地上デジタル放送における固定・移動受信を両立させる階層伝送実験

概要

論文の詳細を見る
ISDB-T enables multiple programs to be broadcast according to the purpose at hand using hierarchical transmission. With the objective of using this capability in actual broadcast services, we have performed experiments that set up two layers within one 6-MHz channel, one for HDTV stationary reception and the other for mobile reception. This is possible because high compression efficiency 720p is used for HDTV broadcast. In the experiments, We first examined mobile reception in urban areas and determined the parameters that would make it workable, and then performed two-layers transmission consisting of "HDTV including data broadcasts" and "mobile-reception broadcasts, " confirming that actual services could be achieved in this manner.
2001-03-23