CONTENTS

 

RECOMMENDATION  ITU-R  BT.1368-7     5
Planning criteria for digital terrestrial television services in the VHF/UHF bands     5
Scope     5
 1     Wanted digital terrestrial television systems  6
 2     Wanted analogue terrestrial television systems  7
List of Tables     11
List of Figures     15
Annex 1  Planning criteria for ATSC digital television systems in the VHF/UHF bands     16
 1     Protection ratios for ATSC wanted digital terrestrial television signals  16
        1.1     Protection of an ATSC digital terrestrial television signal interfered with by an ATSC digital terrestrial television signal     16
        1.2     Protection of ATSC digital terrestrial television interfered with by analogue terrestrial television     17
                  1.2.1     Protection from co-channel interference  17
                  1.2.2     Protection from lower adjacent channel (N � 1) interference  17
                  1.2.3     Protection from upper adjacent channel (N + 1) interference  17
                  1.2.4     Protection from other channel interference  18
 2     Protection ratios for wanted analogue terrestrial television signals interfered with by unwanted ATSC digital terrestrial television signals     18
        2.1     Protection ratios for 525-line television systems  18
                  2.1.1     Protection for vision signals interfered with by ATSC digital television  18
        2.2     Protection ratios for 625-line television systems  19
                  2.2.1     Protection of wanted vision signals interfered with by ATSC digital terrestrial television     19
 3     Protection ratios for sound signals of wanted analogue terrestrial television signals interfered with by unwanted ATSC digital terrestrial television signals     20
        3.1     Protection for NTSC sound signals (BTSC MTS system and SAP) interfered with by an ATSC digital television signal (see Note 1)     20
 4     Minimum field strengths for ATSC terrestrial digital television  20
Appendix 1  to Annex 1  Derivation by the figure of merit method     21
Required field strength     21
Receive system figure of merit     21
Receiver noise temperature     21
LNA noise temperature     21
Transmission line noise temperature     22
Balun noise temperature     22
Antenna noise temperature     22
Antenna noise temperature (referred to LNA input)     22
System noise temperature     22
Gain of 1 m2     22
Data     22
Annex 2  Planning criteria for DVB-T digital television systems  in the VHF/UHF bands     23
 1     Protection ratios for DVB-T wanted digital terrestrial television signals  23
        1.1     Protection of a DVB-T digital terrestrial television signal interfered with by a DVB-T digital terrestrial television signal     23
        1.2     Protection of DVB-T digital terrestrial television interfered with by analogue terrestrial television     24
                  1.2.1     Protection from co-channel interference  24
                  1.2.2     Protection from lower adjacent channel (N � 1) interference  25
                  1.2.3     Protection from upper adjacent channel (N + 1) interference  26
                  1.2.4     Protection from overlapping channel interference  26
        1.3     Protection of DVB-T digital terrestrial television signal from CW or FM signals  27
        1.4     Protection of DVB-T digital terrestrial television signals from T-DAB signals  28
        1.5     Protection of DVB-T from wideband signals other than terrestrial broadcasting  29
                  1.5.1      Protection ratios for DVB-T interfered with by the fixed service (relocatable system)     29
                  1.5.2     Protection ratios for DVB-T interfered with by code-division multiple access (CDMA)     29
 2     Protection ratios for wanted analogue terrestrial television signals interfered with by unwanted DVB-T digital terrestrial television signals     30
        2.1     Protection ratios for 625-line television systems  30
                  2.1.1     Protection of wanted vision signals interfered with by DVB-T digital terrestrial television signal     30
 3     Protection ratios for sound signals of wanted analogue terrestrial television signals interfered with by unwanted DVB-T digital terrestrial television signals     34
        3.1     Protection for FM, AM and NICAM sound signals of analogue television systems interfered with by DVB-T digital terrestrial television signals     35
 4     Protection ratios for a T-DAB signal interfered with by an unwanted digital terrestrial television signal     36
 5     Minimum field strengths for DVB-T terrestrial digital television, fixed reception  37
 6     Minimum median field strength for mobile DVB-T reception  37
        6.1     Required average C/N for mobile reception  37
        6.2     Receiver noise figure  40
 7     Minimum median field strength for hand held pedestrian indoor, pedestrian outdoor and mobile DVB-H reception     40
        7.1     Channel models for hand held pedestrian indoor and outdoor reception  40
       7.2      Channel model for mobile reception  42
        7.3     Required average C/N for hand held indoor and outdoor reception  42
        7.4     Required average C/N for hand held indoor and outdoor reception  43
        7.5     Receiver noise figure  44
Appendix 1 to Annex 2  Calculation of minimum field strength and minimum  median equivalent field strength     44
Annex 3  Planning criteria for ISDB-T digital television system in the VHF/UHF bands     45
 1     Protection ratios for ISDB-T wanted digital terrestrial television signals  45
        1.1     Protection of an ISDB-T digital terrestrial television signal interfered with by an ISDB-T digital television signal     46
        1.2     Protection of ISDB-T digital terrestrial television interfered with by analogue terrestrial television     47
                  1.2.1     Protection from co-channel interference  47
                  1.2.2     Protection from lower adjacent channel (N � 1) interference  47
                  1.2.3     Protection from upper adjacent channel (N + 1) interference  48
 2     Protection ratios for wanted analogue terrestrial television signals interfered with by unwanted ISDB-T digital terrestrial television signals     48
        2.1     Protection ratios for 525-line television systems  48
                  2.1.1     Protection for NTSC vision signals interfered with by ISDB-T digital television signals     48
 3     Protection ratios for sound signals of wanted analogue terrestrial television systems interfered with by ISDB-T unwanted digital terrestrial television system     49
        3.1     Protection for NTSC sound signals interfered with by an ISDB-T digital television signal     49
 4     Minimum field strengths for ISDB-T terrestrial digital television  49
Appendix 1 to Annex 3  Derivation by the figure of merit method     51
Required field strength     51
Receive system figure of merit     51
Receiver noise temperature     51
LNA noise temperature     51
Transmission line noise temperature     51
Balun noise temperature     51
Antenna noise temperature     51
Antenna noise temperature (referred to LNA input)     52
System noise temperature     52
Gain of 1 m2     52
Data     52
Annex 4  Other planning factors     53
 1     Field strength distribution with location  53
 2     Reception using portable equipment inside buildings and vehicles  54
        2.1     Height loss: Lh  54
        2.2     Building entry loss: Lb 54
High:     54
Medium:     54
Low:     55
        2.3     Vehicle entry loss: Lv 55
 3     Receiving antenna discrimination  55
 4     Antennas for portable and mobile receivers  55
        4.1     Antennas for portable reception  55
        4.2     Antennas for hand-held reception  55
        4.3     Antennas for mobile reception  56
Annex 5  Subjective comparison method (SCM) with a reference interferer for assessment of protection ratios for analogue television systems     56
 1     Introduction  56
 2     SCM for assessment of protection ratios using a sine-wave reference  57
        2.1     General description  57
        2.2     Realization of the reference interferer 58
        2.3     Test conditions  58
        2.4     Presentation of the results  59
 3     Table of important parameters  59
Annex 6  Test methods for protection ratio measurements for  wanted digital terrestrial signals     60
 1     Background  60
 2     Subjective failure point (SFP) method for protection ratio measurements  60
Annex 7  Tropospheric and continuous interference     60