CN109246379A - A kind of wired TV network transmission wireless signal method and system - Google Patents
A kind of wired TV network transmission wireless signal method and system Download PDFInfo
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- CN109246379A CN109246379A CN201811415429.1A CN201811415429A CN109246379A CN 109246379 A CN109246379 A CN 109246379A CN 201811415429 A CN201811415429 A CN 201811415429A CN 109246379 A CN109246379 A CN 109246379A
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- 230000008054 signal transmission Effects 0.000 claims abstract description 6
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/10—Adaptations for transmission by electrical cable
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
Wireless signal on wireless signal access device is carried out down conversion process including step, keeps carrier bandwidths constant, reduces signal carrier frequency to cable TV network signal carrier-frequency range by a kind of wired TV network transmission wireless signal method；Signal after frequency-conversion processing is accessed at the cable TV network optical node of front end, is transmitted in passive coaxial network together with cable TV signal；Signal after frequency-conversion processing is delivered at the cable TV network optical node of terminal, raising frequency processing is carried out, keeps carrier bandwidths constant, promotion signal carrier frequency to wireless signal transmission frequency；Wireless signal after raising frequency is delivered at the cable TV network optical node of terminal, sends wireless signal via terminal antenna.A kind of wired TV network transmission wireless signal system is also disclosed, the wireless signal that cable TV transmission network network is transmitted can be would be unsuitable for and carry out frequency-conversion processing, transmitted by cable TV network, realize the inexpensive rapid Cover of wireless signal.
Description
Technical field
The present invention relates to a kind of transmission technologys of wireless signal, more particularly, to a kind of wired TV network transmission wireless communication
Number method and system.
Background technique
In life and work of today, wireless signal is ubiquitous, also just because of people in various activities to nothing
The demand of line signal is increasing, and convenience and importance promote the covering of wireless signal more and more extensive.But wireless
In the covering of signal, the mainly covering of WIFI and 5G signal, since city dweller user room is very intensive, especially hotel,
Apartment-type rental housing, there are serious interference problems using different WIFI signals for different user, theoretically, in a region, only
There can be 3 WIFI AP can be with noiseless independent use.If neighboring user uses same set of WIFI RF signal, can be in wine
The same area reduction WIFI SSID quantity in shop, apartment, to reduce the interference between WIFI RF signal.
In the deployment and the network coverage of 5G, since 5G RF signal spectrum is high frequency radio signals, signal ability ten through walls
It is poor to divide, and outdoor base station is difficult to effectively be covered to indoor, generally requires deployment coaxial feeder system, is wanted with meeting the network coverage
It asks.
Cable TV coaxial distribution network comes into huge numbers of families, using wired TV network transmission WIFI RF signal,
It is same set of WIFI RF signal since neighboring user is received, WIFI AP can be reduced in the quantity in the same region, thus
Reduce the interference between WIFI AP.There has been no the mature transfer functions using cable TV network realization wireless signal at present
Technology.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of wired TV network transmission wireless signal methods, would be unsuitable for
Wireless signal that cable TV transmission network network is transmitted carries out frequency-conversion processing, be run through cable TV coaxial distribute network into
Row transmission, realizes the inexpensive rapid Cover of wireless signal.
The technical solution of the invention is as follows:
A kind of wired TV network transmission wireless signal method, wherein the following steps are included:
Wireless signal on wireless signal access device is carried out down conversion process, keeps carrier bandwidths constant by step 1, drop
Low signal carrier frequency is to cable TV network signal carrier-frequency range；
Step 2 accesses to the signal after frequency-conversion processing at the cable TV network optical node of front end, with cable television
Signal transmits in passive coaxial network together；
Signal after frequency-conversion processing is delivered at the cable TV network optical node of terminal, is risen by step 3
Frequency is handled, and keeps carrier bandwidths constant, promotion signal carrier frequency to wireless signal transmission frequency；
Wireless signal after raising frequency is delivered at the cable TV network optical node of terminal by step 4, via terminal day
Line sends wireless signal.
The present invention also provides a kind of wired TV network transmission wireless signal systems, wherein fills including signal front-end processing
It sets, cable TV network and Signal Terminal processing unit；The first signaling interface and wireless communication of the signal front end processing device
The connection of number access device, second signal interface are connected to the cable television network at the optical node of the cable TV network
Network；First signaling interface of the Signal Terminal processing unit has described in being connected at the optical node of the cable TV network
Line TV network, second signal interface are connect with terminal antenna；At the signal front end processing device and the Signal Terminal
It manages and is equipped with frequency converter in device.
