The Program Index is metadata of TV program for new digital broadcasting services such as non-linear watching, program group guide, and so on. In this paper, we propose new air-format for specifying thumbnail-image based on the program Index. We also describe newly developed prototype user interface system of the Program Index application using thumbnail image. Finally, we describe experimental end-to-end system on which the prototype user interface system is developed.
We develop SHF band OFDM modulation digital FPU and experiment it. This FPU's maximum transmission rate is 44.736Mbps because of restrictions of hardware system(ARIB recommended over 60Mbps transmission rate for HDTV). In this paper we show the results of experiment, (1)Long Distance Transmission, (2)Mobile Transmission by Helicopter, (3)Multi-pathTransmission.
We have developed OFDM receiver for Digital Terrestrial Television Broadcasting. In this paper, we show the IF and RF receiving performance of the receiver. The required D/U under the co-channel interference of NTSC TV signals is 13.4dB with 64QAM, convolutional code rate r=7/8. The required C/N under multipath condition of D/U=O dB is 8dB with DQPSK r=1/2. The receiver can incorporate the additional analysis function of OFDM signals.
This paper will summarize some of the analog/digital channel combiner in Europe. A key design requirement for the adjacent channel combiner was high power and good stability during ambient temperature.