CN102883119A - Wireless transmission device used for enlarging coverage area of digital TV transmitter - Google Patents
Wireless transmission device used for enlarging coverage area of digital TV transmitter Download PDFInfo
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- CN102883119A CN102883119A CN2011101957825A CN201110195782A CN102883119A CN 102883119 A CN102883119 A CN 102883119A CN 2011101957825 A CN2011101957825 A CN 2011101957825A CN 201110195782 A CN201110195782 A CN 201110195782A CN 102883119 A CN102883119 A CN 102883119A
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Abstract
The invention provides a wireless transmission device used for enlarging the coverage area of a digital TV transmitter, which relates to the technical field of the signal transmission and the signal coverage of a digital ground TV transmitter. A main station of the wireless transmission device comprises a digital TV transmitter of the main station, a power coupler, a wireless transmission system and a transmitting antenna which are sequentially connected. The wireless transmission device is structurally characterized further comprising a plurality of auxiliary stations which are arranged at the signal coverage edge of the main station, and each auxiliary station comprises a receiving antenna, a code flow regeneration system, a digital TV transmitter of the auxiliary station and a transmitting antenna which are sequentially connected. An adapter is connected between the power coupler of the main station and the wireless transmission system. Compared with the prior art, the wireless transmission device can effectively enlarge the coverage area of the digital TV transmitter, and has the characteristics of low investment, low construction labor, stable coverage area and good signal performance.
Description
Technical field
The present invention relates to signal transmission and the signal soverlay technique field of digital terrestrial television transmitter, especially for the radio transmitting device that enlarges digital television transmitter coverage area.
Background technology
Along with Digital Television replaces simulated television gradually, the signal covering problem of digital TV transmitter and the transmission problem of digital television signal code stream have become to affect the factor that digital terrestrial television develops.The popularization of Digital Television will inevitably occupy a large amount of frequency resources, and frequency resource is limited.
In the existing technology, in order to enlarge digital television transmitter coverage area, a kind of mode is that the method by single frequency network realizes large-area covering in a frequency range, and the mode that generally adopts is that the small-power multiple spot covers.This mode can be described as a kind of reliable and stable coverage mode, also is a kind of mode of comparative maturity, but this mode can be subject to building a station and the expensive restriction of a whole set of transmission equipment.Another kind of mode is to mend some device or the method for repeater by doing, and this kind method is fairly simple, and the expense of engineering will be lacked much relatively, but its effect differs greatly with respect to single frequency network.Because not only amplify useful signal simple benefit point device or repeater, also noise is amplified simultaneously, that is to say the deterioration that can cause the signal of main website to a certain degree, the phenomenon that occurs only having field intensity and do not have signal quality, make the receiving equipment can't normal decoder, and adopt this kind mode to make signal very unstable.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this invention is to provide a kind of radio transmitting device for enlarging digital television transmitter coverage area.It can effectively enlarge the area coverage of digital TV transmitter, has the advantages that investment is little, construction volume is little, covering is stable, signal is good.
In order to reach the foregoing invention purpose, technical scheme of the present invention realizes as follows:
A kind of radio transmitting device for enlarging digital television transmitter coverage area, its main website comprises main website digital TV transmitter, power coupler, wireless transmitting system and the transmitting antenna that links to each other successively.Its design feature is, it also comprises a plurality of pair stations that described main website signal covers the edge that are arranged on, and described secondary station comprises the reception antenna, the code stream that connect successively live again system, secondary digital TV transmitter and the transmitting antenna of standing.Payload attach fitting between the power coupler of main website and the wireless transmitting system.
In above-mentioned radio transmitting device, the described code stream system of living again adopts active and standby two covers.
The present invention is owing to having adopted above-mentioned structure, and area coverage is further stablized, improved reliably in the covering edge in main website by the mode of building secondary station.The present invention adopts the code stream technology of living again, can fundamentally solve the noise that the RF signal brings cumulative in transmission course, avoided the next stage amplifying circuit to noise further worsen may, the purpose that has also realized making the signal quality at place, increase coverage territory at utmost to optimize simultaneously.The present invention utilizes the theory of radio-frequency protection ratio; can make signal coherence district large tracts of land dwindle or will be concerned with and move on to the mode of useless region; so that area coverage obtains maximum extension and expansion, for saving frequency resource, the stable covering of low-cost, high-quality provides may.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Accompanying drawing is structural representation of the present invention; Upper figure is main website of the present invention structural representation in the accompanying drawing, and figure below is the secondary station structure schematic diagram of the present invention.