It is learnt by described above, the present invention has the advantage that really
A kind of wired TV network transmission wireless signal method and system of the invention, can would be unsuitable for cable television
The wireless signal that transmission network is transmitted carries out frequency-conversion processing, is run through cable TV coaxial distribution network and is transmitted,
Realize the inexpensive rapid Cover of wireless signal.The present invention utilizes radio frequency processing technology, would be unsuitable for cable TV transmission network
WIFI that network is transmitted, 5G RF signal carry out frequency-conversion processing, make it to distribute network by cable TV coaxial and are passed
It is defeated, realize the inexpensive rapid Cover of WIFI, 5G signal.
Detailed description of the invention
Fig. 1 is the process step schematic diagram of present pre-ferred embodiments；
Fig. 2 is the structural schematic diagram of cable TV network；
Fig. 3 is the structural schematic diagram of the signal front end processing device of present pre-ferred embodiments；
Fig. 4 is the structural schematic diagram of the Signal Terminal processing unit of present pre-ferred embodiments；
Fig. 5 is the structural schematic diagram of centrally connected power supply；
Fig. 6 is the structural schematic diagram of the wired TV network transmission wireless signal system of presently preferred embodiments of the present invention.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment.
The present invention utilizes RF up-converter technology, down-conversion technique, and it is wired to realize that WIFI RF signal, 5G RF signal pass through
TV passive coaxial distribution network is transmitted, and is distributed the network terminal by cable TV coaxial and emitted and connect to aerial
It receives.
Cable TV network, mainly Coaxial distribution network network, and 5G feeder system physical structure having the same, by having
Line television distribution network transmits 5G signal, can fast implement the scale covering of 5G signal.
A kind of wired TV network transmission wireless signal method of the invention, in preferred embodiment, institute referring to Figure 1
Show, comprising the following steps:
Wireless signal on wireless signal access device is carried out down conversion process, keeps carrier bandwidths not by S101 step 1
Become, reduces signal carrier frequency to cable TV network signal carrier-frequency range；
S102 step 2 accesses to the signal after frequency-conversion processing at the cable TV network optical node of front end, and wired
TV signal transmits in passive coaxial network together；
Signal after frequency-conversion processing is delivered at the cable TV network optical node of terminal by S103 step 3, by its into
The processing of row raising frequency, keeps carrier bandwidths constant, promotion signal carrier frequency to wireless signal transmission frequency；
Wireless signal after raising frequency was delivered at the cable TV network optical node of terminal, via end by S104 step 4
Antenna is held to send wireless signal.
Wired TV network transmission wireless signal method present invention as described above, in preferred embodiment,
The wireless signal incoming end connection impedance adapter of wireless signal access device in S101 step 1 adjusts characteristic impedance, makes nothing
Line signal access device is adapted to the characteristic impedance of cable TV network；In S104 step 4, the cable television of the terminal
Impedance adapter is connected between network optical node and terminal antenna and adjusts characteristic impedance, makes terminal antenna and cable TV network
Characteristic impedance adaptation.
Wired TV network transmission wireless signal method present invention as described above, in preferred embodiment,
In S102 step 2, the wireless signal after the frequency reducing accesses to the cable TV network light section of front end again after power amplification
At point；In S103 step 3, the wireless signal after raising frequency carries out power amplification processing.
Wired TV network transmission wireless signal method present invention as described above, it is described in preferred embodiment
Cable TV network includes the transmission of uplink and downlink twocouese signal；At the cable TV network optical node of the front end, on
Capable wireless signal is transported to wireless signal access device, and emits via the emitter of wireless signal access device；In
At the cable TV network optical node of the terminal, the wireless signal of downlink is to receive via terminal antenna and be input to the end
The cable TV network optical node at end.
Wired TV network transmission wireless signal method present invention as described above, it is described in preferred embodiment
Wireless signal is WiFi signal and/or 5G signal.
