handovers: dual-mode receivers may receive content on one or the other technique seamlessly. 4 Specific issues addressed by DVB-SH 4.1 Reception conditions and DVB-SH features 22 summarizes the reception conditions addressed by DVB-SH, across the different types of environment (rural, urban or suburban). For each case, the characteristics and typical parameters of the channels are given, with the relevant DVB-SH features. TABLE 22 Reception conditions addressed by DVB-SH Typical channel Reception Channel parameter and Situation Characteristics Environment Coverage condition characteristics relevant DVB-SH features Reception Outdoor Up to 3 km/h Rural Satellite Stationary: Low LOS:AWGN/Rice Condition A pedestrian delay/low spread. K > 10 dB: Additional margin to cope with fading. For shadowed, K < 7 dB: time interleaving to mitigate effects. Low speed: large LMS channel model signal variation. at low speed: Time interleaving. Urban Terrestrial Stationary: TU6 channel: low Rayleigh/very low code rate improves; Doppler. antenna diversity also improves. Low Higher margins to speed/Rayleigh/low cope with slow Doppler. fading effects. Suburban Terrestrial, For terrestrial same as For terrestrial same Combined above. as or No combined or No combined or integrated integrated channel integrated channel available. model available. Reception Up to 3 km/h, Rural (1) Condition B1 lightly shielded Terrestrial Channel is the same TU6 channel: low building as Reception A with code rate improves; high penetration antenna diversity margins. also greatly improves. Suburban Terrestrial, Same as above for Combined terrestrial. or No combined or integrated integrated channel model available. Reception Rural Up to (1) 3 km/h, Condition B2 highly shielded Urban Terrestrial Channel is the same TU6 channel/low building as Reception A with code rate improves; higher penetration antenna diversity margins as in B1.
handovers: dual-mode receivers may receive content on one or the other technique seamlessly. 4 Specific issues addressed by DVB-SH 4.1 Reception conditions and DVB-SH features 22 summarizes the reception conditions addressed by DVB-SH, across the different types of environment (rural, urban or suburban). For each case, the characteristics and typical parameters of the channels are given, with the relevant DVB-SH features. TABLE 22 Reception conditions addressed by DVB-SH Reception condition Situation Characteristics Environment Coverage Channel characteristics Typical channel parameter and relevant DVB-SH features Reception Condition A Outdoor pedestrian Up to 3 km/h Rural Satellite Stationary: Low delay/low spread. LOS:AWGN/Rice K > 10 dB: Additional margin to cope with fading. For shadowed, K < 7 dB: time interleaving to mitigate effects. Low speed: large signal variation. LMS channel model at low speed: Time interleaving. Urban Terrestrial Stationary: Rayleigh/very low Doppler. TU6 channel: low code rate improves; antenna diversity also improves. Low speed/Rayleigh/low Doppler. Higher margins to cope with slow fading effects. Suburban Terrestrial, Combined or integrated For terrestrial same as above. For terrestrial same as No combined or integrated channel available. No combined or integrated channel model available. Reception Condition B1 Up to 3 km/h, lightly shielded building Rural (1) Terrestrial Channel is the same as Reception A with high penetration margins. TU6 channel: low code rate improves; antenna diversity also greatly improves. Suburban Terrestrial, Combined or integrated Same as above for terrestrial. No combined or integrated channel model available. Reception Condition B2 Up to 3 km/h, highly shielded building Rural (1) Urban Terrestrial Channel is the same as Reception A with higher penetration margins as in B1. TU6 channel/low code rate improves; antenna diversity
R-REP-BT.2049-7-2016-MSW-E.docx