CN105991202A - Frequency-spectrum-detection-based transceiver and frequency spectrum switching method - Google Patents
Frequency-spectrum-detection-based transceiver and frequency spectrum switching method Download PDFInfo
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- CN105991202A CN105991202A CN201510080347.6A CN201510080347A CN105991202A CN 105991202 A CN105991202 A CN 105991202A CN 201510080347 A CN201510080347 A CN 201510080347A CN 105991202 A CN105991202 A CN 105991202A
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Abstract
The invention discloses a frequency-spectrum-detection-based transceiver and a frequency spectrum switching method. The transceiver comprises an antenna unit, a receiver, a frequency spectrum detection device, a baseband processing device and a transmitter. The antenna unit is connected with an input terminal of the receiver and an output terminal of the transmitter; an output terminal of the receiver is connected with one end of the frequency spectrum detection device; and the other end of the frequency spectrum detection device is connected with an input terminal of the transmitter by the baseband processing device. The frequency spectrum detection device is used for dividing a whole frequency band into a plurality of sub frequency bands at preset intervals, detecting frequency spectrums of all sub frequency bands, determining an idle channel, and determining a sub frequency band needed by a low-pass filter and local frequencies of a first mixer and a second mixer. According to the embodiment of the invention, the idle spectrum resources can be used for carrying out communication under the circumstance that the user in communication is not affected, so that the spectrum allocation becomes flexible and efficient and the frequency spectrum efficient is high.
Description
Technical field
The present invention relates to transceiver technology field in wireless power private network, in particular it relates to one based on
The transceiver of frequency spectrum detection and frequency spectrum switching method.
Background technology
1991, build the needs of acquiring electric energy information and monitoring system, country to meet power system
Relevant departments are by 223MHz-235MHz frequency range, totally 15 double frequency frequencies and 10 single-frequency points are distributed to
Electric power is special.In power system, 230MHz wireless communication networks is referred to as " private network ", uses data radio station
Mode carries most electric power load control business.230MHz wireless communication system have small investment,
The advantages such as the construction period is short, maintenance is simple, are therefore highly suitable for the scattered power distribution network of communication node, so
And sharply increasing along with communication information amount, the shortcoming that its band resource is limited, transfer rate is low is the most aobvious
Existing, no longer can meet the demand of communication system of power grids business.
In existing technology, it is proposed that use carrier aggregation technology, and be aided with Adaptive Modulation and Coding should
To realize the raising of spectrum efficiency in electric power wireless private network.Carrier aggregation refers to discrete narrow band channel
Regard a member carrier as, and multiple discontinuously arranged member carriers are polymerized, and agree to distribution
Use to a user, so can produce the transmission bandwidth of several more than original narrowband systems times, thus reach
The effect transmitted to broadband.In this scenario, by 40 discrete frequencies on special for 230MHz electric power frequency spectrum
Point carries out carrier aggregation, is divided into several bunches according to its spectrum distribution.Transmitting terminal is by mixing and closes road shape
Cluster, and use Adaptive Modulation and Coding technology according to channel situation use different modulation coding mode from
And use the data transmission needs under varying environment, and receiving terminal branch receives, every road correspondence cluster, right
Every road carries out power detection.And data can be promoted pass according to up-downgoing data volume flexible allocation subcarrier
Defeated speed, reduces time delay, preferably promotes system effectiveness.
By to the research of above prior art and the consideration of actual application environment, it is found by the applicant that exist with
Lower shortcoming: (1), frequency point allocation and protection bandwidth must be optimized on the basis of prior art within the physical layer
Design；(2), this technology of carrier aggregation be a key character of LTE-Advanced standard, but accordingly
Air protocol still imperfection, member carrier classification, uplink clock in advance, Radio Link Failure process etc. many
The air protocol enhanced scheme of aspect is the most under discussion；(3), applying carrier aggregation technology, electric power is wireless
Private network spendable actual band resource is still limited as 1MHz.