The present invention also provides a kind of wired TV network transmission wireless signal system, in preferred embodiment, refer to
Shown in Fig. 6, including signal front end processing device, cable TV network and Signal Terminal processing unit；The signal front-end processing
First signaling interface of device is connect with wireless signal access device, and second signal interface is in the light of the cable TV network
The cable TV network is connected at node；First signaling interface of the Signal Terminal processing unit is in the cable television
The cable TV network is connected at the optical node of network, second signal interface is connect with terminal antenna；Before the signal
It holds and is equipped with frequency converter in processing unit and the Signal Terminal processing unit.
Wired TV network transmission wireless signal system present invention as described above, in preferred embodiment, in institute
It states in signal front end processing device, the first access port is connected with impedance adapter, and the impedance adapter connects the first front end
Inserter, first front end inserter connect front end low-converter, and the front end low-converter connects power amplifier, described
Power amplifier is connected to the second front end inserter, and second front end inserter is connect with mixer, the mixer output
Mouth is connect with the second signal interface of the signal front end processing device, forms front end receiver circuit；
In in the Signal Terminal processing unit, the second access port is connected with impedance adapter, the impedance adapter
Second terminal inserter is connected, the second terminal inserter connects power amplifier, and the power amplifier connects terminal
Upconverter, the terminal upconverter are connected with filter, and the filter is connected to first terminal inserter, and described first
Terminal inserter is connect with distributor, and the first signaling interface of the distributor input port and the Signal Terminal processing unit connects
It connects；Form terminal output loop；Coaxial cable power module is connected on the distributor.
Wired TV network transmission wireless signal system present invention as described above, it is described in preferred embodiment
It is connected with front end output loop between the first front end inserter and the second front end inserter of signal front end processing device, and it is described
Front end receiver circuit is in parallel；It is connected between the first terminal inserter and second terminal inserter of the Signal Terminal processing unit
There is terminal to receive circuit, it is in parallel with the terminal output loop.
Wired TV network transmission wireless signal system present invention as described above, it is described in preferred embodiment
Power amplifier is adjustable power amplifier, and the front end low-converter is variable frequency convertor, and the impedance adapter is adjustable
Impedance adapter.
Wired TV network transmission wireless signal system present invention as described above, in preferred embodiment, including
One signal front end processing device, the mixer input terminal connect cable TV signal, and output end is connected to front end
Cable TV network optical node, the cable TV network optical node of the terminal are connected with CATV terminal and multiple letters
Number terminal processing device.
It is now preferable with one of them of the wired TV network transmission wireless signal method and system of aforementioned present invention
For embodiment, technical essential each in above-mentioned technical proposal is illustrated, structure, function and the realization side of each technical essential
Formula can be individually used for illustrating the technology contents in above-mentioned technical characteristic.Wherein can according to the actual operation, setting section ginseng
Number numerical value, the present invention are not fully defined in the technical parameter of following setting:
Wherein: inserter A is the first front end inserter A, and inserter B is the second front end inserter B, and inserter C is first
Terminal inserter C, inserter D are second terminal inserter D；In following term, added with RF description, it is intended merely to indicate
The technology that the technical term is referred to is illustrated with RF relevant technology, and is not meant to be restriction.
The present invention utilizes RF up-converter technology, down-conversion technique, and it is wired to realize that wifi RF signal, 5G RF signal pass through
TV passive coaxial distribution network is transmitted, and is distributed the network terminal by cable TV coaxial and emitted and connect to aerial
It receives.
The cable TV network that the present invention relies on cable television optical transmitter and receiver, coaxial distribution system as shown in Fig. 2, be made of.
Cable TV signal from optical fiber is carried out photoelectric conversion by cable television optical transmitter and receiver, and RF signal carries out in Coaxial distribution network network
Transmission.Currently, general cable TV network is to a variety of RF signals (anolog TV signals, digital television signal, broadband signal etc.)
Carry out downstream transmission by frequency division multiplexing mode, WIFI/5G RF signal of the invention as cable TV network bearer service,
It is transmitted with the original business of cable TV network by frequency division multiplexing, since WIFI/5G RF upstream rf signal transmission bandwidth is opposite
Wider (typically larger than 100MHz) has exceeded the uplink carrier bandwidths of usual cable TV network, and therefore, the present invention relies on
The cable TV network of passive coaxial, at this stage, usual cable TV network run commercial city Large scale construction passive coaxial point
Distribution network, every optical node cover 50 to 150 family users, and passive coaxial network supports the customized bandwidth of uplink and downlink carrier bandwidths,
WIFI/5G transmission bandwidth requirement can be supported.
