CN109889269A - A kind of radiofrequency signal generation system and method - Google Patents
A kind of radiofrequency signal generation system and method Download PDFInfo
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- CN109889269A CN109889269A CN201811592491.8A CN201811592491A CN109889269A CN 109889269 A CN109889269 A CN 109889269A CN 201811592491 A CN201811592491 A CN 201811592491A CN 109889269 A CN109889269 A CN 109889269A
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Abstract
The embodiment of the invention provides a kind of radiofrequency signals to generate system and method, which includes frequency device for selection controlling, frequency comb generating device and radio frequency signal generating device, the bandwidth of network where available terminal device；According to the size of acquired bandwidth, the target frequency for controlling generated signal frequency is determined；The first continuous optical signal is generated, and is modulated generation frequency comb using phase and intensity of the target frequency to the described first continuous optical signal；The frequency comb is filtered according to preset first frequency range, filters out the signal in the frequency comb to be generated other than first frequency range；Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the signal of the target frequency is selected in obtained radiofrequency signal, as radiofrequency signal to be generated.Using scheme provided in an embodiment of the present invention, frequency spectrum resource utilization rate can be improved.
Description
Technical field
The present invention relates to fields of communication technology, generate system and method more particularly to a kind of radiofrequency signal.
Background technique
Light carries communication mode of the radio communication as a kind of combination fiber optic communication and radio communication, is mobile forward pass optical-fiber network
In most important signal transmission form.Light carries radio communication and is carried by will obtain radio frequency pair on modulates baseband signals to radiofrequency signal
Wave signal, then radio frequency subcarrier signal is modulated on optical signal and obtains light and carries baseband signal, then using optical fiber link as
Light carries the transmission medium of baseband signal, and light is carried base band signal transmission to base station.Since fiber optic communication has, capacity is big, is lost
The advantages such as flexible and efficient that are low, being highly resistant to the characteristics such as electromagnetic interference and radio communication, thus light carry radio communication gradually at
To solve bandwidth, capacity and the key technology of transmission in future 5G forward pass optical-fiber network.
Frequency spectrum is always scarce resource, therefore proposes full range access to meet the access bandwidth of the following 5G wireless communication.Entirely
Frequency access is related to the high-frequency band of 6GHz low frequency band below and 6GHz or more, and wherein the former is the core frequency band of 5G, is used for
Seamless coverage, the latter are to realize high data rate in hot spot region using supplement frequency range.But in practical applications, most of movements
The radiofrequency signal of actual bearer is concentrated mainly on the frequency range lower than 6GHz in forward pass optical-fiber network, and frequency spectrum resource utilization rate is low.
Summary of the invention
The embodiment of the present invention is designed to provide a kind of radiofrequency signal generation system and method, improves frequency spectrum money to realize
Source utilization rate.Specific technical solution is as follows:
The one side that the present invention is implemented provides a kind of radiofrequency signal generation system, the system comprises: frequency selection control
Device processed, frequency comb generating device and radio frequency signal generating device, wherein
The frequency device for selection controlling, for the bandwidth of network where obtaining terminal device, according to acquired bandwidth
Size determines the target frequency for controlling generated signal frequency, and the target frequency is sent to the frequency comb and is occurred
Device, and the target frequency is sent to the radio frequency signal generating device；
The frequency comb generating device receives the frequency device for selection controlling hair for generating the first continuous optical signal
The target frequency sent is modulated generation using phase and intensity of the target frequency to the described first continuous optical signal
Frequency comb, and the frequency comb is sent to the radio frequency signal generating device；
The radio frequency signal generating device, the frequency comb and the frequency sent for receiving the frequency comb generating device
The target frequency that device for selection controlling is sent, is filtered the frequency comb according to preset first frequency range, filters
Except in the frequency comb in first frequency range in addition to signal, to filtered frequency comb carry out beat frequency obtain radiofrequency signal,
The signal that the target frequency is selected in obtained radiofrequency signal, as radiofrequency signal to be generated.
Optionally, first continuous wave laser is believed for generating the first continuous optical signal, and by the described first continuous light
Number it is sent to first Mach of increasing Dare modulator；
The sine wave signal generator, the target frequency sent for receiving the frequency device for selection controlling,
The sine wave signal that frequency is the target frequency is generated, the sine wave signal is sent to first Mach of increasing Dare tune
Device processed and the signal delay device；
First Mach of increasing Dare modulator, described first for receiving the first continuous wave laser transmission are continuous
The sine wave signal that optical signal and the sine wave signal generator are sent, according to the frequency of the sine wave signal to institute
The phase and intensity for stating the first continuous optical signal are modulated, and the modulated first continuous optical signal is sent to the polarization
Controller；
The Polarization Controller, modulated first for receiving first Mach of increasing Dare modulator transmission are continuous
Optical signal, and polarization manipulation is carried out to the phase of the modulated first continuous optical signal, by the first continuous light after polarization manipulation
Signal is sent to second Mach of increasing Dare modulator；
The signal delay device, the sine wave signal sent for receiving the sine wave signal generator, and
After reaching the scheduled time, the sine wave signal is sent to second Mach of increasing Dare modulator；
Second Mach of increasing Dare modulator, first after polarization manipulation for receiving the Polarization Controller transmission
The sine wave signal that continuous optical signal and the signal delay device are sent, according to the frequency of the sine wave signal to polarization
The phase and intensity of treated the first continuous optical signal are modulated generation frequency comb, and the frequency comb are sent to described
Radio frequency signal generating device.
