公开(公告)号：EP2926473B1

公开(公告)日：2019-05-08

申请号：EP13708258.2

申请日：2013-02-06

申请人： Qualcomm Incorporated

发明人： GARIN, Lionel Jacques ,  SRIDHARA, Vinay ,  ZHANG, Xiaoxin ,  RAMAN, Sundar ,  ZHANG, Gengsheng ,  ARROYO, Bernal A. ,  ALDANA, Carlos Horacio

IPC分类号： H04B7/06 ,  H04B7/08

公开(公告)号：EP2926473A1

公开(公告)日：2015-10-07

申请号：EP13708258.2

申请日：2013-02-06

申请人： Qualcomm Incorporated

发明人： GARIN, Lionel Jacques ,  SRIDHARA, Vinay ,  ZHANG, Xiaoxin ,  RAMAN, Sundar ,  ZHANG, Gengsheng ,  ARROYO, Bernal A. ,  ALDANA, Carlos Horacio

IPC分类号： H04B7/06 ,  H04B7/08

CPC分类号： H04W24/00 ,  H04B7/0671 ,  H04B7/0828 ,  H04B7/0874

摘要： Systems, apparatus and methods for determining a cyclic shift delay (CSD) mode from a plurality of CSD modes is disclosed. A received OFDM signal is converted to a channel impulse response (CIR) signal in the time domain and/or a channel frequency response (CFR) signal in the frequency domain. Matched filters and a comparator are used to determine a most likely current CSD mode. Alternatively, a classifier is used with a number of inputs including outputs from two or more matched filters and one or more outputs from a feature extractor. The feature extractor extracts features in the time domain from the CIR signal and/or in the frequency domain from the CFR signal useful in distinguishing various CSD modes.