CN201733304U - Digitalized narrow routing radio relay station - Google Patents
Digitalized narrow routing radio relay station Download PDFInfo
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- CN201733304U CN201733304U CN2010201649670U CN201020164967U CN201733304U CN 201733304 U CN201733304 U CN 201733304U CN 2010201649670 U CN2010201649670 U CN 2010201649670U CN 201020164967 U CN201020164967 U CN 201020164967U CN 201733304 U CN201733304 U CN 201733304U
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- interface circuit
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- relay station
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Abstract
The utility model discloses a digitalized narrow routing radio relay station, which relates to the narrow-band wireless transmission technology and improves stable transmission distance of wireless signals. The digitalized narrow routing radio relay station comprises a radio frequency signal processing part, a base band signal processing part, a data processing part, a radio frequency antenna and an interface circuit part, and the interface circuit part realizes input and output of various voice and data signals. When the digitalized narrow routing radio relay station is used as a transmission end in working procedure, the base band signal processing part adopts a low-density encoding chip for encoding, and when the digitalized narrow routing radio relay station is used as a receiving end, the base band signal processing part adopts a low-density decoding chip for decoding. By adopting the low-density interference-resistant encoding technology, and effectively combining mature COFDM technology in existing wireless communication with the encoding technology, the digitalized narrow routing radio relay station guarantees non-loss stable transmission for long-distance signals (for as long as 70 kilometers), and is used in wireless communication.
Description
Technical field
The utility model relates to a kind of arrowband Radio Transmission Technology, belongs to wireless communication field.
Background technology
Radio communication is the most active and development one of field the most rapidly in the current communications field, also is that human lives and social development are had one of science and technology field of significant impact.Transmit data and there are many unfavorable factors such as construction cost height, limited coverage area in voice signal in wired mode, especially remote mountain areas, forest zone, island or inclement condition zone etc., wire transmission can't or be difficult to carry out, and using rfid technology can remedy above-mentioned deficiency.The existing wireless communications technology is comparative maturity, and such as the technology all standardization of COFDM (Coded Orthogonal Frequency Division Multiplexing (COFDM)) technology in each side such as modulation, radio frequency, carrier waves, but existing technological difficulties are how to make the long stable distance transmission of wireless signal.
The utility model content
The purpose of this utility model provides a kind of digitlization narrow road by radio relay station, to improve the stable transfer distance of wireless signal.It is made up of radiofrequency signal processing section 1, base band signal process part 2, data processing section 3, radio-frequency antenna 4 and interface circuit part 5;
Interface circuit part 5: realize the access and the output of various voice-and-data signals;
Data processing section 3: will be encapsulated as corresponding data format according to Data Transport Protocol from the Frame that interface circuit part 5 is received, and be forwarded to base band signal process part 2 then and handle; Maybe will after sealing off the dress conversion process according to Data Transport Protocol, the data that base band signal process part 2 is received send to interface circuit part 5;
Base band signal process part 2: receive data, encode, channel interleaving, COFDM modulation and channel synchronization handle from data processing section 3; Or receive data from radiofrequency signal processing section 1, decode, do channel synchronization after channel deinterleaving, COFDM rectification and the equilibrium and handle;
Radiofrequency signal processing section 1: will do to carry out carrier wave, frequency conversion, signal processing and amplifying after the D/A conversion from the digital signal of base band signal process part 2, and finally send through radio-frequency antenna 4; Maybe will carry out filtering, low noise amplification, frequency-conversion processing, give base band signal process part 2 then from the signal that radio-frequency antenna 4 receives;
Described base band signal process part 2 adopts the low-density coding chip to encode, and adopts the low-density decoding chip to decode.
