公开(公告)号：EP1722499B1

公开(公告)日：2011-02-16

申请号：EP05720046.1

申请日：2005-03-04

申请人： NTT DoCoMo, Inc. ,  NEC Corporation

发明人： KAWAMOTO, Junichiro, NTT DoCoMo, Inc., I.P. Dept. ,  MAEDA, Noriyuki, NTT DoCoMo, Inc., I.P. Dept. ,  HIGUCHI, Kenichi, NTT DoCoMo, Inc., I.P. Dept. ,  SAWAHASHI, Mamoru, NTT DoCoMo, Inc., I.P. Dept. ,  YOSHIDA, Shousei, NEC Corporation ,  KIMATA, Masayuki, NEC Corporation

IPC分类号： H04B1/707 ,  H04B1/10 ,  H04B7/26

CPC分类号： H04B7/0854 ,  H04B1/7105 ,  H04B1/7107 ,  H04L1/0656 ,  H04L25/0228 ,  H04L2025/03426

摘要： A receiver apparatus that uses CDMA system to receive signals and that uses N reception antennas (where N is a positive integer) to receive signals transmitted from M transmission antennas (where M is a positive integer). The receiver apparatus comprises multipath reception signal reproducing means that performs a primary demodulation of the reception signals received via the respective reception antennas to estimate the transmission signals from the respective transmission antennas and that reproduces, based on such estimation results, the reception signals of the paths of the respective reception antennas in the multipath environment; multipath interference canceling means that subtracts, from the reception signals received via the reception antennas, the reproduced reception signals of the paths which are other than a path of interest; and demodulating means that uses the signal as obtained by that subtraction to perform a secondary demodulation.

公开(公告)号：EP1722499A1

公开(公告)日：2006-11-15

申请号：EP05720046.1

申请日：2005-03-04

申请人： NTT DoCoMo INC. ,  NEC CORPORATION

发明人： KAWAMOTO, Junichiro, NTT DoCoMo, Inc., I.P. Dept. ,  MAEDA, Noriyuki, NTT DoCoMo, Inc., I.P. Dept. ,  HIGUCHI, Kenichi, NTT DoCoMo, Inc., I.P. Dept. ,  SAWAHASHI, Mamoru, NTT DoCoMo, Inc., I.P. Dept. ,  YOSHIDA, Shousei, NEC Corporation ,  KIMATA, Masayuki, NEC Corporation

IPC分类号： H04J15/00 ,  H04B1/10 ,  H04B7/26 ,  H04J13/04

CPC分类号： H04B7/0854 ,  H04B1/7105 ,  H04B1/7107 ,  H04L1/0656 ,  H04L25/0228 ,  H04L2025/03426

摘要： A receiving apparatus, a receiving method, and a radio communications system are disclosed. The receiving apparatus is for receiving CDMA signals transmitted by M antennas and received by N antennas, where M and N are positive integers. The receiving apparatus includes a multipath receiving signal demodulating unit for primary demodulation of the CDMA signals received by the receiving antennas to obtain estimated transmission signals, and for' obtaining signals in a multipath environment of each path of the receiving antennas based on the estimated results. Further, the receiving apparatus includes a multipath interference canceling unit for deducting signals of the paths other than a target path from the signals received by the receiving antennas to obtain multipath interference cancelled signals. Further, the receiving apparatus includes a demodulator for secondary demodulation of the multipath interference cancelled signals.

摘要翻译： 公开了接收装置，接收方法和无线电通信系统。 接收装置用于接收由M个天线发射并由N个天线接收的CDMA信号，其中M和N是正整数。 接收装置包括：多径接收信号解调单元，用于对由接收天线接收的CDMA信号进行一次解调以获得估计的传输信号，并且用于根据估计的结果在接收天线的每条路径的多径环境中获得信号。 此外，接收装置包括：多径干扰消除单元，用于从由接收天线接收的信号中扣除目标路径以外的路径的信号，以获得多路径干扰消除信号。 此外，接收装置包括用于二次解调多路径干扰消除信号的解调器。