公开(公告)号：EP2270993A4

公开(公告)日：2011-07-27

申请号：EP09734275

申请日：2009-04-21

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： FUJINO YOSUKE ,  UCHIDA DAISEI ,  FUJITA TAKAFUMI

IPC分类号： H04B1/04 ,  H04B1/16

CPC分类号： H04L27/0014 ,  H04L27/18 ,  H04L27/34 ,  H04L2027/0026 ,  H04L2027/0067 ,  H04L2027/0095

摘要： A radio communication system includes a transmission device which transmits a plurality of radio signals, and a reception device which receives the plurality of radio signals from the transmission device and estimates, as a carrier frequency offset, a difference between a carrier frequency transmitted by the transmission device and a reference reception frequency used for reception. The system includes the transmission device which branches a first previously determined sequence of training signals, and transmits the radio signals modulated with frequencies by the carrier frequency offsets having regularity for a first sequence of a plurality of branched training signals, and the reception device which estimates the carrier frequency offset with the transmission device according to the first sequence of training signals included in the radio signals transmitted from the transmission device and phase shift amounts obtained from the first previously determined sequence of training signals.

摘要翻译： 一种无线电通信系统包括：发送装置，其发送无线电信号的多个，并且其接收从发送装置和估计无线电信号的多个A接收装置，作为一个载波频率偏移，由发送mitted载波频率反式之间的差 装置和用于接收基准接收频率。 该系统包括发送装置，该装置分支锻炼信号的第一先前确定的开采序列，并发送通过具有用于支锻炼信号的多个第一序列规律性的载波频率偏移与频率调制的无线电信号，并且其中估计所述接收装置 载波频率与所述发送装置gemäß锻炼信号的第一序列偏移包括在从锻炼信号的第一确定性先前开采的序列获得的发送装置和相移量的无线电信号的反式mitted。

公开(公告)号：EP1924043A4

公开(公告)日：2012-02-22

申请号：EP06797456

申请日：2006-09-05

申请人： NIPPON TELEGRAPH & TELEPHONE

发明人： FUJITA TAKAFUMI ,  UCHIDA DAISEI ,  FUJINO YOSUKE ,  KAGAMI OSAMU ,  UMEHIRA MASAHIRO

IPC分类号： H04L27/22

CPC分类号： H04L27/3836 ,  H04L25/0226 ,  H04L25/0232 ,  H04L27/261 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04L27/2692 ,  H04L27/2695 ,  H04L2027/0065 ,  H04L2027/0093

摘要： A wireless transmitting apparatus inserts a training signal into a transmission burst at fixed symbol intervals as a pilot signal, a wireless receiving apparatus performs AD conversion of a received burst signal, performs symbol timing recovery, performs frame position detection and pilot signal extraction from the received burst signal for which symbol timing was established, performs frame synchronization, and performs a carrier frequency estimation using pilot signal. A carrier frequency estimation is also performed with respect to a received burst signal for which frame synchronization was established, and channel distortion is estimated and output based on a frequency-corrected received burst signal. Channel distortion estimation is then performed with respect to a frequency-corrected received burst signal, and a data symbol sequence of the channel-compensated received burst signal is converted to a received data bit stream.