The utility model is during in the course of the work as transmitting terminal, and base band signal process part 2 adopts the low-density coding chips to encode, and adopts the low-density decoding chip to decode during as receiving terminal.Owing to used low-density anti-interference coding technology; and make it well to have incorporated mature C OFDM technology in the existing wireless communications; for remote digital signal lossless consumption stable transfer (reaching 70 kilometers) provides safeguard; and can in communication, utilize multiple advanced technology means such as signal encryption, terminal protection to make whole communication process safe and reliable, the wireless communication technology product of high performance-price ratio finally is provided for the side of application.The utility model makes transmission quantity be tending towards theoretical value (6.4 bps/kilo hertz) for remote digital signal transmission (existing signal significantly to decay) provides safeguard.When being arranged, noise jamming can be automatically brought to another transfer rate, and can fast quick-recovery communication channel when mistake occurring.Owing to used low-density anti-interference coding technology, guaranteed that transmission rate reaches 2Mbps, and extended transmission distance as far as 70KM.
Description of drawings
Fig. 1 is a structural representation of the present utility model.Fig. 2 and Fig. 3 are the structural representations of execution mode three.
Embodiment
Embodiment one: specify present embodiment below in conjunction with Fig. 1.Present embodiment is made up of radiofrequency signal processing section 1, base band signal process part 2, data processing section 3, radio-frequency antenna 4 and interface circuit part 5;
Interface circuit part 5: realize the access and the output of various voice-and-data signals;
Data processing section 3: will be encapsulated as corresponding data format according to Data Transport Protocol from the Frame that interface circuit part 5 is received, and be forwarded to base band signal process part 2 then and handle; Maybe will after sealing off the dress conversion process according to Data Transport Protocol, the data that base band signal process part 2 is received send to interface circuit part 5;
Base band signal process part 2: receive data, encode, channel interleaving, COFDM modulation and channel synchronization handle from data processing section 3; Or receive data from radiofrequency signal processing section 1, decode, do channel synchronization after channel deinterleaving, COFDM rectification and the equilibrium and handle;
Radiofrequency signal processing section 1: will do to carry out carrier wave, frequency conversion, signal processing and amplifying after the D/A conversion from the digital signal of base band signal process part 2, and finally send through radio-frequency antenna 4; Maybe will carry out filtering, low noise amplification, frequency-conversion processing, give base band signal process part 2 then from the signal that radio-frequency antenna 4 receives;
Described base band signal process part 2 adopts the low-density coding chip to encode, and adopts the low-density decoding chip to decode.Described low-density coding chip and low-density decoding chip use the anti-interference code encoding/decoding mode on the communication equipment, its encoding and decoding principle is " based on an Infinite Cyclic in the terminal space of even number; the size that forms with minimum reaches to greatest extent ", owing to used above-mentioned code encoding/decoding mode, therefore the antijamming capability and the stability of signal are strengthened greatly, can realize growing the reliable transmission of distance and unattenuated.The programmable chip that said chip uses U.S. XILINX company to produce.
Embodiment two: specify present embodiment below in conjunction with Fig. 1.Local frequency in the present embodiment in the radiofrequency signal processing section 1 is 394-410MHz or 434-450MHz, thereby realizes wireless narrow band transmission.This frequency is communicated by letter with the interior long stable distance of frequency range that the combination of low-density code encoding/decoding mode makes present embodiment can reliably be implemented in 394-410MHz and 434-450MHz.
Embodiment three: specify present embodiment below in conjunction with Fig. 2 and Fig. 3.The difference of present embodiment and execution mode one is: data processing section 3 comprises that also IP seals dress and removes package module 3-1 and Ethernet processing module 3-2, receives the data that Ethernets pass over and makees the IP bag and go encapsulation process from interface circuit part 5 realizing; Or the data that receive from base band signal process part 2 are carried out IP seal the dress processing and send data to Ethernet by interface circuit part 5.Data processing section comprises devices such as central processor CPU, storage RAM, protocol processor.
As shown in Figure 2, with the carrying Ethernet service is example, remove two layers of frame head earlier from the Ethernet data that interface circuit part 5 passes over, the data that are reduced to the IP bag go to be sent to coding module after the encapsulation by the IP bag, data are the complete coding of formation through the low-density coding and after carrying out channel interleaving, COFDM modulation, channel makes data disperse according to certain rules to send synchronously again, carries out D/A conversion, frequency conversion, carrier wave, signal at last and amplifies the back and form radiofrequency signal and send.
