• Title/Summary/Keyword: time varying fading

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A study of Development of Transmission Systems for Terrestrial Single Channel Fixed 4K UHD & Mobile HD Convergence Broadcasting by Employing FEF (Future Extension Frame) Multiplexing Technique (FEF (Future Extension Frame) 다중화 기법을 이용한 지상파 단일 채널 고정 4K UHD & 이동 HD 융합방송 전송시스템 개발에 관한 연구)

  • Oh, JongGyu;Won, YongJu;Lee, JinSeop;Kim, JoonTae
    • Journal of Broadcast Engineering
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    • v.20 no.2
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    • pp.310-339
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    • 2015
  • In this paper, the possibility of a terrestrial fixed 4K UHD (Ultra High Definition) and mobile HD (High Definition) convergence broadcasting service through a single channel employing the FEF (Future Extension Frame) multiplexing technique in DVB (Digital Video Broadcasting)-T2 (Second Generation Terrestrial) systems is examined. The performance of such a service is also investigated. FEF multiplexing technology can be used to adjust the FFT (fast Fourier transform) and CP (cyclic prefix) size for each layer, whereas M-PLP (Multiple-Physical Layer Pipe) multiplexing technology in DVB-T2 systems cannot. The convergence broadcasting service scenario, which can provide fixed 4K UHD and mobile HD broadcasting through a single terrestrial channel, is described, and transmission requirements of the SHVC (Scalable High Efficiency Video Coding) technique are predicted. A convergence broadcasting transmission system structure is described by employing FEF and transmission technologies in DVB-T2 systems. Optimized transmission parameters are drawn to transmit 4K UHD and HD convergence broadcasting by employing a convergence broadcasting transmission structure, and the reception performance of the optimized transmission parameters under AWGN (additive white Gaussian noise), static Brazil-D, and time-varying TU (Typical Urban)-6 channels is examined using computer simulations to find the TOV (threshold of visibility). From the results, for the 6 and 8 MHz bandwidths, reliable reception of both fixed 4K UHD and mobile HD layer data can be achieved under a static fixed and very fast fading multipath channel.