CN202737876U - Simulation fiber repeater achieving multipath distribution - Google Patents
Simulation fiber repeater achieving multipath distribution Download PDFInfo
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- CN202737876U CN202737876U CN 201220121024 CN201220121024U CN202737876U CN 202737876 U CN202737876 U CN 202737876U CN 201220121024 CN201220121024 CN 201220121024 CN 201220121024 U CN201220121024 U CN 201220121024U CN 202737876 U CN202737876 U CN 202737876U
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Abstract
The utility model discloses a simulation fiber repeater achieving multipath distribution, which comprises a simulation fiber repeater near-end cluster, a simulation fiber repeater far-end cluster and a main fiber. The simulation fiber repeater provided by the utility model has the beneficial effects of achieving multipath distribution and path combination; preventing base stations from being interfered by uplink noise during signal multipath distribution and path combination processes; overcoming the problem existing in a conventional engineering multi-split machine and characterized by the uplink noise interference in base stations; and reducing the laying of underground fibers and cables due to the fact that only one main transmission fiber is required; and thus lowering the engineering networking and constructing costs.
Description
Technical field
The utility model relates to communication technical field, is specifically related to a kind of optical fiber direct amplification machine.
Background technology
Optical fiber direct amplification machine mainly comprises analog optical fiber direct amplification machine and digital fiber direct amplification machine, and prior art situation separately is described below:
A. analog optical fiber direct amplification machine, use on the engineering at present many be that one-to-one, one drag two and drag three, the analog optical fiber direct amplification machine since near-end carried out light shunt, close the road, in optical fiber, transmit behind the radiofrequency signal modulated light wave, the noise that produces after its demodulation increases along with near-end machine light way along separate routes becomes how much multiples, the lifting of upstream noise will produce severe jamming to the base station, and this has just limited analog optical fiber direct amplification machine one and has dragged many communication system architectures;
B. digital fiber direct amplification machine, at present existing use on the engineering, its major advantage is to have overcome the analog optical fiber direct amplification machine upstream noise interference base station problem that present engineering is used, realize that one drags many or other networking modes, but its complicated structure, cost are very high, and the buying production cycle is longer, the engineering feedback stability has much room for improvement at present, and these have limited its large-scale engineering networking.
The utility model content
The utility model purpose provides a kind of analog optical fiber direct amplification machine that suppresses the distribution of upstream noise stack realization multichannel based on Coarse Wavelength Division Multiplexing (CWDM), can realize the multichannel distribution, close the road, suppress upstream noise to the interference of base station, and reduce underground optical fiber cable laying construction, reduce the engineering networking cost.
In order to realize above purpose, the utility model provides a kind of analog optical fiber direct amplification machine of realizing that multichannel is distributed, it is characterized in that, comprising:
An analog optical fiber machine near-end group of planes comprises: the radio frequency multi-path power divider, it closes road port and connects the base station, each minute road port connect respectively a near-end modulation /demodulation transceiver module; Several near-end modulation /demodulation transceiver modules, an end separately connects a minute road port of described radio frequency multi-path power divider, and the other end connects a minute road port of near-end Coarse Wave Division Multiplexer; The near-end Coarse Wave Division Multiplexer, it closes road port and connects trunk optical fiber;
An analog optical fiber machine far-end group of planes comprises: the far-end Coarse Wave Division Multiplexer, it closes road port and connects trunk optical fiber, each minute road port connect respectively an end of a far-end modulation /demodulation transceiver module; Several far-end modulation /demodulation transceiver modules, the other end separately connects a LNA, power amplification integrated radio frequency power amplification module; Several LNA, power amplification integrated radio frequency power amplification module, the other end separately connects an indoor radio-frequency (RF) passive distribution system network;
Trunk optical fiber, a two-way connecting analog optical fiber machine near-end group of planes and an analog optical fiber machine far-end group of planes.
As further technical scheme, described near-end modulation /demodulation transceiver module and far-end modulation /demodulation transceiver module are the light emission, receive integrated modulation /demodulation transceiver module.
As further technical scheme, described trunk optical fiber adopts the single mode single-core fiber.
