Is it true that DVB-H receivers use more power than receivers used for the Korean T-DMB system?
No. At the outset, DVB recognised that power consumption in the receiver would be the most important factor in determining technical decisions concerning the DVB-H standard. It was this that gave rise to the time-slicing technique in DVB-H. There are no effective power saving techniques in T-DMB (other than “micro-time-slicing”, which is not an effective power-saving technique). Rather T-DMB relies on the fact that it operates in a 1.5MHz channel bandwidth, rather than the 5, 6, 7 or 8MHz channel bandwidths that DVB-H can operate in. The lower channel bandwidth for T-DMB means less data throughput, but also should mean less power. Thus, if you were to remove DVB-H time-slicing, T-DMB would have lower power consumption than DVB-H. It does not. The target power consumption for the DVB-H tuner and front end was less than 100mW, and the current state-of-the-art is less than 40mW. Our enquiries indicate that the power consumption of the T-DMB system is about 150mW – that’s four times higher