Summary of the invention
The present invention is to overcome the defect that prior art midband utilization rate is low, according to one of the present invention
Aspect, proposes a kind of transceiver based on frequency spectrum detection.
A kind of based on frequency spectrum detection the transceiver that the embodiment of the present invention provides, including: antenna element,
Receiver, frequency spectrum detection device, base band processing device and transmitter；Antenna element respectively with receiver
Input is connected with the outfan of transmitter；The outfan of receiver is connected with one end of frequency spectrum detection device,
The other end of frequency spectrum detection device is connected with the input of transmitter by base band processing device；Receiver bag
Including low pass filter and the first frequency mixer, transmitter includes the second frequency mixer；The input of low pass filter
For the input of receiver, the outfan of low pass filter passes through the first frequency mixer and frequency spectrum detection device phase
Even；Frequency spectrum detection device for being divided into multiple frequency sub-band with predetermined interval by whole frequency range, and detects each
The frequency spectrum of individual frequency sub-band, determines idle channel；Frequency spectrum detection device control end respectively with the control of receiver
End processed is connected with the control end of transmitter, for determining the frequency sub-band needed for low pass filter and the first mixing
Device and the local frequency of the second frequency mixer.
In technique scheme, frequency spectrum detection device includes: detector unit, record unit and frequency spectrum are cut
Change unit；Detector unit, for detecting the frequency spectrum of each frequency sub-band, determines idle channel；Record unit is used
After determining idle channel in detector unit, record idle channel, update frequency spectrum service condition；Frequency spectrum switches
Unit carries out information transmission for idle channel being pre-selected in next time before information transmission.
In technique scheme, also include: the first voltage controlled oscillator and the first phaselocked loop, and the first pressure
Controlled oscillator and the first phaselocked loop are connected；Frequency spectrum detection device control end respectively with the control end of receiver
It is connected with the control end of transmitter, specifically includes: control end and the low pass filter of frequency spectrum detection device
Controlling end to be connected, the end input also with the first phaselocked loop that controls of frequency spectrum detection device is connected；First lock
The outfan of phase ring respectively with local oscillation signal input and the local oscillation signal of the second frequency mixer of the first frequency mixer
Input is connected.
In technique scheme, receiver also includes: low-noise amplifier, the first band filter,
First amplifier, three-mixer, the first adaptive gain control unit and AD conversion unit；Low pass filtered
The outfan of ripple device is connected with frequency spectrum detection device by the first frequency mixer, specifically includes: low pass filter
Outfan pass sequentially through low-noise amplifier, the first frequency mixer, the first band filter, first amplify
With frequency spectrum detection device after device, three-mixer, the first adaptive gain control unit, AD conversion unit
It is connected.
In technique scheme, transmitter also includes: D/A conversion unit, the second band filter,
4th frequency mixer, the 3rd band filter, the second amplifier, the second adaptive gain control unit and power
Amplifier；Base band processing device passes sequentially through D/A conversion unit, the second band filter, the 4th mixing
Device, the 3rd band filter, the second amplifier, the second frequency mixer, the second adaptive gain control unit,
It is connected with antenna element after power amplifier.
In technique scheme, transceiver also includes: the second voltage controlled oscillator and the second phaselocked loop,
And second voltage controlled oscillator and the second phaselocked loop be connected；When receiver includes three-mixer, the second lock
The outfan of phase ring and the local oscillation signal input of three-mixer are connected；When transmitter includes the 4th mixing
During device, the outfan of the second phaselocked loop and the local oscillation signal input of the 4th frequency mixer are connected.
In technique scheme, transceiver also includes duplexer；Antenna element respectively with receiver
Input is connected with the outfan of transmitter, specifically includes: antenna element by duplexer respectively with reception
The input of machine is connected with the outfan of transmitter.
The present invention is to overcome the defect that prior art midband utilization rate is low, according to one of the present invention
Aspect, proposes the frequency spectrum switching method in a kind of electric power wireless private network.