The present invention is the application system comprising radiofrequency signal processing and radio signal transmission, mainly includes following portion
Point:
RF signal front end processing device carries out frequency conversion to WIFI/5G downstream RF signals at cable TV network optical node
Processing makes it suitable for cable television distribution network transmission, and the downstream RF signals after frequency conversion is inserted into cable TV network.It will
WIFI/5G uplink signal (coming from RF Signal Terminal processing unit) from cable TV network carries out upconversion process, extensive
The multiple original frequency of WIFI/5G, and give to WIFI/5G access device and handled.Its structure and function is as shown in Figure 3.
Main component function are as follows:
Impedance adapter 75 ohm that WIFI/5G 50 Ohms interfaces for connecing antenna are adapted to cable TV network connect
Mouthful；
WIFI/5G uplink signal is inserted by inserter A, and when uplink signal is inserted into, uplink signal has greater attenuation, downlink letter
Number basically no attenuation, uplink and downlink has enough isolations, and insertion decaying, isolation are ensured by inserter specification；
WIFI/5G RF signal is carried out frequency down to f1 by low-converter, and f1 is by cable TV network operator according to frequency
Spectrum planning is set, such as 900MHz, since f1 is planned by different cable TV network operators, low-converter palpus
Support frequency adjustable；
PA is RF power amplifier；
WIFI/5G downlink signal is inserted by inserter B, and downlink signal has a greater attenuation, but uplink signal by substantially without
Decaying, uplink and downlink signals have enough isolations, and insertion decaying, isolation are ensured by inserter specification；
Filter is filter, which filters out WIFI/5G uplink signal f2, is filtered out other in cable TV network
The return path signal of business.Due to filter filtering bandwidth and frequency according to the planning of different cable TV network operators frequency spectrum and
The difference of WIFI, 5G business and it is different, the present invention used in filter be different frequency and bandwidth different model filter card.
It is selected for concrete engineering application.
Upconverter is by WIFI/5G upstream rf signal f2 progress frequency raising frequency to the original frequency spectrum of WIFI/5G, such as
WIFI2.4GHz, 5.8GHz, 5G frequency spectrum, f2 are set by cable TV network operator according to frequency spectrum planning, such as 900MHz；
Up-conversion must support input rf signal frequency adjustable, export the WIFI/5G business frequency spectrum for formulation.
Mixer C is mixed the original business RF signal of cable television with WIFI/5G signal by frequency division multiplexing.
RF Signal Terminal processing unit, at cable TV subscriber's terminal, the device is by signal front end processing device frequency conversion
Rear WIFI/5G RF signal carries out frequency-conversion processing, restores the original frequency of WIFI/5G RF signal, and by antenna in the air into
Row transmitting；The device will carry out frequency-conversion processing from the received WIFI/5G user RF signal of antenna, make it suitable for cable television
Network processes, and handled upwardly through wired TV network transmission to RF front end signal processing unit.Its structure and function
See Fig. 4.
The device is similar with signal front end processing device structure, and signal processing flow is on the contrary, main component function are as follows:
Distributor E by cable television service RF signal (service signal containing WIFI/5G) take all the way signal to Signal Terminal at
Device is managed, and the uplink WIFI/5G RF signal of Signal Terminal processing unit is mixed into cable TV network.
WIFI/5G uplink signal is inserted by inserter C；
WIFI/5G downlink signal is inserted into antenna by inserter D；
WIFI/5G antenna and cable TV network are carried out impedance with cable by impedance adapter；
Upconverter, low-converter are identical as the function of signal front end processing device
Filter is filter, which filters out WIFI/5G downlink signal f1, is filtered out other in cable TV network
The downlink signal of business.
Power supply is inserted into cable television distribution network and fed by power supply management module at cable television optical node,
And it is powered by cable television distribution network to RF Signal Terminal processing unit.See Fig. 5.
It is implemented as follows:
System framework figure is shown in Fig. 6, and cable TV signal accesses the TV input interface of front end signal processing unit, with WIFI/
5G business through cable television distribution network is transferred to subscriber household after being mixed by frequency division multiplexing, and cable television distribution network must be nothing
Source coaxial network disposes RF Signal Terminal processing unit, signal front-end processing dress in the region for needing WIFI/5G signal to cover
Setting with Signal Terminal processing unit is one-to-many relationship, realizes the quick scale covering of WIFI/5G business.