Optionally, the radio frequency signal generating device includes: optical band pass filter and the first photodetector, wherein
The optical band pass filter, the frequency comb sent for receiving the frequency comb generating device, according to preparatory
First frequency range of setting is filtered the frequency comb, filters out the signal in the frequency comb other than first frequency range,
Filtered frequency comb is sent to first photodetector；
First photodetector, the filtered frequency comb sent for receiving the optical band pass filter, to filter
Frequency comb after wave carries out beat frequency and handles to obtain radiofrequency signal, and obtained radiofrequency signal is sent to the frequency selection and is opened
It closes；
The frequency selective switch, for receiving the target frequency that the frequency selection controller is sent and described the
One photodetector send radiofrequency signal, the signal of the target frequency is selected in the radiofrequency signal received, as to
Generate radiofrequency signal.
Optionally, the system also includes electric signal modulating device and signal modulation device of optical, wherein the radio frequency
Signal generation device is also used to for the radiofrequency signal to be sent to the electric signal modulating device；
The electric signal modulating device, for obtaining the baseband signal and the reception radio frequency that are sent to the terminal device
The radiofrequency signal that signal generation device is sent will obtain radio frequency pair load on the modulates baseband signals to the radiofrequency signal
Wave signal, and the radio frequency subcarrier signal is sent to the signal modulation device of optical；
The signal modulation device of optical, the radio frequency subcarrier letter sent for receiving the electric signal modulating device
Number, the second continuous optical signal is generated, according to the frequency of the radio frequency subcarrier signal to the phase of the described second continuous optical signal
It is modulated to obtain light load baseband signal with intensity.
Optionally, the system also includes optical fiber link, optical signal demodulation device and electric signal demodulating equipments, wherein
The signal modulation device of optical is also used to for light load baseband signal being transmitted to by the optical fiber link described
Optical signal demodulation device；
The optical signal demodulation device carries baseband signal by the light that the optical fiber link transmits for receiving, right
The light carries baseband signal and is demodulated to obtain the radio frequency subcarrier signal, by the power amplification of the radio frequency subcarrier signal
To target power, and the signal in the radio frequency subcarrier signal after power amplification other than preset second frequency range is filtered out,
Filtered radio frequency subcarrier signal is sent to the electric signal demodulator；
The electric signal demodulating equipment believes the radio frequency subcarrier for the radio frequency subcarrier signal after accepting filter
It number is demodulated to obtain the baseband signal.
Optionally, the signal modulation device of optical includes: that the second continuous wave laser and third Mach increase Dare modulator,
In,
Second continuous wave laser, for generating the second continuous optical signal, and by the generated second continuous optical signal
It is sent to the third Mach and increases Dare modulator；
The third Mach increases Dare modulator, the second continuous light letter sent for receiving second continuous wave laser
Number and the electric signal modulating device send the radio frequency subcarrier signal, according to the frequency pair of the radio frequency subcarrier signal
The phase and intensity of the second continuous optical signal are modulated to obtain light load baseband signal.
Optionally, the optical signal demodulation device includes: the second photodetector and power amplifier, wherein
Second photodetector carries baseband signal by the light that the optical fiber link transmits for receiving, right
The light carries baseband signal and is demodulated to obtain the radio frequency subcarrier signal, and the radio frequency subcarrier signal is sent to institute
State power amplifier；
The power amplifier, the radio frequency subcarrier signal sent for receiving second photodetector will
Radio frequency subcarrier signal after power amplification is sent to institute to target power by the power amplification of the radio frequency subcarrier signal
State electric bandpass filter；
The electricity bandpass filter, for receiving the amplified radio frequency subcarrier letter of rate that the power amplifier is sent
Number, the signal in the radio frequency subcarrier signal after filtering out power amplification other than preset second frequency range, and will be after filtering
Radio frequency subcarrier signal be sent to the electric signal demodulating equipment.
The another aspect that the present invention is implemented additionally provides a kind of radiofrequency signal generation method, which comprises
The bandwidth of network where obtaining terminal device；
According to the size of acquired bandwidth, the target frequency for controlling generated signal frequency is determined；
The first continuous optical signal is generated, and using the target frequency to the phase and intensity of the described first continuous optical signal
It is modulated generation frequency comb；
The frequency comb is filtered according to preset first frequency range, is filtered out in the frequency comb described first
Signal other than frequency range；
Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the target is selected in obtained radiofrequency signal
The signal of frequency, as the radiofrequency signal to be generated.
The another aspect that the present invention is implemented additionally provides a kind of electronic equipment, including processor, communication interface, memory
And communication bus, wherein processor, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes radiofrequency signal generation method described above.
The another aspect that the present invention is implemented, additionally provides a kind of computer readable storage medium, described computer-readable to deposit
Instruction is stored in storage media, when run on a computer, so that computer executes radiofrequency signal described above and generates
Method.
The another aspect that the present invention is implemented additionally provides a kind of computer program product comprising instruction, when it is being calculated
When running on machine, radiofrequency signal generation method provided in an embodiment of the present invention is realized.