Frequency spectrum switching method in a kind of electric power wireless private network that the embodiment of the present invention provides, including: with in advance
If whole frequency range is divided into multiple frequency sub-band by interval；Select frequency sub-band laggard row many bands frequency spectrum detection,
Judge whether idle channel；When an idle channel is present, record idle channel, update frequency spectrum and use
Situation；When there is not idle channel, select next frequency sub-band, proceed many bands frequency spectrum detection,
Judge whether the step of idle channel；The idle letter of record is pre-selected before information transmission in next time
Road carries out information transmission.
In technique scheme, after record free channel step, also include: according to idle channel
The frequency sub-band at place determines required frequency sub-band and local frequency.
A kind of based on frequency spectrum detection the transceiver of embodiment of the present invention offer and frequency spectrum switching method, will
Whole frequency range is divided into multiple frequency sub-band, and the frequency spectrum obtained on each frequency sub-band by frequency spectrum detection technology is made
By situation, to guarantee to use idle frequency spectrum resource to communicate under not disturbing the user situation communicated,
Making frequency spectrum distribution more flexible efficiently, spectrum efficiency is higher.This frequency spectrum detection technology is based on software radio
Technology, therefore can support wide frequency range, multi-communication standard, it is possible to support system update and upgrading,
Applied range.
Other features and advantages of the present invention will illustrate in the following description, and, partly from froming the perspective of
Bright book becomes apparent, or understands by implementing the present invention.The purpose of the present invention is excellent with other
Point can come real by structure specifically noted in the description write, claims and accompanying drawing
Now and obtain.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with
Embodiments of the invention are used for explaining the present invention together, are not intended that limitation of the present invention.At accompanying drawing
In:
Fig. 1 is the first structure chart of transceiver based on frequency spectrum detection in the embodiment of the present invention；
Fig. 2 is the second structure chart of transceiver based on frequency spectrum detection in the embodiment of the present invention；
Fig. 3 is the detailed structure view of transceiver based on frequency spectrum detection in embodiment one；
Fig. 4 is the flow chart of embodiment of the present invention intermediate frequency spectrum changing method.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the detailed description of the invention of the present invention is described in detail, it is to be understood that this
The protection domain of invention is not limited by detailed description of the invention.
According to embodiments of the present invention, it is provided that a kind of transceiver based on frequency spectrum detection, Fig. 1 is these receipts
The structure chart of sender, including: at antenna element 10, receiver 20, frequency spectrum detection device 30, base band
Reason device 40 and transmitter 50.
Wherein, shown in Figure 1, antenna element 10 respectively with input and the transmitter of receiver 20
The outfan of 50 is connected；The outfan of receiver 20 is connected with one end of frequency spectrum detection device 30, frequency spectrum
The other end of detection device 30 is connected with the input of transmitter 50 by base band processing device 40.Fig. 1
In antenna element 10 include reception antenna ANY1 and launch antenna ANT2.Additionally, reception antenna and
Launch antenna can also public same antenna, as in figure 2 it is shown, this transceiver also includes duplexer 60,
10 need of antenna element arrange an antenna, the integrated reception antenna of this antenna and the function of transmitting antenna,
Antenna element 10 by duplexer 60 respectively with input and the outfan of transmitter 50 of receiver 20
It is connected, referring specifically to shown in Fig. 2.
In the embodiment of the present invention, receiver 20 includes low pass filter LPF and the first frequency mixer M1, sends out
Penetrate machine 50 and include the second frequency mixer M2.Wherein, the input of low pass filter LPF is receiver 20
Input, the outfan of low pass filter LPF is by the first frequency mixer M1 and frequency spectrum detection device 30
It is connected；Referring specifically to shown in Fig. 1.
Frequency spectrum detection device 30 is for being divided into multiple frequency sub-band with predetermined interval by whole frequency range, and detects
The frequency spectrum of each frequency sub-band, determines idle channel.The control end of frequency spectrum detection device 30 respectively with receiver
The end that controls of 20 is connected with the control end of transmitter 50, for determining the son needed for low pass filter LPF
Frequency range and the first frequency mixer M1 and the local frequency of the second frequency mixer M2.