WIFI/5G service signal process flow is as follows:
The antennal interface of WIFI/5G access device (WIFI AP, 5G remote end module) is connected to signal front end processing device
WIFI/5G RF input interface will carry out impedance through impedance adapter, and be by characteristic impedance such as signal level 100dBuV
50 ohm of interface is adapted to 75 Omega cable interfaces of cable TV network；
The downlink signal of WIFI/5G RF pass through inserter A, after inserter A, downlink signal basically no attenuation, such as
100dBuV；
Downlink signal passes through low-converter, downlink signal carrier frequency is moved to f1, such as 900MHz, carrier bandwidths are constant, such as
Carrier bandwidths are the 5G signal of 100MHz；
Downlink signal is inserted into cable TV network through inserter B after PA amplifies, to obtain higher uplink and downlink isolation,
Such as the inserter of 12dB, former cable TV signal is 105dBuV, the decaying of mixer C about 4dB, cable TV network preequalization
6dB, it is 23dB, PA mould that since f1 is arranged in the high-end frequency spectrum of cable TV network, then the gain of PA, which is 105+12+4+6-100,
Block must support preequalization.
WIFI/5G downlink signal is transferred to user terminal through cable television distribution network, and signal strength is about 60dBuV.
WIFI/5G downlink signal is sent into RF Signal Terminal processing unit.
Signal Terminal processing unit takes electricity from cable TV coaxial net, by inserter C, connects the main mouth of inserter C,
Signal basically no attenuation, through wave filter, filters other business (such as TV, data service) downlink signals in cable TV network,
Only f1 is restored to WIFI/5G business frequency spectrum (such as 2.4GHz WIFI by surplus WIFI/5G service signal f1, up-conversion.5.8GHz
WIFI, 3.5GHz 5G), it is amplified through PA module, connects the bifurcations of inserter D, send through impedance adapter to antenna, such as insert
Enter device and decay to 12dB, according to the requirement of WIFI/5G signal coverage strength, PA gain is set.PA must support gain to be arranged, can also be with
Using high-gain PA, WIFI/5G signal strength is adjusted by inserting attenuator.
The subscriber signal of WIFI/5G from Signal Terminal processing unit antenna connects inserter D after impedance
Main mouth, signal basically no attenuation, downconverted conversion frequency be f2, such as 900MHz.Due to using signal inserter, have higher
Isolation, f1 and f2 can be configured to identical.It is inserted into after PA amplifies by inserter C, insertion loss such as 12dB, adjusts PA
Gain makes up to 105dBuV, and high-gain PA can be used, and carries out output RF signal strength adjusting by inserting attenuator.
WIFI/5G business uplink signal is sent through wired TV network transmission to signal front end processing device, connects inserter B
Main mouth, signal strength is about 60dBuV, through wave filter, filters the return path signal of other business in cable TV network, only
Surplus uplink f2 signal, amplifies by PA, branch's button of connection inserter A, and insertion loss about 12dB is remote according to WIFI AP or 5G
The input signal strength requirement at end, adjusts PA attenuator, obtains suitable WIFI/5G business return path signal.
The present invention is cooperateed with by RF signal front end processing device and Signal Terminal processing unit, by the antenna RF of WIFI/5G
Interface has been distributed at the terminal of cable TV network by cable TV network, and can be in cable television passive distribution network
Each terminal button carries out signal covering.So as to solve the problems, such as WIFI signal interference, 5G rapid Cover.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, made equivalent changes and modifications under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.
Claims (10)
1. a kind of wired TV network transmission wireless signal method, which comprises the following steps:
Wireless signal on wireless signal access device is carried out down conversion process, keeps carrier bandwidths constant, reduces letter by step 1
Number carrier frequency is to cable TV network signal carrier-frequency range；
Step 2 accesses to the signal after frequency-conversion processing at the cable TV network optical node of front end, with cable TV signal
It is transmitted in passive coaxial network together；
Signal after frequency-conversion processing is delivered at the cable TV network optical node of terminal by step 3, is carried out at raising frequency
Reason keeps carrier bandwidths constant, promotion signal carrier frequency to wireless signal transmission frequency；
Wireless signal after raising frequency is delivered at the cable TV network optical node of terminal, sends out via terminal antenna by step 4
Send wireless signal.
