![]() ![]() As a consequence, channel sharing and frequency re-use are important factors to consider in spectrum planning. When spectrum bandwidth changes, the number of available channels will also change. However, the improvement of channel capacity alone isn’t enough for UHD. In a sense, it is a centrally managed spectrum shared by the three 6 MHz channel licensees. Three 6 MHz channel transmitter sites are also reduced to one 20 MHz transmitter site. This is because by merging three 6 MHz channels into one 20 MHz channel, two guard bands that separate the three 6 MHz channels are converted into a part of the 20 MHz bandwidth. In addition to enabling the new services, the 20 MHz channel bandwidth policy improves spectrum efficiency, simplifies management and saves on CAPEX and OPEX. This content diversity will increase viewer engagement, and potentially increase viewer loyalty. By 2024, the global market for 4K technologies could reach $144 billion, according to Market Research Engine.Īdvances in coding technology and high capacity broadcasting channels will enable a shift from traditional single view live broadcasting to multiple view live broadcasting. is more than 30%, and 48% of non-4K TV owners plan to get a new TV within the next year, according to Leichtman Research Group. ![]() Currently 4K TV household penetration in the U.S. If UHD 8K service is about the future, then multiple UHD 4K service is about the present. With future Versatile Video Coding (VVC), a UHD 8K program at 120 Hz frame rate can be compressed to a bit rate of 120 Mbps while a UHD 8K program at reduced 60 Hz frame rate could be broadcast without MIMO. With 2x2 MIMO, 64 QAM and 20 MHz channel bandwidth, estimated capacity is about 130 Mbps. Specifically, an additional 20 MHz channel bandwidth is proposed for ATSC 3.0 to support a variety of new services. In an operation change, ATSC 3.0 should include UHD 8K and multiple UHD 4K services. In a policy change, ATSC 3.0 should support 20 MHz bandwidth. Policy defines the relevant environment, and operation provides the requisite variety and in ATSC 3.0, both changes are needed. One is to change policy in management, another is to increase services in operation. There are two possible ways to achieve this. In the VSON approach, a technology standard doesn’t exist in a vacuum-it coexists with its environment-UHD 8K is a perfect example of that future environment.įor a technology standard to survive, it must adapt to a new environment and co-evolve with it. Assuming that the hardware infrastructure of digital terrestrial television broadcasting remains unchanged, one can focus on the policy/standard network and use viable system of networking (VSON) to manage its complexity. Policies/standards often connect to other policies/standards to form a “policy/standard network.” ATSC 3.0 is a part of such a policy/standard network. MIMO and Channel Bonding increase the complexity of a broadcast system and they cannot be combined in ATSC 3.0.ĭigital terrestrial television broadcasting is defined by hardware infrastructure and technical policies/standards. Possible Shannon Capacities by ATSC 3.0 standards, using 256 QAM to match ATSC 1.0 coverage, with similar transmission parameters. Clearly, the current ATSC 3.0 standards can’t provide the needed 200 Mbps capacity for UHD 8K (see Table 1). There are several ways to increase the channel capacity in ATSC 3.0: Quadrature Amplitude Modulation (QAM), Multiple Input, Multiple Output (MIMO, support for 2x2 using polarization) and Channel Bonding (supporting two RF channels). However, using current ATSC 1.0 transmission parameters and covering similar area, more realistic ATSC 3.0 capacity is estimated to be 26 Mbps, with 256 QAM, about 33% more than the 19.4 Mbps capacity of ATSC 1.0 standards. Using 16 APSK, the transmission rate is approximately 100 Mbps.)įor the 6 MHz channel, the maximum theoretical capacity of ATSC 3.0 is 57 Mbps. (The transponder bandwidth of NHK’s 8K satellite broadcast is 34.5 MHz. At 12 bit color and 120 Hz refresh rate, with HEVC encoding, the bit rate of UHD 8K is about 200 Mbps.Ĭurrently, there is no digital terrestrial broadcast method that can deliver the 200 Mbps content in a 6 MHz channel. With 33.18 million pixels and 68 billion colors, UHD 8K provides the best Quality of Experience (QoE), approaching human eyesight in pixel, density fields of view and color gamut (Ling Ling Sun, 5G And UHD 8K- A Developing Symbiosis). Currently the UHD 8K technology market is estimated at approximately $2.9 billion, but projected to reach $26.8 billion by 2024 according to research firm MarketWatch. ![]()
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