An indoor reception experiment and the mobile reception experiment in SFN

Abstract

In digital terrestrial television broadcast, the receiving form of indoor reception or mobile reception is expected. Here, in the realistic transmitting parameter (mode 3,16QAM/DQPSK), it experimented in indoor reception and mobile reception in the SFN (between Ikcoma and Hokudan Tarumi relay station) state, and the tolerance on electric wave propagation was evaluated. In the indoor reception experiment which used the commercial di-pole antenna, the tolerance of 16QAM 1/2 was stronger than the tolerance of DQPSK 3/4. The result differed from the difference of necessary C/N. In the mobile reception experiment in SFN, area unreceivable within and without a guard interval has been pinpointed.