Abstract
Abstract The worldwide transition from analog to digital broadcasting has now been completed, and the need to study next-generation standards for ultra-high-definition TV (UHDTV) broadcasting, as well as broadcasting and communication convergence systems is rapidly growing. In particular, high-resolution mobile broadcasting services are needed to satisfy recent consumer demands. Therefore, the development of highly efficient convergence broadcasting systems that provide fixed/mobile broadcasting through a single channel is needed. In this paper, a service scenario and the requirements for providing 4 K UHD and high-definition (HD) convergence broadcasting services through a terrestrial single channel are analyzed by employing the latest transmission and video codec technologies. Optimized transmission parameters for 6- and 8-MHz terrestrial bandwidths are drawn, and receiving performances are measured under additive white Gaussian noise (AWGN) and time-varying typical urban (TU)-6 channel to find the threshold of visibility (TOV). From the results, reliable receiving of HD layer data can be achieved at a 6-MHz bandwidth when the maximum receiver velocity is 140 km/h and no higher due to the limit of bandwidth. When the bandwidth is extended to 8 MHz, reliable receiving of both 4 K UHD and HD layer data can be achieved under a very fast fading multipath channel.
Highlights
Worldwide transition from analog to digital broadcasting has been completed, and the need to develop new standards for next-generation ultra-high-definition TV (UHDTV) broadcasting, as well as broadcasting and communication convergence systems in preparation for the post high-definition (HD) period is rapidly growing
The required data rate when employing the latest scalable high-efficiency video coding (SHVC) video codec technology was forecasted, and the optimized transmission parameters for 4 K UHD and HD convergence broadcasting were drawn by employing the latest transmission technologies as in Digital Video Broadcasting (DVB)-T2 systems
For the 6-MHz bandwidth, reliable receiving of the HD layer data could be achieved when the receiver velocity was a maximum of 140 km/h and no higher due to the limit of bandwidth
Summary
Worldwide transition from analog to digital broadcasting has been completed, and the need to develop new standards for next-generation ultra-high-definition TV (UHDTV) broadcasting, as well as broadcasting and communication convergence systems in preparation for the post high-definition (HD) period is rapidly growing. The development of convergence broadcasting systems that can provide both terrestrial fixed UHD and high-resolution mobile broadcasting services through a single channel is needed. The 4 K UHD-enhanced and HD base video data are transmitted through a single channel using convergence broadcasting systems. We focused on 4 K and UHD convergence broadcasting systems for the transmission of 4 K UHD-enhanced and HD base video data through a terrestrial broadcasting channel. To examine the possibility of using a terrestrial 4 K UHD and HD convergence broadcasting service, the transmission availability of the compressed 4 K UHDenhanced and HD base data rate through a single terrestrial channel, which was analyzed, needs to be examined. After the two PLP layers are multiplexed into a single transmission frame, frequency interleaving and OFDM symbol modulation are applied and the signals are transmitted after OFDM modulation is transmitted
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