Preferably, frequency spectrum detection device 30 includes: detector unit, record unit and frequency spectrum switch unit.
Wherein:
Detector unit, for detecting the frequency spectrum of each frequency sub-band, determines idle channel；
Record unit, for recording idle channel after detector unit determines idle channel, updates frequency spectrum and uses
Situation；
Frequency spectrum switch unit carries out information biography for idle channel being pre-selected in next time before information transmission
Defeated.
Concrete, in embodiments of the present invention as a example by 230MHz electric power wireless private network: electric power enterprise exists
When using 230MHz frequency range, a width of 25KHz of fixed channel band, so 230MHz frequency range is i.e.
223～235MHz can be divided into 480 communication channels；Taking predetermined interval is 1MHz, then 230MHz
Whole frequency range is set to a frequency sub-band unit with every 1MHz, can be divided into CH1, CH2 ..., CH12
Totally 12 frequency sub-band.After whole frequency range is divided into frequency sub-band, then detect the frequency spectrum of each frequency sub-band, really
Determine idle channel, such that it is able to alleviate the operating pressure of frequency spectrum detection.
Additionally, after determining idle channel, i.e. may determine that transceiver receives during signal required
Sub-frequency and the local frequency of frequency mixer.In the embodiment of the present invention, low pass filter LPF is the most permissible
For numerical control tunable RF preselection low pass filter, other signals outside required frequency sub-band can be filtered, have
Imitate avoids mirror image harmony wave interference.Meanwhile, the frequency spectrum switch unit in frequency spectrum detection device 30 is used for
Determine idle channel, and be that transmission next time is ready.Frequency spectrum detection device 30 is each frequency sub-band unit
Frequency Band Selection control word and the local oscillating frequency of the tunable low pass filter of corresponding RF preselection are provided.
When being transferred to reach next time, select idle channel, be previously-completed corresponding frequency sub-band and local oscillating frequency
Setting.When once information transmission occurs, the record unit of frequency spectrum detection device will be carried out
Once update.
A kind of based on frequency spectrum detection the transceiver that the embodiment of the present invention provides, is divided into whole frequency range
Multiple frequency sub-band, obtain the frequency spectrum service condition on each frequency sub-band, to guarantee by frequency spectrum detection technology
Idle frequency spectrum resource is used to communicate under not disturbing the user situation communicated so that frequency spectrum distributes
More flexible efficiently, spectrum efficiency is higher.This frequency spectrum detection technology, based on software and radio technique, therefore can
Support wide frequency range, multi-communication standard, it is possible to support system update and upgrading, applied range.
The 26S Proteasome Structure and Function of this transceiver is discussed in detail below by an embodiment.
Embodiment one
In embodiment one, Receiver And Transmitter all uses the mode of double conversion.As it is shown on figure 3,
Transceiver includes above-mentioned antenna element 10, receiver 20, frequency spectrum detection device 30, Base-Band Processing dress
Put 40, transmitter 50 and duplexer 60.
Wherein, receiver 20 specifically includes: low pass filter LPF, low-noise amplifier LNA, first
Frequency mixer M1, the first band filter BPF1, the first amplifier A1, three-mixer M3, first
Adaptive gain control unit AGC1 and AD conversion unit AD；The outfan of this low pass filter LPF
Pass sequentially through low-noise amplifier LNA, the first frequency mixer M1, the first band filter BPF1, first
Amplifier A1, three-mixer M3, the first adaptive gain control unit AGC1 and AD conversion unit
It is connected with frequency spectrum detection device 30 after AD.
Transmitter specifically includes: D/A conversion unit DA, the second band filter BPF2, the 4th mixing
Device M4, the 3rd band filter BPF3, the second amplifier A2, the second frequency mixer M2, second adaptive
Answer gain controller AGC2 and power amplifier PA；Base band processing device 40 passes sequentially through digital-to-analogue conversion
Cells D A, the second band filter BPF2, the 4th frequency mixer M4, the 3rd band filter BPF3,
Second amplifier A2, the second frequency mixer M2, the second adaptive gain control unit AGC2 and power amplification
It is connected with duplexer 60 after device PA.
