Performance of Diversity Reception for Digital Terrestrial Television Broadcasting
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This paper describes the performance of space diversity reception for the digital terrestrial television broadcasting system(ISDB-T). We developed 2-branch diversity OFDM receiver and measured mobile performances of various ISDB-T transmisson parameters. The results of laboratory experiment show that maximum ratio combining diversity is effective to improve 64QAM-OFDM mobile performance. When the ISDB-T parameter is mode2, 64QAM and r=3/4, the required C/N is 18dB in the CSM typical urban area fading channel with maximum Doppler frequency of 70Hz.