As further technical scheme, described radio frequency multi-path power divider is eight power splitters, and described near-end modulation /demodulation transceiver module, far-end modulation /demodulation transceiver module, LNA, power amplification integrated radio frequency power amplification module are eight.
The beneficial effects of the utility model are: a. realizes the multichannel distribution, closes the road; B. the road is distributed, closed to the signal multichannel, and its upstream noise can not produce the base station and disturb, and can overcome present engineering is dragged many upstream noises interference base station with machine one problem; C. only need a backbone transport optical fiber, it reduces underground optical fiber cable lays, and reduces engineering networking, construction cost.
Description of drawings
Fig. 1 is the formation schematic diagram of the optical fiber direct amplification machine that the utility model proposes.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
As shown in Figure 1, the optical fiber direct amplification machine that present embodiment provides comprises: an analog optical fiber machine near-end group of planes, an analog optical fiber machine far-end group of planes and trunk optical fiber (being denoted as SMF among Fig. 1), the two-way connecting analog optical fiber of a trunk optical fiber machine near-end group of planes and an analog optical fiber machine far-end group of planes.Wherein, an analog optical fiber machine near-end group of planes comprises radio frequency multi-path power divider, near-end modulation /demodulation transceiver module (being denoted as OT1/OR2 to OT15/OR16 among Fig. 1), near-end Coarse Wave Division Multiplexer (being denoted as CWDM among Fig. 1).An analog optical fiber machine far-end group of planes comprises LNA, power amplification integrated radio frequency power amplification module (being denoted as LAN/PA-1 to LAN/PA-8 among Fig. 1), far-end modulation /demodulation transceiver module (being denoted as OR1/OT2 to OR15/OT16 among Fig. 1), far-end Coarse Wave Division Multiplexer (being denoted as CWDM among Fig. 1).Near-end modulation /demodulation transceiver module and far-end modulation /demodulation transceiver module are the light emission, receive integrated modulation /demodulation transceiver module.Trunk optical fiber adopts the single mode single-core fiber.
The operation principle of above-mentioned optical fiber direct amplification machine is described as follows:
At base station machine room, downlink radio-frequency signal is coupled into the radio frequency multi-path power divider by feeder line, is designed to eight the tunnel in the present embodiment, i.e. eight power splitters; Every road radiofrequency signal is the near-end modulation /demodulation transceiver module by different center light wave bands respectively, modulated optical carrier, and eight center wave bands are respectively 1470nm in the present embodiment, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm, 1610nm; After optical carrier after the modulation is multiplexed into trunk single mode single-core fiber by the first Coarse Wave Division Multiplexer, be transferred to capped community by monomode fiber; Hold in community, optical carrier goes out different-waveband (1470nm by far-end Coarse Wave Division Multiplexer demultiplexing, 1490nm, 1510nm, 1530nm, 1550nm, 1570nm, 1590nm, 1610nm) light carrier, arrive respectively far-end modulation /demodulation transceiver module, carry out the photoelectricity demodulation, radiofrequency signal after the demodulation enters respectively different indoor radio-frequency (RF) passive distribution system networks after passing through LNA, power amplification integrated radio frequency power amplification module (LAN/PA-1 to LAN/PA-8) amplification, filtering, carries out indoor wireless networks and covers.
Hold in community, upward signal is sent to LNA by indoor radio-frequency (RF) passive distribution system network signal, power amplification integrated radio frequency power amplification module carries out filtering, amplify, through far-end modulation /demodulation transceiver module radiofrequency signal is modulated on the light carrier again, multichannel different-waveband (1230nm after the modulation, 1250nm, 1270nm, 1290nm, 1310nm, 1330nm, 1350nm, 1370nm) optical carrier be multiplexed in the trunk optical fiber by CWDM, and then be transferred to an analog optical fiber machine near-end group of planes, through near-end CWDM demultiplexing, the light carrier of demultiplexing demodulates multi-channel rf information by corresponding with it near-end modulation /demodulation transceiver module, and multiple signals are coupled to the base station end by RF Power Splitter and feeder line again.
