CN105119647A - Method for realizing mixed flexible repeater - Google Patents
Method for realizing mixed flexible repeater Download PDFInfo
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- CN105119647A CN105119647A CN201510398487.8A CN201510398487A CN105119647A CN 105119647 A CN105119647 A CN 105119647A CN 201510398487 A CN201510398487 A CN 201510398487A CN 105119647 A CN105119647 A CN 105119647A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/118—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum specially adapted for satellite communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Astronomy & Astrophysics (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a method for realizing a mixed flexible repeater, and mainly relates to the all-optical frequency conversion and all-optical exchange technology in the communication field, and the technology of heterogeneous channelization and circuit switching. The structure mainly comprises a microwave photon forwarding part and a microwave digital flexible forwarding part, wherein the microwave photon forwarding part realizes large-granular bandwidth-variable transparent forwarding based on photonics broadband, high speed and low-power, and the microwave digital flexible forwarding part, as an auxiliary means, realizes small-and-medium -granular bandwidth-variable transparent forwarding and forwarding processing. The two parts are jointly controlled through a spaceborne control device, and realize flexible forwarding of multibeam bandwidth signals of different granularity. The mixed flexible repeater provides a multipath digital interface to the external, and can connect spaceborne packet switching and processing load. The method is low in complexity, supports reconstructible design and multi-mode forwarding, and the microwave photon forwarding part and the microwave digital flexible forwarding part can be used independently.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of implementation method mixing flexible transponder, be particularly suitable for the application demand supporting multi-beam, multi-functional, reconfigurable Utility Satellite transponder.
Background technology
At present forward the technological approaches exchanged and mainly contain for realizing information between multi-beam satellite load wave beam and forward exchange based on the packet switching of process complete on star, the Digital Microwave based on the process of star upper part that combines based on microwave Inverse problem and above two kinds of modes of transparent forwarding on star.
Microwave Inverse problem technology based on transparent forwarding on star achieves the transparent forwarding of satellite, satellite does not process subscriber signal, signal format and content and transponder have nothing to do, and therefore there is not the dependence to signal madulation and coded system, have stronger adaptability and flexibility.But because microwave switching matrix on star is all Hard link, its Route Selection mode is fixing, cannot adapt to the change of traffic carrying capacity by this way, be difficult to meet the requirement that sudden strong Internet applies.And microwave matrix-style may be excessive due to volume weight, isolation realizes difficulty and is difficult to obtain satisfied performance.Meanwhile, under which, the exchange of signal is realized by analog filter and intermediate frequency switching matrix, and switching bandwidth is generally the bandwidth of a transponder, as 36MHz, 54MHz or 72MHz etc., even carries out in units of wave beam.If carry out more fine-grained exchange, then the complexity of switching matrix can significantly improve, often beyond the exchange capacity of microwave switching matrix.
Packet-switch technology based on process complete on star then needs satellite repeater to carry out the work such as signal down-conversion, demodulation, decoding, be baseband signal by the signal recuperation received, again baseband signal is processed through carrying out exchange, recompile, modulation, up-conversion, finally launch signal afterwards.Compared to the microwave Inverse problem technology of transparent forwarding, this mode can tolerate higher interference level, simplifies earth station design, reduces user cost, improve the power resource utilance of system and the capacity of system.Its cost is the increase in the complexity on star, and has dependence to physical layer, and satellite quality and load power consumption also can be made significantly to increase.Meanwhile, transformat and the COS of system are fixed, can not the renewal of adaptive technique standard or communication protocol, and flexibility is poor, can cause difficulty to the application of new technology and the expansion of new business.And when wave beam is more, block exchange mode because signal transacting is too complicated, cannot may realize.
In a word, the subject matter that current satellite repeater faces is that Heavy Weight, volume are large, and system flexibility is poor, and greatly, and transponder capacity is difficult to growth and the demblee form business of adaption demand to system power dissipation, adaptability and autgmentability inadequate.
Summary of the invention
Problem to be solved by this invention is the weak point that the current satellite repeater avoiding mentioning in above-mentioned background technology exists and provides a kind of mixing flexible transponder implementation method.The present invention have low in energy consumption, flexibility is strong, implementation complexity is low, support the advantage such as reconfigurable design and multi-mode forwarding, can realize the flexible forwarding of multi-beam, different grain size bandwidth signal.