Radiofrequency signal provided in an embodiment of the present invention generates system and method, the band of network where available terminal device
It is wide；It generates to be used to indicate according to the size of acquired bandwidth and generates the frequency control instruction of preset frequency frequency comb and be used to indicate choosing
Select the frequency selection instruction of target radio frequency signal；The first continuous optical signal is generated, and using indicated by the frequency control instruction
Frequency generation frequency comb is modulated to the phase and intensity of the described first continuous optical signal；According to preset first frequency
Section is filtered frequency comb generated, filters out in frequency comb generated other than preset first frequency range
Signal；Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the frequency is selected to select in obtained radiofrequency signal
Select the indicated target radio frequency signal of instruction.It, can be according to net where terminal device using scheme provided in an embodiment of the present invention
The size of the bandwidth of network adjusts the size at frequency comb side frequency generated interval, and by beat frequency technology using generated
Frequency comb generates radiofrequency signal, realize according to the demand of the traffic rate of terminal device using different frequency radiofrequency signal to
Terminal device transmission base band, it is thus possible to improve frequency spectrum resource utilization rate.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram that a kind of radiofrequency signal provided in an embodiment of the present invention generates system；
Fig. 2 is a kind of structural schematic diagram of frequency comb generating device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram that a kind of light provided in an embodiment of the present invention carries RF communication system；
Fig. 4 is a kind of flow diagram of radiofrequency signal generation method provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the structural schematic diagram that a kind of radiofrequency signal provided in an embodiment of the present invention generates system is shown, this is
System includes: frequency device for selection controlling 100, frequency comb generating device 200 and radio frequency signal generating device 300, wherein
Frequency device for selection controlling 100, for the bandwidth of network where obtaining terminal device, according to the big of acquired bandwidth
It is small, it determines the target frequency for controlling generated signal frequency, target frequency is sent to frequency comb generating device 200, and
Target frequency is sent to radio frequency signal generating device 300.
Above-mentioned bandwidth typically refers to data volume transmitted in unit time, the bigger expression transmitted per unit time of bandwidth
Data volume is more, correspondingly, the frequency of the radiofrequency signal for carrying data to be transmitted is also bigger, that is, target frequency is got over
Greatly.
Frequency comb generating device 200 receives frequency device for selection controlling 100 and sends for generating the first continuous optical signal
The target frequency, be modulated generation frequency comb using phase and intensity of the target frequency to the first continuous optical signal, and
Frequency comb is sent to radio frequency signal generating device 300.
In a kind of implementation, the optical power of the first continuous optical signal can be 10dBm, output frequency 193.1THZ.
Radio frequency signal generating device 300, for receiving the frequency comb and frequency selection control of the transmission of frequency comb generating device 200
The target frequency that device 100 processed is sent, is filtered frequency comb according to preset first frequency range, filter out in frequency comb
Signal other than first frequency range carries out beat frequency to filtered frequency comb and obtains radiofrequency signal, in obtained radiofrequency signal
The signal of selection target frequency, as radiofrequency signal to be generated.
The frequency of first frequency range of setting can be target frequency with the centre frequency of the above-mentioned first continuous optical signal, bandwidth
2-3 times.
The radiofrequency signal of multiple and different frequencies can be obtained by carrying out beat frequency to frequency comb, it is then desired in obtained radio frequency letter
It carries out selecting required radiofrequency signal in number, also, the radiofrequency signal due to producing multiple and different frequencies ought be needed to other
Terminal device send baseband signal when, if this production multiple and different frequencies radiofrequency signal exist meet for its
When his terminal device sends the radiofrequency signal of baseband signal, then can directly it be selected in the radiofrequency signal produced, and nothing
It need to recycle and beat frequency is carried out from new production radiofrequency signal to frequency comb.
Referring to fig. 2, a kind of structural schematic diagram of frequency comb generating device 200 provided in an embodiment of the present invention, light are shown
Frequency comb generating device 200 may include: 202, first Mach of the first continuous wave laser 201, sine wave signal generator increasing Dares
Modulator 203, second Mach of increasings Dare modulator 204, signal delay device 205 and Polarization Controllers 206, wherein
First continuous optical signal for generating the first continuous optical signal, and is sent to first by the first continuous wave laser 201
Mach increases Dare modulator 203.
Sine wave signal generator 202 generates frequency for receiving the target frequency of the transmission of frequency device for selection controlling 100
Rate is the sine wave signal of target frequency, and sine wave signal is sent to first Mach of increasing Dare modulator 203 and signal delay
Device 205.
First Mach of increasing Dare modulator 203, for receiving the first continuous optical signal of the first continuous wave laser 201 transmission
The sine wave signal sent with sine wave signal generator 202, according to the frequency of sine wave signal to the first continuous optical signal
Phase and intensity are modulated, and the modulated first continuous optical signal is sent to Polarization Controller 206.
In a kind of implementation, the half-wave voltage of first Mach of increasing Dare modulator 203 is 4V, two-arm DC offset voltage
Difference is 2V, insertion loss 5dB, loads 90 degree of the radiofrequency signal phase phase difference in external modulator two-arm, amplitude is equal and is less than
1.75V, chirp coefficient range of choice are { 3,5,7,9 }, it is preferred that chirp coefficient 9.
Polarization Controller 206 increases the modulated first continuous light that Dare modulator 203 is sent for receiving first Mach
Signal, and polarization manipulation is carried out to the phase of the modulated first continuous optical signal, the first continuous light after polarization manipulation is believed
Number it is sent to second Mach of increasing Dare modulator 204.
Signal delay device 205, for receiving the sine wave signal of the transmission of sine wave signal generator 202, and it is pre- reaching
After the fixed time, sine wave signal is sent to second Mach of increasing Dare modulator 204.
In a kind of implementation, the time delay range of signal delay device 205 is { 0,0.1T, 0.15T, 2T }, it is preferred that signal
The time delay of delayer is 0.15T.
Second Mach of increasing Dare modulator 204, first after polarization manipulation for receiving the transmission of Polarization Controller 206 connect
The sine wave signal that continuous optical signal and signal delay device 205 are sent, according to the frequency of sine wave signal to the after polarization manipulation
The phase and intensity of one continuous optical signal are modulated generation frequency comb, and frequency comb is sent to radio frequency signal generating device
300。
In a kind of implementation, the half-wave voltage of second Mach of increasing Dare modulator 204 is 4V, two-arm DC offset voltage
Difference is 2V, insertion loss 5dB, loads 90 degree of the radiofrequency signal phase phase difference in external modulator two-arm, amplitude is equal and is less than
1.75V, chirp coefficient range of choice are { 3,5,7,9 }, it is preferred that chirp coefficient 9.
