ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
Search
Advanced search
OR
Browse
Search
40.14 Broadcasting and Communication Technologies(BCT)
Displaying 1-16 of 16 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (10K)
  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (43K)
  • Development of 8K Waveform Monitor with U-SDI Signal Analyzer
    Takuji SOENO, Yoshitaka IKEDA, Takayuki YAMASHITA
    Article type: Article
    Session ID: BCT2016-34
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    NHK has been researching and developing an 8K Super Hi-Vision system toward test broadcasting in 2016 and starting service in 2018. We have confirmed the video level and the waveform of 8K video signal after down converting it to 4K resolution video signal, as there was no equipment that could input and view 8K video signal directly. Furthermore it was difficult to monitor 8K signal and to develop 8K equipment because there was no analyzer corresponding to U-SDI that is 8K interface defined in ARIB and SMPTE. In this report, we have developed an 8K waveform monitor with U-SDI signal analyzing function.
    View full abstract
    Download PDF (11653K)
  • Performance analysis of HEVC coding of HLG high dynamic range pictures
    Atsuro ICHIGAYA, Shunsuke IWAMURA, Yukihiro Nishida
    Article type: Article
    Session ID: BCT2016-35
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_5
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    Ultra High Definition Television (4K and 8K UHDTV) broadcasting is planned to start in 2016 in Japan. Owing to the features of higher resolution, wider color gamut and higher-frame rate than those of HDTV, UHDTV provide viewers with a stronger sense of "being there" and sense of realness. An additional feature called High Dynamic Range (HDR) has been studied for inclusion in the UHDTV broadcasting. One of the HDR-TV systems is the Hybrid Log-Gamma (HLG) specified in ARIB STD-B67. We conducted a coding experiment to derive required bitrates to achieve broadcast quality when using HLG and HEVC in UHDTV broadcasting. We confirmed that it would be possible to deliver high quality HDR pictures at a comparable bit rate with that required for standard dynamic range (SDR) pictures.
    View full abstract
    Download PDF (6827K)
  • Comparison of Coding Performance between Hybrid Log-Gamma system and Perceptual Quantization system : Objective quality evaluation between different HDR formats
    Shunsuke IWAMURA, Atsuro ICHIGAYA, Yukihiro NISHIDA
    Article type: Article
    Session ID: BCT2016-36
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_9
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    This paper addresses comparison of coding performance of Hybrid Log-Gamma (HLG) system and Perceptual Quantizer (PQ) system, which are both adopted for ultra-high definition television broadcasting services. For comparing coding performance between different HDR video formats, we conducted objective quality evaluation using delta-E measurement in CIE 1976 L*a*b* color space. The experimental results show that coding artifacts of HLG system in terms of delta E are less than those of PQ system for almost all the test sequences used. Additionally, color artifacts in PQ system were observed, which were caused by signal conversion and strong non-linearity of transfer characteristics.
    View full abstract
    Download PDF (3111K)
  • A Prototype of Synchronization Method between Broadcast and Broadband Using MPEG-DASH Player for Hybridcast
    Masayoshi ONISHI, Yuki HIRONAKA, Kinji MATSUMURA, Masaru TAKECHI
    Article type: Article
    Session ID: BCT2016-37
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    NHK has been studying synchronization between broadcast and broadband video for the purpose of multi-angle services to use broadband to advance the enhancement of Hybrdicast. This paper proposes a synchronization method that uses MPEG-DASH player for Hybridcast. We found two issues about the synchronization on a receiver. We report the design, prototype and verification about the synchronization system to solve the issues.
    View full abstract
    Download PDF (555K)
  • A Method for User-Selectable Viewing Experiences of HD Broadcast and UHD Broadband Videos using MPEG-DASH on Hybridcast
    Masashi ITO
    Article type: Article
    Session ID: BCT2016-38
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_17
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    In Dec 2014, IPTV Forum Japan published Hybridcast Operational Guidelines Version 2.0. This technical specification enables Hybridcast Systems to support MPEG-DASH, HTML5 MSE/EME extensions, and H.265/HEVC UHD streaming videos. In this paper, the author proposes a method for the user-selectable viewing experiences of HD Broadcast and UHD Broadband videos on the conventional broadcast TV system with above techniques. Moreover, we show the first implementation in the production environment.
    View full abstract
    Download PDF (10581K)
  • A Study on Service Availability for UHDTV Satellite Broadcasting
    Masafumi NAGASAKA, Susumu NAKAZAWA, Shoji TANAKA
    Article type: Article
    Session ID: BCT2016-39
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_21
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    Experimental UHDTV satellite broadcasting and full-scale UHDTV broadcasting will begin in 2016 and 2018, respectively. For the implementation of UHDTV broadcasting, the transmission system with a 12-GHz band broadcasting satellites was standardized. This system introduced a modulation scheme of 16APSK to increase the information bitrates to 100 Mbps per transponder. Since the 16APSK requires the higher C/N, service availability and a satellite link design have been studied. In this paper, we studied service availability and satellite link designs by using the latest experiment results, which were obtained with a broadcasting satellite. Finally, we confirmed that the annual service availability of 99.9 % and the worst-month service availability of 99.7 % can be obtained with a 45-cm diameter receiving antenna in Tokyo.