The object of the present invention is achieved like this, and a kind of implementation method mixing flexible transponder, comprises the following steps:
1. the N road radiofrequency signal of different frequency range forwards through microwave photon, completes and exchanges the radiofrequency signal correspondence of the coarsegrain bandwidth in the radiofrequency signal of N road and obtain M road intermediate-freuqncy signal; Described M road intermediate-freuqncy signal is made up of identical first group of N road intermediate-freuqncy signal and second group of N road intermediate-freuqncy signal; Described N and M is natural number, and M=2*N;
2. first group of N road intermediate-freuqncy signal being carried out respectively frequency up-converted is first group of N road radiofrequency signal; Second group of N road intermediate-freuqncy signal is carried out analog to digital conversion respectively and obtains L railway digital baseband signal, to not needing the digital baseband signal correspondence of carrying out granularity bandwidth in processing forward to exchange laggard line number modular transformation in L railway digital baseband signal, then become L road radiofrequency signal by upconverter; After comprehensive recovery, demodulation is carried out to needing the digital baseband signal of the medium and small granularity bandwidth of carrying out processing forward in L railway digital baseband signal, signal after demodulation is carried out packet switching, signal after packet switching being carried out modulating transformation is intermediate-freuqncy signal, then is converted to L road radiofrequency signal through upconverter; Every P road signal of L road radiofrequency signal is become a road radiofrequency signal by mixer, obtains second group of N road radiofrequency signal; Described L and P is natural number, L=P*N;
3. by each road signal of first group of N road radiofrequency signal and the corresponding road signal of second group of N road radiofrequency signal respectively through exporting N road radiofrequency signal after mixer;
Complete the realization mixing flexible transponder.
Wherein, step 1. described in microwave photon forward comprise electro-optic conversion, light exchange and opto-electronic conversion.
Wherein, described coarsegrain, middle granularity and small grain size bandwidth signal are distinguished according to spaceborne control agent information.
The present invention compares background technology tool and has the following advantages:
(1) microwave photon conversion forwards to have carried out applying with Digital Microwave flexibility and merges by the present invention, taken into account the forwarding to large, medium and small different grain size bandwidth, take full advantage of microwave photon broadband, at a high speed, the flexibility that forwards of the feature of low-power consumption and Digital Microwave flexibility.
(2) transparent forwarding and processing forward merge by the present invention, take the mode of hardware resource sharing to reduce implementation complexity, hardware and control simultaneously works in coordination with reconfigurable design with supporting star, the weakness of Weakening treatment retransmission process solidification, increase multi-mode support, strengthen its flexibility.
(3) the present invention forwards microwave photon conversion and Digital Microwave flexibility and has carried out jointly controlling of integration, and control strategy is proposed, make two technology become the entirety with interaction relation from independent individuality, thus there is very large flexibility in the adaptability of technology.
(4) employ the 4*4 array waveguide grating (as shown in Figure 2) of 4 4*1 array waveguide gratings and 1 support cyclic shift in microwave photon converter technique of the present invention, to simplify, ground structure is ingenious to be achieved the frequency conversion simultaneously of multichannel multi-band signal and exports without aliasing non-blocking cross.
(5) have employed technology that AWG and WSS combines in microwave photon switching technology of the present invention innovatively to design and realize ROADM handshaking, not only save space, and have that cost is low, the feature of flexible configuration.
Accompanying drawing explanation
Fig. 1 is the electric functional-block diagram of the embodiment of the present invention.Fig. 1 is forwarded by microwave photon and Digital Microwave flexibility forwarding two parts form.
Fig. 2 be microwave photon of the present invention forward realize theory diagram.
Fig. 3 be Digital Microwave of the present invention forward realize theory diagram.
Embodiment
Referring to figs. 1 through Fig. 3, the present invention is described in further details.Fig. 1 is the electric functional-block diagram of the embodiment of the present invention, and it is primarily of microwave photon forwarding, the flexible forwarding of Digital Microwave, packet switching, spaceborne control agent, upconverter and mixer composition.