In a kind of implementation of the embodiment of the present invention, radio frequency signal generating device 300 includes: optical band pass filter, first
Photodetector and frequency selective switch, wherein
Optical band pass filter, for receiving the frequency comb of frequency comb generating device transmission, according to preset first frequency
Section is filtered frequency comb, filters out the signal in frequency comb other than preparatory first frequency range, filtered frequency comb is sent
To the first photodetector.
First photodetector, for receiving the filtered frequency comb of optical band pass filter transmission, to filtered light
Frequency comb carries out beat frequency and handles to obtain radiofrequency signal, and obtained radiofrequency signal is sent to frequency selective switch；
Frequency selective switch, target frequency and the first photodetector for receiving frequency selection controller transmission are sent
Radiofrequency signal, the signal of selection target frequency in the radiofrequency signal received, as radiofrequency signal to be generated.
Using scheme provided in an embodiment of the present invention, institute can be adjusted according to the size of the bandwidth of network where terminal device
The size at the frequency comb side frequency interval of generation, and radio frequency letter is generated using frequency comb generated by beat frequency technology
Number, it realizes and is believed using the radiofrequency signal of different frequency to terminal device transmission base band according to the demand of the traffic rate of terminal device
Number, it is thus possible to improve frequency spectrum resource utilization rate.
In a kind of implementation of the embodiment of the present invention, above system further include: electric signal modulating device and optical signal tune
Device processed, wherein
Radio frequency signal generating device 300 is also used to for radiofrequency signal to be sent to electric signal modulating device；
Electric signal modulating device, for obtaining the baseband signal and reception radio frequency signal generating device that are sent to terminal device
300 radiofrequency signals sent, will obtain radio frequency subcarrier signal on modulates baseband signals to radiofrequency signal, and by radio frequency subcarrier
Signal is sent to signal modulation device of optical.
Signal modulation device of optical generates second and connects for receiving the radio frequency subcarrier signal of electric signal modulating device transmission
Continuous optical signal is modulated to obtain light load according to phase and intensity of the frequency of radio frequency subcarrier signal to the second continuous optical signal
Baseband signal.
In a kind of implementation, the optical power of the second continuous optical signal can be 8dBm, and output frequency can be
193.1THZ, line width can be 0.1MHZ.
In a kind of implementation of the embodiment of the present invention, above-mentioned signal modulation device of optical includes: the second continuous wave laser and
Three Mach of increasing Dare modulators, wherein
Second continuous wave laser is sent for generating the second continuous optical signal, and by the generated second continuous optical signal
Increase Dare modulator to third Mach；
Third Mach increases Dare modulator, for receiving the second continuous optical signal and telecommunications of the transmission of the second continuous wave laser
The radio frequency subcarrier signal that number modulating device is sent, according to the frequency of radio frequency subcarrier signal to the phase of the second continuous optical signal
It is modulated to obtain light load baseband signal with intensity.
In a kind of implementation, the half-wave voltage that third Mach increases Dare modulator 204 is 4V, two-arm DC offset voltage
Difference is 2V, insertion loss 5dB, loads 90 degree of the radiofrequency signal phase phase difference in external modulator two-arm, amplitude is equal and is less than
1.75V, chirp coefficient range of choice are { 3,5,7,9 }, it is preferred that chirp coefficient 9.
In a kind of implementation of the embodiment of the present invention, above system further include: optical fiber link, optical signal demodulation device and
Electric signal demodulating equipment, wherein
Above-mentioned signal modulation device of optical is also used to light load baseband signal being transmitted to optical signal demodulation dress by optical fiber link
It sets.
In a kind of implementation, optical fiber link can be single mode optical fiber, attenuation coefficient 0.2dB/km, and chromatic dispersion is
16.74ps/nm*km。
Optical signal demodulation device carries baseband signal by the light that optical fiber link transmits for receiving, carries baseband signal to light
It is demodulated to obtain radio frequency subcarrier signal, by the power amplification of radio frequency subcarrier signal to target power, and filters out power and put
Signal in radio frequency subcarrier signal after big other than preset second frequency range, by filtered radio frequency subcarrier signal
It is sent to electric signal demodulator.
In a kind of implementation, optical signal demodulation device includes: the second photodetector, power amplifier and electric band logical
Filter, wherein
Second photodetector carries baseband signal by the light that optical fiber link transmits for receiving, carries baseband signal to light
It is demodulated to obtain radio frequency subcarrier signal, and radio frequency subcarrier signal is sent to power amplifier；
Power amplifier believes radio frequency subcarrier for receiving the radio frequency subcarrier signal of the second photodetector transmission
Number power amplification to target power, and the radio frequency subcarrier signal after power amplification is sent to electric bandpass filter；
Electric bandpass filter filters out function for receiving the amplified radio frequency subcarrier signal of rate of power amplifier transmission
Signal in the amplified radio frequency subcarrier signal of rate other than preset second frequency range, and filtered radio frequency pair is carried
Wave signal is sent to the electric signal demodulating equipment.
Electric signal demodulating equipment solves radio frequency subcarrier signal for the radio frequency subcarrier signal after accepting filter
Tune obtains baseband signal.
Referring to Fig. 3, the structural schematic diagram that a kind of light provided in an embodiment of the present invention carries RF communication system, system are shown
Include:
Frequency comb generating device 400, comprising: the first 401, first Mach of continuous light source increasing Dare modulator 402, sine wave
Signal generator 403, second Mach of increasings Dare modulator 404, Polarization Controller 405 and electric signal delayers 406；
Radio frequency signal generating device 410, comprising: the first optical band pass filter 411, the first photodetector 412 and frequency
Rate selects switch 413；
Frequency device for selection controlling 420；
Electric signal modulating device 430；
Signal modulation device of optical 440, comprising: the second continuous light source 441 and third Mach increase Dare modulator 442；
Optical fiber link 450, comprising: the second optical band pass filter 451 and single mode optical fiber 452；
Optical signal demodulation device 460, comprising: the second photodetector 461, power amplifier 462 and electric bandpass filter
463；
Radio frequency antenna apparatus 470；
Electric signal demodulating equipment 480.
