, and each frequency range is filtered to obtain multiple different frequencies
Analogue signal；
Above-mentioned analogue signal is amplified on different passages respectively；
The analogue signal of above-mentioned amplification is transmitted coupled to covered wire；And
When receiving terminal receives the analogue signal of covered wire transmission, this analogue signal is separated into multiple signals by receiving terminal, will
Above-mentioned detached multiple signals are amplified on different passages, on different passages, the multiple signals amplifying are fallen into
Ripple, with the signal of filtering interfering frequency range, carries out bandpass filtering to isolate multiple different frequencies on different passages to multiple signals
The signal of section, and on different passages, the signal isolated is converted into digital signal to realize the demodulation of signal.
6. information transferring method according to claim 5 is it is characterised in that described each analogue signal is on different passages
Enlargement ratio during amplification determines according to the attenuation degree in analogue signal transmitting procedure, so that each simulation that receiving terminal receives
The sinusoidal amplitude difference of signal is in default value.
7. a kind of information transferring method, runs on receiving terminal it is characterised in that comprising the steps：
Receive the analogue signal of covered wire transmission, and this analogue signal is separated into multiple signals；The mould of described covered wire transmission
Intending signal is, by transmitting terminal, the code stream of information is passed through frequency modulation(PFM) to multiple different frequency ranges, each frequency range is filtered many to obtain
The analogue signal of individual different frequency, is amplified on different passages respectively to above-mentioned analogue signal, and by above-mentioned amplification
Analogue signal is transmitted to receiving terminal coupled to covered wire；
Above-mentioned detached multiple signals are amplified on different passages；
Different passages carries out trap with the signal of filtering interfering frequency range to the multiple signals amplifying；
Different passages carries out bandpass filtering to isolate the signal of multiple different frequency ranges to multiple signals；And
The signal isolated is converted into digital signal to realize the demodulation of signal by different passages.
8. information transferring method according to claim 7 is it is characterised in that by detached multiple signals in different passages
On be amplified comprising the following steps：
Carry out above-mentioned one-level according to default multiplying power on different passages via the detached multiple signals of analogue signal respectively and put
Greatly；And
Different passages carries out two grades of amplifications to the signal after above-mentioned trap according to predetermined multiplying power.
9. information transferring method according to claim 7 is it is characterised in that in the demodulation realizing signal, adopted using height
Sample rate chip carries out altofrequency sampling to the signal isolated on different passages.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884851.6A CN106412354A (en) | 2016-10-10 | 2016-10-10 | Information transmission equipment and method |
| PCT/CN2016/102755 WO2018068340A1 (en) | 2016-10-10 | 2016-10-20 | Information transmission device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610884851.6A CN106412354A (en) | 2016-10-10 | 2016-10-10 | Information transmission equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106412354A true CN106412354A (en) | 2017-02-15 |
Family
ID=59228520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610884851.6A Pending CN106412354A (en) | 2016-10-10 | 2016-10-10 | Information transmission equipment and method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106412354A (en) |
| WO (1) | WO2018068340A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888276A (en) * | 2017-11-14 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of Multiband-multimode modulation-demodulation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1198064A2 (en) * | 2000-10-13 | 2002-04-17 | Brookhaven Science Associates | Wide tracking range, low jitter phase lock loop |
| CN1394081A (en) * | 2001-06-22 | 2003-01-29 | 国家广播电影电视总局广播科学研究院 | Method for dividing frequency band and its modulation |
| CN202340257U (en) * | 2011-11-28 | 2012-07-18 | 烟台北方星空自控科技有限公司 | Wire-based remote data-speech-transmission apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1195200C (en) * | 2002-01-21 | 2005-03-30 | 南京航空航天大学 | Rotary non-contact bidrectional synchronous signal and power transmitting system and method |
-
2016
- 2016-10-10 CN CN201610884851.6A patent/CN106412354A/en active Pending
- 2016-10-20 WO PCT/CN2016/102755 patent/WO2018068340A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1198064A2 (en) * | 2000-10-13 | 2002-04-17 | Brookhaven Science Associates | Wide tracking range, low jitter phase lock loop |
| CN1394081A (en) * | 2001-06-22 | 2003-01-29 | 国家广播电影电视总局广播科学研究院 | Method for dividing frequency band and its modulation |
| CN202340257U (en) * | 2011-11-28 | 2012-07-18 | 烟台北方星空自控科技有限公司 | Wire-based remote data-speech-transmission apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107888276A (en) * | 2017-11-14 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of Multiband-multimode modulation-demodulation device |
| CN107888276B (en) * | 2017-11-14 | 2020-05-08 | 中国电子科技集团公司第五十四研究所 | Multi-frequency band multi-mode modulation and demodulation device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018068340A1 (en) | 2018-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103259754B (en) | A kind of digital front-end system and its implementation for power line carrier communication | |
| CN103595688B (en) | Visible light communication multiple access method based on no-load Amplitude Phase Modulation and system | |
| WO2004059934A8 (en) | Radio base station receiver having digital filtering and reduced sampling frequency | |
| US8665695B2 (en) | Methods for transceiving data in multi-band orthogonal frequency division multiple access communications system and communications apparatuses utilizing the same | |
| CN202050503U (en) | Multichannel uncompressed digital video optical fiber transmission device | |
| WO2005067246A3 (en) | Quasi-parallel multichannel receivers for wideband orthogonal frequency division multiplexed communications and associated methods | |
| CN110350982A (en) | One kind is from coherent signal receiving/transmission method and device | |
| CN107359905A (en) | A kind of digital front-end and frame detection technique for frequency division power line carrier communication | |
| CN101488795B (en) | Optical fiber digital transmission method applied on straight-forward station | |
| CN101931424A (en) | Short-wave radio frequency digital processing module | |
| CN105933070B (en) | The transmission system of radiofrequency signal receives system, receive-transmit system and receiving/transmission method | |
| CN110768737A (en) | Analog-digital mixed amplitude modulation broadcasting system based on MPPSK modulation | |
| CN106817135B (en) | The beechnut realized based on software and radio technique | |
| CN106412354A (en) | Information transmission equipment and method | |
| CN104935371A (en) | High-speed orthogonal frequency division multiplexing (OFDM) wireless relay transmission system | |
| WO2014117537A1 (en) | Apparatus, method, electronic device, and communications system for transmitting signal between devices | |
| CN104836762B (en) | General 4FSK modems and the digital walkie-talkie for supporting multi-standard | |
| CN101132249A (en) | Broadband multi-carrier frequency receiver without intermediate-frequency SAW filter | |
| CN201282455Y (en) | Digital fiber-optical discharging-directly machine system | |
| CN207677911U (en) | The Transmission system of multi-channel video signal and audio signal | |
| CN113765545B (en) | Bluetooth receiver demodulation system and method | |
| CN108512788A (en) | A kind of PCM modules based on noise shaping for digital mobile forward pass link | |
| CN102196111B (en) | Short-wave two-path modulator-demodulator | |
| CN113726445A (en) | Modulation signal generation method and terahertz wireless transmission method and system | |
| US9876626B2 (en) | Microwave backhaul system having quadruple capacity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170215 |
|
| RJ01 | Rejection of invention patent application after publication |