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31. 发明专利

JP2005045664A Ofdm signal carrier data equalizer and ofdm signal receiver device 有权
标题翻译： OFDM信号载波数据均衡器和OFDM信号接收器装置
公开(公告)号：JP2005045664A
公开(公告)日：2005-02-17
申请号：JP2003279173
申请日：2003-07-24
申请人： Nippon Hoso Kyokai , 日本放送協会
发明人： KANBARA KOHEI , NAKAHARA SHUNJI , ITO YASUHIRO
IPC分类号： H04J11/00 , H04B7/005
摘要： PROBLEM TO BE SOLVED: To provide an OFDM signal carrier data equalizer capable of equalizing a received signal for the multipath of short delay time and for the multipath of long delay time, in particular, equalizing a received signal with higher accuracy for the multipath of short delay time, and to provide an OFDM signal receiver device.
SOLUTION: Frequency responses (h
1 (i, t), h
2 (i, t)) (i: symbol number, t: delay time) of a transmission path are calculated from SP (Scattered Pilot) signals for past 4 symbols including the latest symbol for the multipath of long delay time, and from SP signals only for the latest symbol for the multipath of short delay time. Highly accurate equalizing is conducted for time variation in fast speed, particularly in the case of the multipath of short delay time, based on the calculated result.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供能够对短延迟时间的多径的接收信号进行均衡并且对于长延迟时间的多径的OFDM信号载波数据均衡器，特别是对于多路延迟时间短，并提供OFDM信号接收设备。解决方案：频率响应（h 1（i，t），h 2（i，t））（i：符号数，t：延迟时间）对于包括用于长延迟时间的多路径的最新符号的过去4个符号的SP（散射导频）信号以及仅针对短延迟时间的多径的最新符号的SP信号计算传输路径。基于计算结果，对于快速的时间变化进行高精度均衡，特别是在延迟时间短的情况下。版权所有（C）2005，JPO＆NCIPI

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