In frequency comb generating device 400, optical power is 10dBm by the first continuous light source 401, and light frequency is 193.1THZ's
Continuous optical signal inputs in first Mach of increasing Dare modulator 402, meanwhile, it is selected by sine wave signal generator 403 according to frequency
The frequency for selecting the transmission of control device 420 generates sine wave signal, and using sine wave signal as first Mach of increasing Dare modulator
402 driving signal is input to first Mach of increasing Dare modulator 402, first Mach of 402 output optical signal of increasing Dare modulator
Second Mach of increasing Dare modulator 404 is inputted after Polarization Controller 405, meanwhile, it is generated by sine wave signal generator 403
Sine wave signal by time delay be 0.15T electric signal delayer 406 as second Mach increasing Dare modulator 404 driving
Signal is input in second Mach of increasing Dare modulator 404, to generate the adjustable flat frequency comb of more frequency intervals.
During generating flat frequency comb, frequency device for selection controlling 420 can be according to Netowrk tape where terminal device
The frequency for the sine wave signal that wide size control sine wave signal generator 403 generates, to realize high flat degree frequency comb
Frequency interval tunable characteristic；
The tunable frequency comb that frequency comb generating device 400 generates enters in radio frequency signal generating device 410, by first
Optical band pass filter 411,412 beat frequency of the first photodetector obtain radiofrequency signal, what frequency selective switch 413 was obtained in beat frequency
In multiple frequency signals, select the radiofrequency signal of suitable frequency as the carrier wave of baseband signal；
Electric signal modulating device 430 is by the radiofrequency signal that radio frequency signal generating device 410 generates and is sent to terminal device
Baseband signal be modulated to obtain radio frequency subcarrier signal；
In signal modulation device of optical 440, continuous optical power is 8dBm by the second continuous light source 441, and output frequency is
193.1THZ, the light carrier continuous light source that line width is 0.1MHZ are input to third Mach and increase in Dare modulator 442, and radio frequency pair carries
Wave signal increases in Dare modulator 442 as the driving signal input third Mach that third Mach increases Dare modulator 442, third
The output light that Mach increases Dare modulator 442 carries baseband signal by the centre frequency that optical fiber link 450 includes
193.135THz, the second optical band pass filter 451 and attenuation coefficient that bandwidth is 70GHz are 0.2dB/km, and chromatic dispersion is
The single mode optical fiber 452 of 16.74ps/nm*km is transmitted；
Signal after the transmission of single mode optical fiber 452, passes through second light of PIN type in optical signal demodulation device 460
The received light of 461 direct detection of electric explorer carries baseband signal, and the sensitivity of the second photodetector 461 is 1mA/mW.Second
Photodetector 461 recovers radio frequency subcarrier signal, by power amplifier 462, is filtered through electric bandpass filter 463
It is transmitted to electric signal demodulating equipment 480 in the form of radio frequency using radio frequency antenna apparatus 470, is wrapped in electric signal demodulating equipment 480
The local oscillator contained realizes electric signal demodulation, recovers the baseband signal for being sent to terminal device.
Referring to fig. 4, a kind of flow diagram of radiofrequency signal generation method provided in an embodiment of the present invention, the party are shown
Method includes:
S500, the bandwidth of network where obtaining terminal device；
S510 determines the target frequency for controlling generated signal frequency according to the size of acquired bandwidth；
S520 generates the first continuous optical signal, and using the target frequency to the phase of the described first continuous optical signal
Generation frequency comb is modulated with intensity；
S530 is filtered the frequency comb according to preset first frequency range, filters out in the frequency comb in institute
State the signal other than the first frequency range；
S540 carries out beat frequency to filtered frequency comb and obtains radiofrequency signal, institute is selected in obtained radiofrequency signal
The signal for stating target frequency, as radiofrequency signal to be generated.
In a kind of implementation of the embodiment of the present invention, the first continuous optical signal of the generation, and controlled using the frequency
The indicated preset frequency of instruction is modulated the step of generating frequency comb to the phase and intensity of the described first continuous optical signal,
Include:
Generate the first continuous optical signal；
Generate the sine wave signal that frequency is the target frequency；
The phase and intensity of the described first continuous optical signal are modulated according to the frequency of the sine wave signal, and exchanged
The phase of the first continuous optical signal after system carries out polarization manipulation；
After reaching the scheduled time, the first continuous light after polarization manipulation is believed according to the frequency of the sine wave signal
Number phase and intensity be modulated generation frequency comb.
In a kind of implementation of the embodiment of the present invention, the method also includes:
Obtain the baseband signal for being sent to the terminal device；
Radio frequency subcarrier signal will be obtained on the modulates baseband signals to the radiofrequency signal to be generated；
The second continuous optical signal is generated, according to the frequency of the radio frequency subcarrier signal to the described second continuous optical signal
Phase and intensity are modulated to obtain light load baseband signal.
In a kind of implementation of the embodiment of the present invention, the method also includes:
Baseband signal is carried to the light to be demodulated to obtain the radio frequency subcarrier signal；
By the power amplification of the radio frequency subcarrier signal to target power；
Radio frequency subcarrier signal after power amplification is demodulated to obtain the baseband signal.