As shown in Figure 3, the RF processing unit received RF signal is after filtering, low noise amplification, frequency conversion, filtering, A/D conversion back form digital signal, channel synchronously, COFDM separates and be in harmonious proportion equilibrium, channel deinterleaving, low-density and decode and be reduced to normal data frames, by data processing unit three layer data are sealed dress ether frame head, 3-2 finally sends to interface circuit part 5 by the Ethernet processing module.
Embodiment four: specify present embodiment below in conjunction with Fig. 1.The difference of present embodiment and execution mode one is: interface circuit part 5 comprises business interface circuit 5-1 and management interface circuit 5-2, business interface circuit 5-1 selects the interface circuit of Ethernet RJ45 and E1 type, can satisfy the access of various voice-and-data business; The management interface circuit is selected the RS232 interface circuit, with configuration and the maintenance management of carrying out business software.
Claims (4)
1. the digitlization narrow road is by radio relay station, and it is made up of radiofrequency signal processing section (1), base band signal process part (2), data processing section (3), radio-frequency antenna (4) and interface circuit part (5);
Interface circuit part (5): realize the access and the output of various voice-and-data signals;
Data processing section (3): will be encapsulated as corresponding data format according to Data Transport Protocol from the Frame that interface circuit part (5) is received, and be forwarded to base band signal process part (2) then and handle; Maybe will after sealing off the dress conversion process according to Data Transport Protocol, the data that base band signal process part (2) is received send to interface circuit part (5);
Base band signal process part (2): receive data, encode, channel interleaving, COFDM modulation and channel synchronization handle from data processing section (3); Or receive data from radiofrequency signal processing section (1), decode, do channel synchronization after channel deinterleaving, COFDM rectification and the equilibrium and handle;
Radiofrequency signal processing section (1): will do to carry out carrier wave, frequency conversion, signal processing and amplifying after the D/A conversion from the digital signal of base band signal process part (2), and finally send through radio-frequency antenna (4); Maybe will carry out filtering, low noise amplification, frequency-conversion processing, give base band signal process part (2) then from the signal that radio-frequency antenna (4) receives;
It is characterized in that described base band signal process part (2) adopts the low-density coding chip to encode, and adopts the low-density decoding chip to decode.
2. digitlization narrow road according to claim 1 is characterized in that by radio relay station the local frequency in the radiofrequency signal processing section (1) is 394-410MHz or 434-450MHz.
3. digitlization narrow road according to claim 1 is by radio relay station, it is characterized in that data processing section (3) comprises that also IP seals dress and goes package module (3-1) and Ethernet processing module (3-2), receive the data that Ethernet passes over and be IP and wrap and go encapsulation process from interface circuit part (5) realizing; Or the data that receive from base band signal process part (2) are carried out IP seal the dress processing and send data to Ethernet by interface circuit part (5).
4. digitlization narrow road according to claim 1 is by radio relay station, it is characterized in that interface circuit part (5) comprises business interface circuit (5-1) and management interface circuit (5-2), business interface circuit (5-1) is selected the interface circuit of EthernetRJ45 and E1 type, and the management interface circuit is selected the RS232 interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201649670U CN201733304U (en) | 2010-04-21 | 2010-04-21 | Digitalized narrow routing radio relay station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201649670U CN201733304U (en) | 2010-04-21 | 2010-04-21 | Digitalized narrow routing radio relay station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733304U true CN201733304U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201649670U Expired - Fee Related CN201733304U (en) | 2010-04-21 | 2010-04-21 | Digitalized narrow routing radio relay station |
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| Country | Link |
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| CN (1) | CN201733304U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664776A (en) * | 2012-04-20 | 2012-09-12 | 北京弥佳电子科技有限公司 | Substation, signal transmission system and method, and network topology thereof |
-
2010
- 2010-04-21 CN CN2010201649670U patent/CN201733304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664776A (en) * | 2012-04-20 | 2012-09-12 | 北京弥佳电子科技有限公司 | Substation, signal transmission system and method, and network topology thereof |
| CN102664776B (en) * | 2012-04-20 | 2015-06-17 | 北京弥佳电子科技有限公司 | Substation, signal transmission system and method, and network topology thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20140421 |