Coexistence Digital TV and LTE Application Note Products: | R&SSMU200A | R&SSFU | R&SSMJ100A | R&SSFE | R&SSMBV100A | R&SSFE100 | R&SWinIQSIM2™ | R&SETL | R&STS8980 Spectrum that was previously reserved for TV broadcasting is being freed up in many countries for use under the new Long Term Evolution (LTE) mobile radio standard (keyword: "digital dividend"). As a result, numerous coexistence scenarios are possible. So network operators and manufacturers from both the mobile radio and the broadcast sector have a vital interest in avoiding any interference and performing in-depth testing of their products. Rohde & Schwarz offers a wide- ranging product portfolio for such applications. This Application Note presents Test & Measurement equipment for the broadcast and mobile radio sector and discusses some possible test setups. z e e l t 3 u _ o h 6 c N 7 S 1 n d A r o i a M t h 1 a - n r c 0 i l e 1 B p 0 2 p . 8 A 0 Table of Contents Table of Contents 1 Introduction......................................................................................... 4 2 Technological Overview ..................................................................... 4 2.1 TV Standards................................................................................................................4 2.2 3GPP LTE......................................................................................................................5 2.3 Additional Aspects.......................................................................................................6 3 Coexistence Measurements............................................................... 7 3.1 Spectrum ......................................................................................................................7 3.2 Overview coexistence scenarios Digital-TV / LTE....................................................7 3.3 Overview of the Rohde & Schwarz Product Portfolio ............................................10 3.3.1 SFU Broadcast Test System .....................................................................................11 3.3.2 Vector Signal Generator............................................................................................12 3.3.3 ETL TV Analyzer.........................................................................................................13 3.3.4 TS8980 Test System ..................................................................................................14 3.4 Test Setup...................................................................................................................15 3.4.1 Influence of Digital TV on Mobile Radio (LTE and WCDMA) .................................15 3.4.2 Influence of LTE on Digital TV ..................................................................................16 3.4.2.1 Test Setup: RF Interferer (Terrestrial TV) ................................................................21 3.4.2.2 Test Setup: RF Interferer (Cable TV) ........................................................................22 3.4.2.3 Test Setup: Baseband Interferer (WinIQSIM2) ........................................................23 3.5 Basic parameters .......................................................................................................24 3.5.1 TV Broadcast Signal (settings with SFx).................................................................24 3.5.2 LTE Signal (settings with SMx).................................................................................27 4 Appendix ........................................................................................... 31 4.1 Downloads..................................................................................................................31 4.2 References..................................................................................................................31 4.3 Additional Information ..............................................................................................31 5 Ordering Information........................................................................ 32 1MA176_3e Rohde & Schwarz Coexistence Digital TV and LTE 2 Table of Contents The following abbreviations are used in this Application Note for Rohde & Schwarz test equipment: • The R&S®SMJ100A vector signal generator is referred to as the SMJ. • The R&S®SMATE200A vector signal generator is referred to as the SMATE. • The R&S®SMU200A vector signal generator is referred to as the SMU. • The R&S®AMU200A baseband signal generator and fading simulator is referred to as the AMU. • The R&S®SMBV100A vector signal generator is referred to as the SMBV. • The SMJ, SMATE, SMBV and SMU are referred to as the SMx. • The R&S®SFU broadcast test system is referred to as the SFU. • The R&S®SFE broadcast tester is referred to as the SFE. • The SFU and the SFE are referred to as the SFx. • The WinIQSIM2™ software is referred to as WinIQSIM2. 