Using scheme provided in an embodiment of the present invention, institute can be adjusted according to the size of the bandwidth of network where terminal device
The size at the frequency comb side frequency interval of generation, and radio frequency letter is generated using frequency comb generated by beat frequency technology
Number, it realizes and is believed using the radiofrequency signal of different frequency to terminal device transmission base band according to the demand of the traffic rate of terminal device
Number, it is thus possible to improve frequency spectrum resource utilization rate.
The embodiment of the invention also provides a kind of electronic equipment, as shown in figure 5, include processor 001, communication interface 002,
Memory 003 and communication bus 004, wherein processor 001, communication interface 002, memory 003 are complete by communication bus 004
At mutual communication,
Memory 003, for storing computer program；
Processor 001 when for executing the program stored on memory 003, realizes provided in an embodiment of the present invention penetrate
Frequency signal creating method.
Specifically, above-mentioned radiofrequency signal generation method, comprising:
The bandwidth of network where obtaining terminal device；
According to the size of acquired bandwidth, the target frequency for controlling generated signal frequency is determined；
The first continuous optical signal is generated, and using the target frequency to the phase and intensity of the described first continuous optical signal
It is modulated generation frequency comb；
The frequency comb is filtered according to preset first frequency range, is filtered out in the frequency comb to be generated in institute
State the signal other than the first frequency range；
Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the target is selected in obtained radiofrequency signal
The signal of frequency, as radiofrequency signal to be generated.
It should be noted that above-mentioned processor 001, which executes the program stored on memory 003, realizes that radiofrequency signal generates
The other embodiments of method, identical as the embodiment that preceding method embodiment part provides, which is not described herein again.
In each scheme provided in an embodiment of the present invention, it can be adjusted according to the size of the bandwidth of network where terminal device
The size at frequency comb side frequency generated interval, and radio frequency letter is generated using frequency comb generated by beat frequency technology
Number, it realizes and is believed using the radiofrequency signal of different frequency to terminal device transmission base band according to the demand of the traffic rate of terminal device
Number, it is thus possible to improve frequency spectrum resource utilization rate.
The communication bus that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral Pomponent
Interconnect, abbreviation PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, abbreviation EISA) bus etc..The communication bus can be divided into address bus, data/address bus, control bus etc..
Only to be indicated with a thick line in figure, it is not intended that an only bus or a type of bus convenient for indicating.
Communication interface is for the communication between above-mentioned electronic equipment and other equipment.
Memory may include random access memory (Random Access Memory, abbreviation RAM), also may include
Nonvolatile memory (Non-Volatile Memory, abbreviation NVM), for example, at least a magnetic disk storage.Optionally, it deposits
Reservoir can also be that at least one is located remotely from the storage device of aforementioned processor.
Above-mentioned processor can be general processor, including central processing unit (Central Processing Unit,
Abbreviation CPU), network processing unit Network Processor, abbreviation NP) etc.；It can also be digital signal processor (Digital
Signal Processing, abbreviation DSP), specific integrated circuit (Application Specific Integrated
Circuit, abbreviation ASIC), field programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or
Person other programmable logic device, discrete gate or transistor logic, discrete hardware components.
In another embodiment provided by the invention, a kind of computer readable storage medium is additionally provided, which can
It reads to be stored with instruction in storage medium, when run on a computer, realizes that radiofrequency signal provided in an embodiment of the present invention is raw
At method.
Specifically, above-mentioned radiofrequency signal generation method, comprising:
The bandwidth of network where obtaining terminal device；
According to the size of acquired bandwidth, the target frequency for controlling generated signal frequency is determined；
The first continuous optical signal is generated, and using the target frequency to the phase and intensity of the described first continuous optical signal
It is modulated generation frequency comb；
The frequency comb is filtered according to preset first frequency range, is filtered out in the frequency comb to be generated in institute
State the signal other than the first frequency range；
Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the target is selected in obtained radiofrequency signal
The signal of frequency, as radiofrequency signal to be generated.
It should be noted that realizing other implementations of radiofrequency signal generation method by above-mentioned computer readable storage medium
Example, identical as the embodiment that preceding method embodiment part provides, which is not described herein again.
In each scheme provided in an embodiment of the present invention, it can be adjusted according to the size of the bandwidth of network where terminal device
The size at frequency comb side frequency generated interval, and radio frequency letter is generated using frequency comb generated by beat frequency technology
Number, it realizes and is believed using the radiofrequency signal of different frequency to terminal device transmission base band according to the demand of the traffic rate of terminal device
Number, it is thus possible to improve frequency spectrum resource utilization rate.
In another embodiment provided by the invention, a kind of computer program product comprising instruction is additionally provided, when it
When running on computers, radiofrequency signal generation method provided in an embodiment of the present invention is realized.
Specifically, above-mentioned radiofrequency signal generation method, comprising:
The bandwidth of network where obtaining terminal device；
According to the size of acquired bandwidth, the target frequency for controlling generated signal frequency is determined；
The first continuous optical signal is generated, and using the target frequency to the phase and intensity of the described first continuous optical signal
It is modulated generation frequency comb；
The frequency comb is filtered according to preset first frequency range, is filtered out in the frequency comb to be generated in institute
State the signal other than the first frequency range；
Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the target is selected in obtained radiofrequency signal
The signal of frequency, as radiofrequency signal to be generated.
It should be noted that the other embodiments of radiofrequency signal generation method are realized by above-mentioned computer program product,
Identical as the embodiment that preceding method embodiment portion provides, which is not described herein again.