2. wired TV network transmission wireless signal method as described in claim 1, which is characterized in that the nothing in step 1
The wireless signal incoming end connection impedance adapter of line signal access device adjusts characteristic impedance, keeps wireless signal access device suitable
It is assigned to the characteristic impedance of cable TV network；In step 4, the cable TV network optical node and terminal antenna of the terminal
Between connection impedance adapter adjust characteristic impedance, be adapted to terminal antenna with the characteristic impedance of cable TV network.
3. wired TV network transmission wireless signal method as claimed in claim 2, which is characterized in that in step 2, institute
Wireless signal after stating frequency reducing accesses to after power amplification again at the cable TV network optical node of front end；In step 3
In, the wireless signal after raising frequency carries out power amplification processing.
4. wired TV network transmission wireless signal method as claimed in claim 3, which is characterized in that the cable television network
Network includes the transmission of uplink and downlink twocouese signal；At the cable TV network optical node of the front end, the wireless communication of uplink
It number is transported to wireless signal access device, and is emitted via the emitter of wireless signal access device；In the terminal
At cable TV network optical node, the wireless signal of downlink is wired electricity that the terminal is received and be input to via terminal antenna
View network optical node.
5. wired TV network transmission wireless signal method as claimed in claim 4, which is characterized in that the wireless signal is
WiFi signal and/or 5G signal.
6. a kind of wired TV network transmission wireless signal system, which is characterized in that including signal front end processing device, You Xian electricity
View network and Signal Terminal processing unit；The first signaling interface and wireless signal access device of the signal front end processing device
Connection, second signal interface are connected to the cable TV network at the optical node of the cable TV network；The letter
First signaling interface of number terminal processing device is connected to the cable television network at the optical node of the cable TV network
Network, second signal interface are connect with terminal antenna；In the signal front end processing device and the Signal Terminal processing unit
Equipped with frequency converter.
7. wired TV network transmission wireless signal system as claimed in claim 6, which is characterized in that in the signal front end
In processing unit, the first access port is connected with impedance adapter, and the impedance adapter connects the first front end inserter, described
First front end inserter connects front end low-converter, and the front end low-converter connects power amplifier, the power amplifier
It is connected to the second front end inserter, second front end inserter is connect with mixer, the mixer delivery outlet and the letter
The second signal interface connection of number front end processing device, forms front end receiver circuit；
In in the Signal Terminal processing unit, the second access port is connected with impedance adapter, the impedance adapter connection
Second terminal inserter, the second terminal inserter connect power amplifier, become in the power amplifier connection terminal
Frequency device, the terminal upconverter are connected with filter, and the filter is connected to first terminal inserter, the first terminal
Inserter is connect with distributor, and the distributor input port is connect with the first signaling interface of the Signal Terminal processing unit；
Form terminal output loop；Coaxial cable power module is connected on the distributor.
8. wired TV network transmission wireless signal system as claimed in claim 7, which is characterized in that at the signal front end
It manages and is connected with front end output loop between the first front end inserter and the second front end inserter of device, returned with the front end receiver
Road is in parallel；Terminal reception is connected between the first terminal inserter and second terminal inserter of the Signal Terminal processing unit
Circuit, it is in parallel with the terminal output loop.
9. wired TV network transmission wireless signal system as claimed in claim 8, which is characterized in that the power amplifier
For adjustable power amplifier, the front end low-converter is variable frequency convertor, and the impedance adapter is adjustable impedance adapter.
10. wired TV network transmission wireless signal system as claimed in claim 9, which is characterized in that described in one
Signal front end processing device, the mixer input terminal connect cable TV signal, and output end is connected to front end cable television
Network optical node, the cable TV network optical node of the terminal are connected at CATV terminal and multiple Signal Terminals
Manage device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415429.1A CN109246379A (en) | 2018-11-26 | 2018-11-26 | A kind of wired TV network transmission wireless signal method and system |
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| CN110401976A (en) * | 2019-08-27 | 2019-11-01 | 欧阳世杰 | Based on the base station distributed 5G gNB of Coaxial distribution network network and implementation method |
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