In embodiment one, transceiver also includes: the first voltage controlled oscillator VCO 1 and the first phaselocked loop
PLL1, and the first voltage controlled oscillator VCO 1 is connected with the first phase-locked loop pll 1.Frequency spectrum detection device 30
Control end be connected with the control end of low pass filter LPF, be used for determine low pass filter LPF needed for
Frequency sub-band, in order to low pass filter LPF filters other signals outside required frequency sub-band, effectively avoids
Mirror image harmony wave interference.
Meanwhile, the end input also with the first phase-locked loop pll 1 that controls of frequency spectrum detection device 30 is connected；
The outfan of the first phase-locked loop pll 1 is mixed with the local oscillation signal input of the first frequency mixer M1 and second respectively
Frequently the local oscillation signal input M2 of device M2 is connected, for the control according to frequency spectrum detection device 30 input
Instruct and provide local oscillation signal to the first frequency mixer M1 and the second frequency mixer M2.
As it is shown on figure 3, this transceiver also includes: the second voltage controlled oscillator VCO 2 and the second phaselocked loop
PLL2, and the second voltage controlled oscillator VCO 2 is connected with the second phase-locked loop pll 2.Second phase-locked loop pll 2
Outfan respectively with local oscillation signal input and the local oscillation signal of the 4th frequency mixer of three-mixer M3
Input is connected, for providing the local oscillation signal fixed to three-mixer M3 and the 4th frequency mixer M4.
In embodiment one, low pass filter LPF filters other signals outside required frequency sub-band, low noise
The signal of reception is amplified and suppresses noise power by amplifier LNA.In embodiment one, receiver
It is made up of the up-conversion of an adjustable local frequency of numerical control and the down coversion of a fixing local frequency, launches
Pole is made up of, really the down coversion of an adjustable local frequency of numerical control and the up-conversion of a fixing local frequency
Guarantor can carry out Frequency Band Selection；That is, the first frequency mixer M1 and the 4th frequency mixer M4 is up-conversion mixer,
Second frequency mixer M2 and three-mixer M3 is down-conversion mixer.
It should be noted that in embodiment one as a example by double conversion, it is preferred that as the case may be
Can also use repeatedly frequency conversion, can also use simultaneously mode that in embodiment one, Up/Down Conversion combines or
Person uses the mode of independent up-conversion or uses the mode of independent down coversion.
In frequency spectrum detection device 30, detector unit mechanism is as it was previously stated, frequency spectrum switch unit is responsible for from label
Obtaining idle channel in unit, ready for transmission next time, it provides corresponding for each frequency sub-band unit
The Frequency Band Selection control word of RF preselection is tunable low pass filter LPF and local oscillating frequency.Work as next time
When transmission arrives, select idle channel, the most first complete the setting of corresponding frequency sub-band and local oscillating frequency.
Base band processing device 40 is sent into after digital signal out in receiver 20 is done required Base-Band Processing
Transmitter 50.Transmitter 50 is then main by digital to analog converter DA, double conversion assembly, the second self adaptation
Gain control AGC2 and power amplifier PA composition, is finally mapped to transmitting signal on transmitting antenna and sends out
See off.
Based on identical inventive concept, the embodiment of the present invention also provides for the frequency spectrum in a kind of electric power wireless private network
Changing method, shown in Figure 4, the method specifically includes:
Step 401: whole frequency range is divided into multiple frequency sub-band with predetermined interval.
Step 402: select a frequency sub-band.
Step 403: carry out many bands frequency spectrum detection.
Step 404: judge whether idle channel, when an idle channel is present, continues step 405,
Otherwise continue step 406.
Step 405: record idle channel, updates frequency spectrum service condition, and continues step 408.
Step 406: select next frequency sub-band
Step 407: judge whether to detect all channels, when the most all channels, continues step
408, otherwise continue step 403.
