Adaptive RF front end for low power consumption digital terrestrial television broadcasting receiver
Soo-hwan, Kim (0451206)
Digital terrestrial television broadcasting (DTTB) service for mobile terminals has begun on, 2003 in three major cities in Japan. The Japanese mobile DTTB service employs ISDB-T (Integrated Services Digital Broadcasting for Terrestrial) standard, whose physical layer transmission scheme is on OFDM (Orthogonal Frequency Division Multiplex).
This thesis proposes an adaptive RF front-end for reducing power consumption of the digital terrestrial television broadcasting for mobile receiver. Reception of DTTB (digital terrestrial television broadcasting) based on OFDM requires high power consumption RF (radio frequency) front-end in order to satisfy low NF (noise figure) and wide dynamic range amplification. However, the power consumption is strictly limited in mobile reception of DTTB because of battery size limitation.
In order to solve this problem, this paper proposes an adaptive RF front-end for reducing power consumption of the mobile DTTB receiver by making efficient use of channel state information such as the average received power, error vector magnitude (EVM), multi-path delay spreading, and maximum Doppler shift as well as the transmission mode and modulation format. Computer simulation result shows that the proposed adaptive RF front-end is capable of reducing the power consumption in multi-path fading environment.