In each scheme provided in an embodiment of the present invention, it can be adjusted according to the size of the bandwidth of network where terminal device
The size at frequency comb side frequency generated interval, and radio frequency letter is generated using frequency comb generated by beat frequency technology
Number, it realizes and is believed using the radiofrequency signal of different frequency to terminal device transmission base band according to the demand of the traffic rate of terminal device
Number, it is thus possible to improve frequency spectrum resource utilization rate.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, same and similar portion between each embodiment
Dividing may refer to each other, and each embodiment focuses on the differences from other embodiments.Especially for method,
For electronic equipment, computer readable storage medium and computer program product embodiments, since it is substantially similar to system
Embodiment, so being described relatively simple, the relevent part can refer to the partial explaination of embodiments of method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of radiofrequency signal generates system, which is characterized in that the system comprises: frequency device for selection controlling, frequency comb hair
Generating apparatus and radio frequency signal generating device, wherein
The frequency device for selection controlling, for obtaining the bandwidth of network where terminal device, according to the size of acquired bandwidth,
It determines the target frequency for controlling generated signal frequency, the target frequency is sent to the frequency comb generating device,
And the target frequency is sent to the radio frequency signal generating device；
The frequency comb generating device receives what the frequency device for selection controlling was sent for generating the first continuous optical signal
The target frequency is modulated generation optical frequency using phase and intensity of the target frequency to the described first continuous optical signal
Comb, and the frequency comb is sent to the radio frequency signal generating device；
The radio frequency signal generating device, for receiving the frequency comb and frequency selection that the frequency comb generating device is sent
The target frequency that control device is sent, is filtered the frequency comb according to preset first frequency range, filters out institute
The signal in frequency comb other than first frequency range is stated, beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, in institute
The signal that the target frequency is selected in obtained radiofrequency signal, as radiofrequency signal to be generated.
2. the system as claimed in claim 1, which is characterized in that the frequency comb generating device include: the first continuous wave laser,
Sine wave signal generator, first Mach of increasing Dare modulator, second Mach of increasing Dare modulator, signal delay device and polarization
Controller, wherein
Described first continuous optical signal for generating the first continuous optical signal, and is sent to institute by first continuous wave laser
State first Mach of increasing Dare modulator；
The sine wave signal generator, the target frequency sent for receiving the frequency device for selection controlling, generates
Frequency is the sine wave signal of the target frequency, and the sine wave signal is sent to first Mach of increasing Dare modulator
With the signal delay device；
First Mach of increasing Dare modulator, the described first continuous light letter sent for receiving first continuous wave laser
Number and the sine wave signal that sends of the sine wave signal generator, according to the frequency of the sine wave signal to described the
The phase and intensity of one continuous optical signal are modulated, and the modulated first continuous optical signal is sent to the Polarization Control
Device；
The Polarization Controller increases the modulated first continuous light letter that Dare modulator is sent for receiving described first Mach
Number, and polarization manipulation is carried out to the phase of the modulated first continuous optical signal, by the first continuous optical signal after polarization manipulation
It is sent to second Mach of increasing Dare modulator；
The signal delay device, the sine wave signal sent for receiving the sine wave signal generator, and reaching
After the scheduled time, the sine wave signal is sent to second Mach of increasing Dare modulator；
Second Mach of increasing Dare modulator, first after polarization manipulation for receiving the Polarization Controller transmission are continuous
The sine wave signal that optical signal and the signal delay device are sent, according to the frequency of the sine wave signal to polarization manipulation
The phase and intensity of the continuous optical signal of first afterwards are modulated generation frequency comb, and the frequency comb is sent to the radio frequency
Signal generation device.
3. the system as claimed in claim 1, which is characterized in that the radio frequency signal generating device include: optical band pass filter,
First photodetector and frequency selective switch, wherein
The optical band pass filter, the frequency comb sent for receiving the frequency comb generating device, according to presetting
The first frequency range the frequency comb is filtered, filter out the signal in the frequency comb other than first frequency range, will filter
Frequency comb after wave is sent to first photodetector；
First photodetector, the filtered frequency comb sent for receiving the optical band pass filter, after filtering
Frequency comb carry out beat frequency handle to obtain radiofrequency signal, obtained radiofrequency signal is sent to the frequency selective switch；
The frequency selective switch, the target frequency and first light sent for receiving the frequency selection controller
The radiofrequency signal that electric explorer is sent, selects the signal of the target frequency, as to be generated in the radiofrequency signal received
Radiofrequency signal.
4. system as described in any one of claims 1-3, which is characterized in that the system also includes: electric signal modulating device
And signal modulation device of optical, wherein
The radio frequency signal generating device is also used to the radiofrequency signal to be generated being sent to the electric signal modulating device；
The electric signal modulating device, for obtaining the baseband signal and the reception radiofrequency signal that are sent to the terminal device
The radiofrequency signal to be generated that generation device is sent, will obtain on the modulates baseband signals to the radiofrequency signal to be generated
Radio frequency subcarrier signal, and the radio frequency subcarrier signal is sent to the signal modulation device of optical；
The signal modulation device of optical, the radio frequency subcarrier signal sent for receiving the electric signal modulating device are raw
At the second continuous optical signal, according to the frequency of the radio frequency subcarrier signal to the phase and intensity of the described second continuous optical signal
It is modulated to obtain light load baseband signal.
5. system as claimed in claim 4, which is characterized in that the system also includes: optical fiber link, optical signal demodulation device
And electric signal demodulating equipment, wherein
The signal modulation device of optical is also used to carry the light baseband signal by the optical fiber link and is transmitted to the light letter
Number demodulating equipment；
The optical signal demodulation device carries baseband signal by the light that the optical fiber link transmits for receiving, to described
Light carries baseband signal and is demodulated to obtain the radio frequency subcarrier signal, by the power amplification of the radio frequency subcarrier signal to mesh
Power is marked, and filters out the signal in the radio frequency subcarrier signal after power amplification other than preset second frequency range, will be filtered
Radio frequency subcarrier signal after wave is sent to the electric signal demodulator；
The electric signal demodulating equipment, for the radio frequency subcarrier signal after accepting filter, to the radio frequency subcarrier signal into
Row demodulation obtains the baseband signal.