Step 408: the idle channel that record is pre-selected in next time before information transmission carries out information transmission.
Preferably, after record free channel step, also include: according to the son frequency at idle channel place
Section determines required frequency sub-band and local frequency.Concrete, the frequency sub-band at this idle channel place is institute
The frequency sub-band needed, is determined for the frequency sub-band needed for low pass filter LPF in above-mentioned transceiver,
And then filter other signals outside required frequency sub-band；This local frequency is in above-mentioned transceiver first and mixes
Frequently device and the local frequency of the second frequency mixer.
The most still as a example by 230MHz electric power wireless private network: electric power enterprise is using
During 230MHz frequency range, a width of 25KHz of fixed channel band, so 230MHz frequency range that is 223～235MHz
480 communication channels can be divided into；Taking predetermined interval is 1MHz, then the whole frequency range of 230MHz is with often
1MHz is set to a frequency sub-band unit, can be divided into CH1, CH2 ..., CH12 totally 12 sons
Frequency range.After whole frequency range is divided into frequency sub-band, then detect the frequency spectrum of each frequency sub-band, determine idle letter
Road, such that it is able to alleviate the operating pressure of frequency spectrum detection.
A kind of based on frequency spectrum detection the transceiver of embodiment of the present invention offer and frequency spectrum switching method, will
Whole frequency range is divided into multiple frequency sub-band, and the frequency spectrum obtained on each frequency sub-band by frequency spectrum detection technology is made
By situation, to guarantee to use idle frequency spectrum resource to communicate under not disturbing the user situation communicated,
Making frequency spectrum distribution more flexible efficiently, spectrum efficiency is higher.This frequency spectrum detection technology is based on software radio
Technology, therefore can support wide frequency range, multi-communication standard, it is possible to support system update and upgrading,
Applied range.
The present invention can have the detailed description of the invention of multiple multi-form, combines attached above as a example by Fig. 1-Fig. 4
Figure explanation for example to technical scheme, this is not meant to the instantiation that the present invention is applied
Can only be confined in specific flow process or example structure, those of ordinary skill in the art it is to be appreciated that
Specific embodiments presented above is some examples in multiple its preferred usage, any embodiment this
The embodiment of bright claim all should be within the scope of technical solution of the present invention be claimed.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, it is not used to limit
The present invention processed, although being described in detail the present invention with reference to previous embodiment, for this area
For technical staff, the technical scheme described in foregoing embodiments still can be modified by it,
Or wherein portion of techniques feature is carried out equivalent.All within the spirit and principles in the present invention,
Any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. a transceiver based on frequency spectrum detection, it is characterised in that including: antenna element, reception
Machine, frequency spectrum detection device, base band processing device and transmitter；
Described antenna element outfan with the input of described receiver and described transmitter respectively is connected；
The outfan of described receiver is connected with one end of described frequency spectrum detection device, described frequency spectrum detection device
The other end is connected with the input of described transmitter by described base band processing device；
Described receiver includes low pass filter and the first frequency mixer, and described transmitter includes the second frequency mixer；
The input of described low pass filter is the input of described receiver, the outfan of described low pass filter
It is connected with described frequency spectrum detection device by described first frequency mixer；
Described frequency spectrum detection device is for being divided into multiple frequency sub-band with predetermined interval by whole frequency range, and examines
Survey the frequency spectrum of each frequency sub-band, determine idle channel；The control end of described frequency spectrum detection device respectively with institute
The end that controls stating receiver is connected with the control end of described transmitter, is used for determining described low pass filter institute
The frequency sub-band needed and described first frequency mixer and the local frequency of described second frequency mixer.
Transceiver the most according to claim 1, it is characterised in that described frequency spectrum detection device bag
Include: detector unit, record unit and frequency spectrum switch unit；
Described detector unit, for detecting the frequency spectrum of each frequency sub-band, determines idle channel；
Described record unit is used for recording described idle channel after described detector unit determines idle channel,
Update frequency spectrum service condition；
Described frequency spectrum switch unit is carried out for described idle channel being pre-selected in next time before information transmission
Information is transmitted.