    View full abstract
    Download PDF (529K)
  • A study of precision analysis technology of propagation variations in the multi-point measurement using a DTTB signal
    Hiroki OHTA
    Article type: Article
    Session ID: BCT2016-40
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_25
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    Toward the realization of a remote multi-point synchronous measurement of meteorological observations, we examined the precise analysis technique using signals in the Digital Terrestrial TV Broadcasting (DTTB). We obtains a delay profile of the digital terrestrial television broadcasting by using the band division. Then, it was analyzed the precise propagation time and propagation distance fluctuation by applying the double phase difference method.
    View full abstract
    Download PDF (533K)
  • A Study on the precoded MIMO-OFDM transmission using phase hopping
    Hiroaki MIYASAKA, Yoshikazu NARIKIYO, Madoka NAKAMURA, Kenichi TSUCHID ...
    Article type: Article
    Session ID: BCT2016-41
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_29
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    NHK has been conducting research on the next generation of digital terrestrial broadcasting transmission system to enable large-volume content service such as Super Hi-Vision and studying on the large capacity transmission technologies using dual polarized MIMO. In this MIMO system, the deteriorations of reception performance was caused by the almost same reception levels between horizontal and vertical polarizations wave. To solve these problems, the precoded MIMO transmission system has been proposed. However, the reception characteristics are deteriorated under the specific phase difference even by the precoded MIMO. Therefore NHK proposed a new method as the precoded MIMO-OFDM transmission system using phase hopping This paper describes the computer simulation results of this new method for compensating the deterioration.
    View full abstract
    Download PDF (546K)
  • Comparison of Transmission Performance between MIMO Systems for SHV Wireless Cameras
    Fumito ITO, Takayuki NAKAGAWA, Hiroyuki HAMAZUMI
    Article type: Article
    Session ID: BCT2016-42
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_33
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    The authors have been researching large capacity transmission technology using millimeter waves to develop SHV (Super Hi-Vision) wireless cameras. Based on a conventional wireless camera using a 2×4 MIMO (Multiple-Input Multiple-Output)-QPSK (Quadrature Phase Shift Keying) system, we calculated the transmission rates by changing the modulation methods from QPSK to 16QAM (Quadrature Amplitude Modulation) or 256QAM, the MIMO structures from 2×4 to 4×4, and the transmission mode from conventional "half-mode" to "full-mode" which has a twice bandwidth. In this paper, the comparisons of required C/N and link margin between candidates which can achieve the transmission rate required for SHV wireless cameras are demonstrated by computer simulations. The result shows that a 4×4 MIMO-QPSK system using full-mode can perform the lowest required C/N and achieve 4 times larger transmission rate than that of the conventional system, suppressing the loss of the link margin by about 4.9 dB.
    View full abstract
    Download PDF (512K)
  • Study the encoding process by the video switching method : Mitigation measures of sharp change the video signal and improvement of the coding characteristic
    Yasuhiro Ishikawa, Hiroyuki Takesue, Atsushi Miyashita
    Article type: Article
    Session ID: BCT2016-43
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_37
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    In the video encoding process which is necessary for the transmission of video signal, it is common that the image deterioration is caused when the image switching. This is recognized that lowering of similarity to previous frame is primary factor. To improve that similarity, this paper describes the measures of sharp change detection of video signal.
    View full abstract
    Download PDF (3620K)
  • Improvement by PAPR Reduction Technique of OFDM signals for Performance Degradation due to Nonlinearity of 42-GHz band PA
    Jun TSUMOCHI, Takayuki NAKAGAWA, Hiroyuki HAMAZUMI
    Article type: Article
    Session ID: BCT2016-44
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_41
    CONFERENCE PROCEEDINGS FREE ACCESS
    Show abstractHide abstract
    The authors have been developing an 8K-FPU (Field Pick-up Unit) which is a 42-GHz band wireless transmission system for UHDTV (Ultra High-Definition Television) program contribution. High-capacity transmission required for 8K-FPUs is achieved by using dual polarized MIMO (Multiple-Input Multiple-Output)-OFDM (Orthogonal Frequency Division Multiplexing) system and wide bandwidth of 42-GHz band. With respect to OFDM systems, there is a problem of performance degradation due to PA (power amplifier) nonlinearity because OFDM signals composed of many subcarriers have a higher PAPR (Peak-to-Average Power Ratio). One of the methods to reduce the performance degradation due to the PA nonlinearity is to apply a PAPR reduction technique on the OFDM signals. This paper describes the relation between the quantity of PAPR reduction and performance degradation due to the PA nonlinearity through the computer simulation. As a result, the simulation shows that the BER (Bit Error Rate) degradation can be reduced by the PAPR reduction technique.
    View full abstract
    Download PDF (545K)
  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (78K)
  • [title in Japanese]
    Article type: Appendix
    Pages App2-
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_App2
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (78K)
  • [title in Japanese]
    Article type: Appendix
    Pages App3-
    Published: March 04, 2016
    Released on J-STAGE: September 22, 2017
    DOIhttps://doi.org/10.11485/itetr.40.14.0_App3
    CONFERENCE PROCEEDINGS FREE ACCESS
    Download PDF (78K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top