文章基本信息

标题：地上波デジタル放送の遅延プロファイル測定における時間分解能向上のための複数チャネル連結方式に関する検討
本地全文：下载
作者：中村聡 ; 生天目翔 ; 大野光平等
期刊名称：映像情報メディア学会誌
印刷版ISSN：1342-6907
电子版ISSN：1881-6908
出版年度：2013
卷号：67
期号：6
页码：J194-J203
DOI：10.3169/itej.67.J194
出版社：The Institute of Image Information and Television Engineers
摘要：In Japanese digital terrestrial television broadcasting (DTTB), the identification of multi-path is important to improve its reception characteristics. To enhance the resolution of the delay profile, connecting continuous multiple channels and the extended frequency bandwidth are effective. However, the guard band is existing between each channel and the transfer function is not obtained directly. The phases of each channel are not synchronized because the each channel is broadcasted independently. In this paper, a method to connect multiple channels is proposed. Interpolation of the guard band by using the liner adaptive predictor based on the RLS algorithm and compensation of phase between adjacent channels are performed. As a result, it is confirmed that resolution enhancement of the delay profile is possible. It is possible to improve the time resolution of the delay profile to below 0.024[μs].
关键词：OFDM;ISDB-T;DTTB;Multi-path;Delay Profile;RLS Algorithm;Channel Connection