Presentation on theme: "1 Soontai LTE Filter 2011.03.30 v1.0. 2 What is LTE ? What is LTE ? How does LTE interfere with DTT ? How does LTE interfere with DTT ? How to filter."— Presentation transcript:
1 Soontai LTE Filter v1.0
2 What is LTE ? What is LTE ? How does LTE interfere with DTT ? How does LTE interfere with DTT ? How to filter out LTE interference ? How to filter out LTE interference ? Soontai LTE filter Soontai LTE filter Contents
3 What is LTE ? LTE (Long Term Evolution) is a 4 th generation (4G) standard for mobile communication. Currently 17 communication companies worldwide have adopted LTE, more than 100 more are about to follow. LTE uses - FDD (Frequency Division Duplexing) and - TDD (Time Division Duplexing) protocols FDD : LTE base stations and handheld devices use different bands TDD : LTE base stations and handheld devices use the same bands
4 USA MetroPCS : FDD 1.4/1.7GHz Verizon : FDD 700MHz Germany Vodafone : FDD 800MHz Japan NTT DoCoMo : FDD 1.5GHz Uzbekistan MTS / UCell: TDD 2.6GHz Norway TeliaSonera: TDD 2.6GHz Finland TeliaSonera: TDD 2.6GHz Denmark TeliaSonera: TDD 2.6GHz Estonia EMT: TDD 2.6GHz Sweden TeliaSonera: TDD 2.6GHz Poland Mobyland, CenterNet TDD 2.6GHz Austria A1 Telekom TDD 2.6GHz Canada 700MHz/2.6GHz 2010 auction Brazil 2.6GHz 2013 auction
6 FDD LTE 800MHz Spectrum Digital TV FrequencyLTE Downlink BandLTE Uplink Band
7 LTE-800 Transmission Interferance into DTT LTE Base Station How does LTE interfere with DTT ?
8 LTE User Equipment
9 LTE Interference to DTT When LTE uses the 800 MHz digital dividend (Europe MHz) or the 700 MHz white space band (USA MHz) there will be interference with digital video broadcast signals (DVB-T/ATSC). DTV picture noise: How to solve this problem?
10 DVB-T signal LTE signal LTE Interferes with DTT DVB-T set-top box TV Antenna LTE signal LTE Base Station LTE User Equipememt DVB-T signal Soontai LTE Filter Soontai LTE Filter DVB-T signal LTE signal
11 Soontai LTE Filter LTE is the 4th generation mobile communication standard. This standard uses the frequency band next to the DVB-T band ( MHz in Europe, MHz in the Americas), which will lead to interferences with DVB TV or set-top-boxes. According to tests from Ofcom this interference can be eliminated with the help of a high rejection low pass filter. Our LTE Filters pass all requirements to eliminate interferences by LTE signals on digital broadcast reception. As a professional filter designer, Soontai can offer the LTE filter in a variety of packages and frequencies for various markets. Your inquiries are welcome. For more information please contact Mr. Kevin ChangKevin Chang