TABLE 5 Measured overload thresholds (dBm) for a DVB-T2 signal (defined in Table 1) interfered with by an LTE BS signal in adjacent channels for silicon tuners Channel offset N (8 MHz channels) Centre frequency offset (MHz) Number of receivers tested 0% BS traffic loading Oth (dBm) 50% BS traffic loading Oth (dBm) 100% BS traffic loading Oth (dBm) Percentile Percentile Percentile 10th 50th 10th 50th 10th 50th 1 10 11 –18 –6 –15 –6 –13 –8 2 18 11 –14 1 –12 –2 –13 –3 3 26 11 –12 3 –13 0 –12 –1 4 34 11 –11 5 –12 2 –12 0 5 42 11 –10 6 –12 3 –12 2 6 50 11 –10 4 –12 2 –12 2 7 58 11 –10 4 –11 2 –12 1 8 66 11 –10 4 –12 2 –12 1 9 74 11 –10 5 –12 3 –12 1 1.5.2 Protection of a DVB-T2 digital terrestrial television signal interfered with by a LTEUE signal The following tables show PR and Oth for three different UE traffic loadings: 6 – Uncorrected UE PR results Table 7 – Estimated UE ACLR based on 3GPP TS 36.101 and ETSI masks Table 8 – UE PR results corrected for UE out-of-band noise degradation Table 9 – UE overload threshold results. TABLE 6 Un-corrected protection ratios (dB) for a DVB-T2 signal (defined in Table 1) interfered with by an LTE UE signal in adjacent channels for silicon tuners Channel offset N 8 MHz channels/ (centre frequency offset) No. of Rx. tested 1 Mbit/s UE traffic loading Signal generator ACLR = 100 dB all offsets 10 Mbit/s UE traffic loading Signal generator ACLR = 100 dB all offsets 20 Mbit/s UE traffic loading Signal generator ACLR = 67.8 dB (N+1) 80.4 dB (N+2) 100 dB (N+3 to N+9) PR Percentile (dB) PR Percentile (dB) PR Percentile (dB) 50th 90th 50th 90th 50th 90th
Receiver noise figure F dB 6 6 6 Equivalent noise bandwidth B MHz 6.66 6.66 6.66 Receiver noise input power Pn dBW –128.6 –128.9 –128.5 Min. receiver signal input power Ps min dBW –109.7 –111.8 –111.4 Min. equivalent receiver input voltage, 75 Ω Umin dBµV 29.0 26.9 27.3 Feeder loss Lf dB 2 0 0 Antenna gain relative to half dipole Gd dB 7 –2.2 –2.2 Effective antenna aperture Aa dBm2 1.7 –7.5 –7.5 Min flux-density at receiving location min dB(W)/m2 –109.4 –104.3 –103.9 Min equivalent field strength at receiving location Emin dBµV/m 36.4 41.5 41.9 Allowance for man-made Pmmn dB 2 8 8 Penetration loss (building or vehicle) Lb, Lh dB 0 0 9 Standard deviation of the penetration loss dB 0 0 3 Diversity gain Div dB 0 0 0 TABLE 12 (end) DVBT2 in Band III Fixed Portable outdoor/urban Portable indoor/urban Location probability % 70 70 70 Distribution factor 0.5244 0.5244 0.5244 Standard deviation 5.5 5.5 6.3 Location correction factor Cl dB 2.8842 2.8842 Minimum median powerflux density at reception height(1); 50% time and 50% locations med dB(W)/m2 –104.5 –93.4 –83.6 Minimum median equivalent field strength at reception height(1); 50% time and 50% locations Emed dBµV/m 41.3 52.4 62.4 Location probability % 95 95 95 Distribution factor 1.6449 1.6449 1.6449 Standard deviation 5.5 5.5 6.3 Location correction factor Cl dB 9.04695 9.04695 10.36287
Minimum median power flux-density at reception height(1); 50% time and 50% locations med dB(W)/m2 –98.4 –87.3 –77.6 Minimum median equivalent strength at reception height(1); 50% time and 50% locations Emed dBµV/m 47.4 58.5 69.2 (1) 10 m for fixed reception and 1.5 m for the other reception modes. TABLE 13 Calculation of minimum field strength DVB-T2 8 MHz system at 650 MHz DVBT2 in Band IV/V Fixed Portable outdoor/urban Portable indoor/urban Frequency Freq MHz 650 650 650 Minimum C/N required by system C/N dB 20.0 17.9 18.3 System variant (example) 256QAM FEC 2/3, 32k, PP7 Extended 64QAM FEC 2/3, 32k, PP4 Extended 64QAM FEC 2/3, 16k, PP1 Extended Bit rate (indicative values) Mbit/s 35-40 26-29 23-28 Receiver noise figure F dB 6 6 6 Equivalent noise bandwidth B MHz 7.77 7.77 7.77 Receiver noise input power Pn dBW –128.0 –128.3 –127.9 TABLE 13 (end) DVBT2 in Band IV/V Fixed Portable outdoor/urban Portable Min. receiver signal input power Ps min dBW –109.1 –111.2 –110.8 Min. equivalent receiver input voltage, 75Ω Umin dBµV 29.7 27.6 28.0 Feeder loss Lf dB 4 0 0 Antenna gain relative to half dipole Gd dB 11 0 0 Effective antenna aperture Aa dBm2 –4.6 –15.6 –15.6 Min power flux-density at receiving location min dB(W)/m2 –100.5 –95.6 –94.2 Min equivalent field strength at receiving location Emin dBµV/m 45.3 50.2 50.6 Allowance for man-made noise Pmmn dB 0 1 1
E(50, t) : field strength (dB(V/m)) of the interfering transmitter, normalized to 1 kW, and exceeded during t % of the time P : e.r.p. (dB(1 kW)) of the interfering transmitter A : protection (dB) C and T : continuous and tropospheric interference, respectively. The protection ratio for continuous interference is applicable when the resulting nuisance field is stronger than that resulting from tropospheric interference, that is, when EC > ET. This that AC should be used in all cases when: E(50, 50) + AC > E(50, t) + AT ______________