The beneficial effect that the utility model is created is: a. realizes the multichannel distribution, closes the road; B. the road is distributed, closed to the signal multichannel, and its upstream noise can not produce the base station and disturb, and can overcome present engineering is dragged many upstream noises interference base station with machine one problem; C. only need a backbone transport optical fiber, it reduces underground optical fiber cable lays, and reduces engineering networking, construction cost.
Claims (4)
1. an analog optical fiber direct amplification machine of realizing that multichannel is distributed is characterized in that, comprising:
An analog optical fiber machine near-end group of planes comprises: the radio frequency multi-path power divider, it closes road port and connects the base station, each minute road port connect respectively a near-end modulation /demodulation transceiver module; Several near-end modulation /demodulation transceiver modules, an end separately connects a minute road port of described radio frequency multi-path power divider, and the other end connects a minute road port of near-end Coarse Wave Division Multiplexer; The near-end Coarse Wave Division Multiplexer, it closes road port and connects trunk optical fiber;
An analog optical fiber machine far-end group of planes comprises: the far-end Coarse Wave Division Multiplexer, it closes road port and connects trunk optical fiber, each minute road port connect respectively an end of a far-end modulation /demodulation transceiver module; Several far-end modulation /demodulation transceiver modules, the other end separately connects a LNA, power amplification integrated radio frequency power amplification module; Several LNA, power amplification integrated radio frequency power amplification module, the other end separately connects an indoor radio-frequency (RF) passive distribution system network;
Trunk optical fiber, a two-way connecting analog optical fiber machine near-end group of planes and an analog optical fiber machine far-end group of planes.
2. the analog optical fiber direct amplification machine of realization multichannel distribution according to claim 1 is characterized in that, described near-end modulation /demodulation transceiver module and far-end modulation /demodulation transceiver module are the light emission, receive integrated modulation /demodulation transceiver module.
3. the analog optical fiber direct amplification machine of realization multichannel distribution according to claim 2 is characterized in that, described trunk optical fiber adopts the single mode single-core fiber.
4. the analog optical fiber direct amplification machine that distributes of realization multichannel according to claim 3, it is characterized in that, described radio frequency multi-path power divider is eight power splitters, and described near-end modulation /demodulation transceiver module, far-end modulation /demodulation transceiver module, LNA, power amplification integrated radio frequency power amplification module are eight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121024 CN202737876U (en) | 2012-03-27 | 2012-03-27 | Simulation fiber repeater achieving multipath distribution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220121024 CN202737876U (en) | 2012-03-27 | 2012-03-27 | Simulation fiber repeater achieving multipath distribution |
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| CN202737876U true CN202737876U (en) | 2013-02-13 |
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| CN 201220121024 Expired - Fee Related CN202737876U (en) | 2012-03-27 | 2012-03-27 | Simulation fiber repeater achieving multipath distribution |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016155295A1 (en) * | 2015-03-31 | 2016-10-06 | 京信通信技术(广州)有限公司 | Active distributed antenna system and relay-end machine thereof |
| CN107425901A (en) * | 2017-04-21 | 2017-12-01 | 广东轻工职业技术学院 | A kind of mobile communication passive signal covering system and method |
| CN110034811A (en) * | 2019-05-31 | 2019-07-19 | 福建瑞波信息技术有限公司 | Mobile communication indoor signal enhancing device and its Enhancement Method |
-
2012
- 2012-03-27 CN CN 201220121024 patent/CN202737876U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016155295A1 (en) * | 2015-03-31 | 2016-10-06 | 京信通信技术(广州)有限公司 | Active distributed antenna system and relay-end machine thereof |
| US9838886B2 (en) | 2015-03-31 | 2017-12-05 | Comba Telecom Technology (Guangzhou) Co., Ltd. | Active distributed antenna system and relay unit thereof |
| CN107425901A (en) * | 2017-04-21 | 2017-12-01 | 广东轻工职业技术学院 | A kind of mobile communication passive signal covering system and method |
| CN107425901B (en) * | 2017-04-21 | 2019-10-25 | 广东轻工职业技术学院 | A kind of mobile communication passive signal covering system and method |
| CN110034811A (en) * | 2019-05-31 | 2019-07-19 | 福建瑞波信息技术有限公司 | Mobile communication indoor signal enhancing device and its Enhancement Method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20180327 |