Embodiment
Referring to accompanying drawing, main website of the present invention comprises main website digital TV transmitter, power coupler, adapter, wireless transmitting system and the transmitting antenna that links to each other successively.The present invention also comprises a plurality of pair stations that the main website signal covers the edge that are arranged on, and described secondary station comprises the reception antenna that connects successively, active and standby two cover code streams live again system, secondary digital TV transmitter and the transmitting antenna of standing.
The main website digital TV transmitter of main website of the present invention is responsible for signal program is sent on the set-top box that can receive this signal user.Power coupler is responsible for finishing the output signal coupling, then the signal that is coupled to is outputed to adapter; Adapter is transformed into signal on the needed interface of wireless transmitting system according to the requirement of wireless transmitting system, and charge completion signal stable, optimize and corresponding the processing.Wireless transmitting system is responsible for the signal after the optimization process is gone out by transmission antennas transmit.The code stream system of living again at the secondary station of the present invention is responsible for the signal that the main website wireless transmitting system emits is processed, and be reduced into the original signal of main website digital TV transmitter, the entrained information of the information that this signal is entrained and primary signal is identical, and the signal to noise ratio of this signal and the signal to noise ratio of primary signal are substantially suitable, namely the signal quality of the quality of the signal that obtains of secondary station digital TV transmitter and main website digital TV transmitter is basic identical, thereby the margin signal quality of overlay area is greatly improved.
Claims (2)
1. radio transmitting device that be used for to enlarge digital television transmitter coverage area, its main website comprises main website digital TV transmitter, power coupler, wireless transmitting system and the transmitting antenna that links to each other successively, it is characterized in that, it also comprises a plurality of pair stations that described main website signal covers the edge that are arranged on, described secondary station comprises the reception antenna, the code stream that connect successively live again system, secondary digital TV transmitter and the transmitting antenna of standing, Payload attach fitting between the power coupler of main website and the wireless transmitting system.
2. radio transmitting device according to claim 1 is characterized in that, the described code stream system of living again adopts active and standby two covers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101957825A CN102883119A (en) | 2011-07-13 | 2011-07-13 | Wireless transmission device used for enlarging coverage area of digital TV transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101957825A CN102883119A (en) | 2011-07-13 | 2011-07-13 | Wireless transmission device used for enlarging coverage area of digital TV transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102883119A true CN102883119A (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101957825A Pending CN102883119A (en) | 2011-07-13 | 2011-07-13 | Wireless transmission device used for enlarging coverage area of digital TV transmitter |
Country Status (1)
| Country | Link |
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| CN (1) | CN102883119A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007080592A1 (en) * | 2006-01-11 | 2007-07-19 | Serconet Ltd. | Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting |
| CN101278525A (en) * | 2005-11-04 | 2008-10-01 | 英特尔公司 | Improved uplink throughput for wireless network interfaces |
| CN101421959A (en) * | 2006-02-21 | 2009-04-29 | Adc长途电讯有限公司 | Forward error correction in wideband digital RF transport systems |
| CN201563184U (en) * | 2009-06-30 | 2010-08-25 | 西北工业大学 | Wireless mobile receiving system for cable TV signal |
| CN101969420A (en) * | 2003-02-18 | 2011-02-09 | 高通股份有限公司 | Communication receiver with an adaptive equalizer |
-
2011
- 2011-07-13 CN CN2011101957825A patent/CN102883119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969420A (en) * | 2003-02-18 | 2011-02-09 | 高通股份有限公司 | Communication receiver with an adaptive equalizer |
| CN101278525A (en) * | 2005-11-04 | 2008-10-01 | 英特尔公司 | Improved uplink throughput for wireless network interfaces |
| WO2007080592A1 (en) * | 2006-01-11 | 2007-07-19 | Serconet Ltd. | Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting |
| CN101421959A (en) * | 2006-02-21 | 2009-04-29 | Adc长途电讯有限公司 | Forward error correction in wideband digital RF transport systems |
| CN201563184U (en) * | 2009-06-30 | 2010-08-25 | 西北工业大学 | Wireless mobile receiving system for cable TV signal |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130116 |