6. system as claimed in claim 4, which is characterized in that the signal modulation device of optical includes: the second continuous wave laser
Increase Dare modulator with third Mach, wherein
Second continuous wave laser is sent for generating the second continuous optical signal, and by the generated second continuous optical signal
Increase Dare modulator to the third Mach；
The third Mach increases Dare modulator, for receive the second continuous optical signal that second continuous wave laser is sent and
The radio frequency subcarrier signal that the electric signal modulating device is sent, according to the frequency of the radio frequency subcarrier signal to described
The phase and intensity of second continuous optical signal are modulated to obtain light load baseband signal.
7. system as claimed in claim 5, which is characterized in that the optical signal demodulation device include: the second photodetector,
Power amplifier and electric bandpass filter, wherein
Second photodetector carries baseband signal by the light that the optical fiber link transmits for receiving, to described
Light carries baseband signal and is demodulated to obtain the radio frequency subcarrier signal, and the radio frequency subcarrier signal is sent to the function
Rate amplifier；
The power amplifier, the radio frequency subcarrier signal sent for receiving second photodetector will be described
Radio frequency subcarrier signal after power amplification is sent to the electricity to target power by the power amplification of radio frequency subcarrier signal
Bandpass filter；
The electricity bandpass filter, the amplified radio frequency subcarrier signal of rate sent for receiving the power amplifier, filter
Except in the radio frequency subcarrier signal after power amplification in preset second frequency range in addition to signal, and by filtered radio frequency
Subcarrier signal is sent to the electric signal demodulating equipment.
8. a kind of radiofrequency signal generation method, which is characterized in that the described method includes:
The bandwidth of network where obtaining terminal device；
According to the size of acquired bandwidth, the target frequency for controlling generated signal frequency is determined；
The first continuous optical signal is generated, and is carried out using phase and intensity of the target frequency to the described first continuous optical signal
Modulation generates frequency comb；
The frequency comb is filtered according to preset first frequency range, is filtered out in the frequency comb to be generated described
Signal other than one frequency range；
Beat frequency is carried out to filtered frequency comb and obtains radiofrequency signal, the target frequency is selected in obtained radiofrequency signal
Signal, as radiofrequency signal to be generated.
9. a kind of electronic equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein processing
Device, communication interface, memory complete mutual communication by communication bus；
Memory, for storing computer program；
Processor when for executing the program stored on memory, realizes method and step according to any one of claims 8.
10. a kind of computer readable storage medium, which is characterized in that instruction is stored in the computer readable storage medium,
When run on a computer, so that method and step described in computer perform claim requirement 8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932787A (en) * | 2019-11-29 | 2020-03-27 | 中国舰船研究设计中心 | Frequency hopping communication system based on direct modulation laser and frequency hopping signal generation method |
| CN112769474A (en) * | 2020-12-31 | 2021-05-07 | 中山大学 | Single-fiber bidirectional optical fiber transmission system based on asymmetric modulation spectrum |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447513A (en) * | 2011-09-05 | 2012-05-09 | 北京邮电大学 | 60GHz millimeter wave-based optical wireless fusion video transmission system and method |
| CN204481832U (en) * | 2015-04-02 | 2015-07-15 | 北京交通大学 | A kind of based on light comb and the ROF-PON full duplex system of carrier reuse |
| US20160087724A1 (en) * | 2014-09-19 | 2016-03-24 | Industrial Technology Research Institute | Optical communication device and optical communication method |
| CN106253992A (en) * | 2016-07-25 | 2016-12-21 | 暨南大学 | A kind of frequency comb production method and polarized orthogonal single-side band modulating device thereof |
| CN106712849A (en) * | 2016-12-01 | 2017-05-24 | 湖南大学 | Optical frequency comb based indoor millimeter wave and visible light communication hybrid multi-access method |
| CN107659361A (en) * | 2017-11-06 | 2018-02-02 | 北京邮电大学 | A kind of microwave signal process system and method |
-
2018
- 2018-12-20 CN CN201811592491.8A patent/CN109889269B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447513A (en) * | 2011-09-05 | 2012-05-09 | 北京邮电大学 | 60GHz millimeter wave-based optical wireless fusion video transmission system and method |
| US20160087724A1 (en) * | 2014-09-19 | 2016-03-24 | Industrial Technology Research Institute | Optical communication device and optical communication method |
| CN204481832U (en) * | 2015-04-02 | 2015-07-15 | 北京交通大学 | A kind of based on light comb and the ROF-PON full duplex system of carrier reuse |
| CN106253992A (en) * | 2016-07-25 | 2016-12-21 | 暨南大学 | A kind of frequency comb production method and polarized orthogonal single-side band modulating device thereof |
| CN106712849A (en) * | 2016-12-01 | 2017-05-24 | 湖南大学 | Optical frequency comb based indoor millimeter wave and visible light communication hybrid multi-access method |
| CN107659361A (en) * | 2017-11-06 | 2018-02-02 | 北京邮电大学 | A kind of microwave signal process system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110932787A (en) * | 2019-11-29 | 2020-03-27 | 中国舰船研究设计中心 | Frequency hopping communication system based on direct modulation laser and frequency hopping signal generation method |
| CN112769474A (en) * | 2020-12-31 | 2021-05-07 | 中山大学 | Single-fiber bidirectional optical fiber transmission system based on asymmetric modulation spectrum |
| CN112769474B (en) * | 2020-12-31 | 2022-02-11 | 中山大学 | Single-fiber bidirectional optical fiber transmission system based on asymmetric modulation spectrum |
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