Mix an implementation method for flexible transponder, comprise step:
1. wave beam 1 forwards to the signal of wave beam 4 through microwave photon, completes to exchange the radiofrequency signal correspondence of wherein coarsegrain bandwidth and obtain intermediate-freuqncy signal 1 to arrive intermediate-freuqncy signal 8; 8 described tunnel intermediate-freuqncy signals are made up of two groups of identical 4 tunnel intermediate-freuqncy signals;
Described microwave photon forwards principle as shown in Figure 2, specifically comprises electro-optic conversion, light exchanges and opto-electronic conversion;
2. intermediate-freuqncy signal 1 being carried out frequency up-converted respectively to intermediate-freuqncy signal 4 is first group of 4 tunnel radiofrequency signal, and namely radiofrequency signal 1 is to radiofrequency signal 4; Intermediate-freuqncy signal 5 is carried out analog to digital conversion respectively to intermediate-freuqncy signal 8 and obtains 16 railway digital baseband signals, laggard line number modular transformation is exchanged to the digital baseband signal correspondence of granularity bandwidth in 16 railway digital baseband signals, then becomes 16 tunnel radiofrequency signals by upconverter; After comprehensive recovery, demodulation is carried out to needing the medium and small granularity bandwidth digital baseband signal carrying out processing forward in 16 railway digital baseband signals, signal after demodulation is carried out packet switching, signal after packet switching being carried out modulating transformation is intermediate-freuqncy signal, then is converted to 16 tunnel radiofrequency signals through upconverter; Every 4 road signals of 16 tunnel radiofrequency signals are become a road radiofrequency signal by mixer, obtains second group of 4 tunnel radiofrequency signal, namely radiofrequency signal 1 is to radiofrequency signal 4;
3. by the radiofrequency signal 1 in first group of 4 tunnel radiofrequency signal to radiofrequency signal 4 respectively with second group of 4 tunnel radiofrequency signal corresponding road signal respectively through exporting 4 road beam signals after mixer.
Claims (3)
1. mix an implementation method for flexible transponder, it is characterized in that comprising the following steps:
1. the N road radiofrequency signal of different frequency range forwards through microwave photon, completes and exchanges the radiofrequency signal correspondence of the coarsegrain bandwidth in the radiofrequency signal of N road and obtain M road intermediate-freuqncy signal; Described M road intermediate-freuqncy signal is made up of identical first group of N road intermediate-freuqncy signal and second group of N road intermediate-freuqncy signal; Described N and M is natural number, and M=2*N;
2. first group of N road intermediate-freuqncy signal being carried out respectively frequency up-converted is first group of N road radiofrequency signal; Second group of N road intermediate-freuqncy signal is carried out analog to digital conversion respectively and obtains L railway digital baseband signal, to not needing the digital baseband signal correspondence of carrying out granularity bandwidth in processing forward to exchange laggard line number modular transformation in L railway digital baseband signal, then become L road radiofrequency signal by upconverter; After comprehensive recovery, demodulation is carried out to needing the digital baseband signal of the medium and small granularity bandwidth of carrying out processing forward in L railway digital baseband signal, signal after demodulation is carried out packet switching, signal after packet switching being carried out modulating transformation is intermediate-freuqncy signal, then is converted to L road radiofrequency signal through upconverter; Every P road signal of L road radiofrequency signal is become a road radiofrequency signal by mixer, obtains second group of N road radiofrequency signal; Described L and P is natural number, L=P*N;
3. by each road signal of first group of N road radiofrequency signal and the corresponding road signal of second group of N road radiofrequency signal respectively through exporting N road radiofrequency signal after mixer;
Complete the realization mixing flexible transponder.
2. a kind of implementation method mixing flexible transponder according to claim 1, is characterized in that: step 1. described in microwave photon forward comprise electro-optic conversion, light exchange and opto-electronic conversion.
3. a kind of implementation method mixing flexible transponder according to claim 1, is characterized in that: described coarsegrain, middle granularity and small grain size bandwidth signal are distinguished according to spaceborne control agent information.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105790880A (en) * | 2016-03-01 | 2016-07-20 | 中国电子科技集团公司第五十四研究所 | Radio frequency exchange method based on microwave photon technology |
| CN105827305A (en) * | 2016-04-15 | 2016-08-03 | 中国电子科技集团公司第五十四研究所 | Reconfigurable flexible forwarding implementation method combining transparency and processing |
| CN107769873A (en) * | 2017-09-27 | 2018-03-06 | 中国电子科技集团公司第五十四研究所 | A kind of flexible digital band limited white noise production method |
| CN108880716A (en) * | 2018-07-05 | 2018-11-23 | 中国电子科技集团公司第五十四研究所 | A kind of Satellite Channel Simulator design method based on digital channelizing technology |
| CN113839703A (en) * | 2021-07-30 | 2021-12-24 | 长光卫星技术有限公司 | Flexible forwarding system combining frequency resource optimization and link dynamic management technology and forwarding method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113839703A (en) * | 2021-07-30 | 2021-12-24 | 长光卫星技术有限公司 | Flexible forwarding system combining frequency resource optimization and link dynamic management technology and forwarding method thereof |
| CN113839703B (en) * | 2021-07-30 | 2024-03-08 | 长光卫星技术股份有限公司 | Flexible forwarding system combining frequency resource optimization and link dynamic management technology and forwarding method thereof |
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