1MA176_3e Rohde & Schwarz Coexistence Digital TV and LTE 3 Introduction 1 Introduction In many countries around the globe, spectrum that was previously reserved for TV broadcasting is being freed up for use under the new Long Term Evolution (LTE) mobile radio standard (keyword: "digital dividend"). Moreover, LTE will operate alongside broadcast applications in the future in this frequency range. As a result, numerous coexistence scenarios are possible. So network operators and manufacturers from both the mobile radio and the broadcast sector have a vital interest in avoiding any interference and performing in-depth testing of their products. Rohde & Schwarz offers a wide-ranging product portfolio for use in performing the applicable measurements on devices (e.g. interference immunity of user equipment, set-top boxes, etc.) and networks. This Application Note provides an overview of the coexistence topic, presents Test & Measurement equipment for the broadcast and mobile radio sectors and describes some possible test setups. 2 Technological Overview 2.1 TV Standards Digital broadcast TV standards typically occupy the frequency ranges from 174 MHz to 230 MHz (VHF) and 470 MHz to 862 MHz (UHF). They can be roughly classified in three different areas: C Mobile broadcast C Terrestrial broadcast C Cable broadcast Table 1 shows the current status of the digital TV frequency bands. 1MA176_3e Rohde & Schwarz Coexistence Digital TV and LTE 4 Technological Overview Overview of digital TV standards Frequency range Technology 174 MHz to 470 MHz to 1452 MHz to Region 230 MHz 862 MHz 1492 MHz S-Band VHF UHF L-Band DVB-H, DVB-SH X X 2170 MHz to 2220 MHz Europe Japan ISDB-T1 Seg X X South America MediaFLOTM X USA Mobile T-DMB X X Korea ATSC-M/H X USA CMMB X X 2635 MHz to 2660 MHz China ATSC X USA, Korea DVB-T/T2 X X Europe Terrest rial DTMB X X China Japan ISDB-T X South America DVB-C/C2 X X Europe Cable J.83/B X X USA ISDB-C X X Japan Table 1: Overview of digital TV standards In order to achieve the data rates needed, e.g., for high definition (HD) television, today's standards use orthogonal frequency division multiplexing (OFDM), higher-order modulation from 16QAM up to 256QAM (with even higher orders planned), channel bandwidths of up to 8 MHz and encoding techniques such as MPEG-4 and H.264. 2.2 3GPP LTE Long Term Evolution (LTE) or Evolved Universal Terrestrial Radio Access (E-UTRA) as described by the Third Generation Partnership Project (3GPP) is the next step in the evolution of third-generation (3G) cellular systems after HSPA (high speed packet access) and HSPA+. LTE can be operated in the frequency bands that are already available for existing 3G networks. Moreover, additional ranges such as the 2.5 GHz to 2.7 GHz band (Europe/Asia) and the 700 MHz band (USA) are allocated for usage. Table 2 shows the bands that are currently defined for LTE. 1MA176_3e Rohde & Schwarz Coexistence Digital TV and LTE 5 Technological Overview LTE operating bands E-UTRA Uplink (UL) operating band Downlink (DL) operating band Duplex operating BS receive BS transmit mode band UE transmit UE receive FUL_low to FUL_high FDL_low to FDL_high 1 1920 MHz to 1980 MHz 2110 MHz to 2170 MHz FDD 2 1850 MHz to 1910 MHz 1930 MHz to 1990 MHz FDD 3 1710 MHz to 1785 MHz 1805 MHz to 1880 MHz FDD 4 1710 MHz to 1755 MHz 2110 MHz to 2155 MHz FDD 5 824 MHz to 849 MHz 869 MHz to 894 MHz FDD 61 830 MHz to 840 MHz 875 MHz to 885 MHz FDD 7 2500 MHz to 2570 MHz 2620 MHz to 2690 MHz FDD 8 880 MHz to 915 MHz 925 MHz to 960 MHz FDD 9 1749.9 MHz to 1784.9 MHz 1844.9 MHz to 1879.9 MHz FDD 10 1710 MHz to 1770 MHz 2110 MHz to 2170 MHz FDD 11 1427.9 MHz to 1447.9 MHz 1475.9 MHz to 1495.9 MHz FDD 12 698 MHz to 716 MHz 728 MHz to 746 MHz FDD 13 777 MHz to 787 MHz 746 MHz to 756 MHz FDD 14 788 MHz to 798 MHz 758 MHz to 768 MHz FDD 15 Reserved Reserved FDD 16 Reserved Reserved FDD 17 704 MHz to 716 MHz 734 MHz to 746 MHz FDD 18 815 MHz to 830 MHz 860 MHz to 875 MHz FDD 19 830 MHz to 845 MHz 875 MHz to 890 MHz FDD 20 832 MHz to 862 MHz 791 MHz to 821 MHz FDD 21 1447.9 MHz to 1462.9 MHz 1495.9 MHz to 1510.9 MHz FDD ... 33 1900 MHz to 1920 MHz 1900 MHz to 1920 MHz TDD 34 2010 MHz to 2025 MHz 2010 MHz to 2025 MHz TDD 35 1850 MHz to 1910 MHz 1850 MHz to 1910 MHz TDD 36 1930 MHz to 1990 MHz 1930 MHz to 1990 MHz TDD 37 1910 MHz to 1930 MHz 1910 MHz to 1930 MHz TDD 38 2570 MHz to 2620 MHz 2570 MHz to 2620 MHz TDD 39 1880 MHz to 1920 MHz 1880 MHz to 1920 MHz TDD 40 2300 MHz to 2400 MHz 2300 MHz to 2400 MHz TDD Note 1: Band 6 is not applicable Table 2: LTE operating bands (TS36.101 rel. 9 [3], color highlighting: bands in