Transceiver the most according to claim 1, it is characterised in that also include: first voltage-controlled shakes
Swing device and the first phaselocked loop, and described first voltage controlled oscillator is connected with described first phaselocked loop；
Described frequency spectrum detection device control end respectively with described receiver control end and described transmitter
Control end to be connected, specifically include:
The end that controls of described frequency spectrum detection device is connected with the control end of described low pass filter, described frequency spectrum
The end input also with described first phaselocked loop that controls of detection device is connected；Described first phaselocked loop defeated
Go out end respectively with the local oscillation signal input of described first frequency mixer and the local oscillation signal of described second frequency mixer
Input is connected.
Transceiver the most according to claim 1, it is characterised in that described receiver also includes:
Low-noise amplifier, the first band filter, the first amplifier, three-mixer, the first self adaptation increase
Benefit controller and AD conversion unit；
The outfan of described low pass filter is by described first frequency mixer and described frequency spectrum detection device phase
Even, specifically include:
The outfan of described low pass filter pass sequentially through described low-noise amplifier, described first frequency mixer,
Described first band filter, described first amplifier, described three-mixer, described first self adaptation
It is connected with described frequency spectrum detection device after gain controller, described AD conversion unit.
Transceiver the most according to claim 1, it is characterised in that described transmitter also includes:
D/A conversion unit, the second band filter, the 4th frequency mixer, the 3rd band filter, the second amplification
Device, the second adaptive gain control unit and power amplifier；
Described base band processing device pass sequentially through described D/A conversion unit, described second band filter,
Described 4th frequency mixer, described 3rd band filter, described second amplifier, described second frequency mixer,
It is connected with described antenna element after described second adaptive gain control unit, described power amplifier.
6. according to the transceiver described in claim 4 or 5, it is characterised in that also include: the second pressure
Controlled oscillator and the second phaselocked loop, and described second voltage controlled oscillator is connected with described second phaselocked loop；
When described receiver includes three-mixer, the outfan of described second phaselocked loop and the described 3rd
The local oscillation signal input of frequency mixer is connected；
When described transmitter includes four frequency mixers, the outfan of described second phaselocked loop and the described 4th
The local oscillation signal input of frequency mixer is connected.
7. according to the arbitrary described transceiver of claim 1-5, it is characterised in that also include duplexer；
Described antenna element outfan with the input of described receiver and described transmitter respectively is connected,
Specifically include:
Described antenna element by described duplexer respectively with the input of described receiver and described transmitter
Outfan be connected.
8. the frequency spectrum switching method in an electric power wireless private network, it is characterised in that including:
With predetermined interval, whole frequency range is divided into multiple frequency sub-band；
Select frequency sub-band laggard row many bands frequency spectrum detection, it may be judged whether there is idle channel；
When an idle channel is present, record described idle channel, update frequency spectrum service condition；
When there is not idle channel, selecting next frequency sub-band, proceeding many bands frequency spectrum detection, sentence
The disconnected step that whether there is idle channel；
The idle channel that record is pre-selected in next time before information transmission carries out information transmission.
Method the most according to claim 8, it is characterised in that record described idle channel described
After step, also include:
Frequency sub-band according to described idle channel place determines required frequency sub-band and local frequency.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107147456A (en) * | 2017-06-30 | 2017-09-08 | 杭州清本科技有限公司 | Spectrum Conversion method and computer-readable storage medium |
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| CN104219008A (en) * | 2014-09-12 | 2014-12-17 | 中国电子科技集团公司第三十六研究所 | Broadband spectrum detecting method and device |
| CN104333873A (en) * | 2014-11-28 | 2015-02-04 | 东莞宇龙通信科技有限公司 | Channel detection method and system, as well as equipment and terminal having functions of base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107147456A (en) * | 2017-06-30 | 2017-09-08 | 杭州清本科技有限公司 | Spectrum Conversion method and computer-readable storage medium |
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