公开(公告)号：EP1446892A1

公开(公告)日：2004-08-18

申请号：EP02783365.6

申请日：2002-11-07

申请人： D.S.P.C. Technologies LTD.

发明人： YELLIN, Daniel ,  PICK, Kobby ,  PERETS, Yoni

IPC分类号： H04B1/707 ,  H04L25/02

CPC分类号： H04B1/71055 ,  H04L25/0232

摘要： A multi-user detector for use in a CDMA receiver system includes a channel tap interpolator to generate interpolated channel taps for users of interest. The interpolated channel taps occur at integer multiples of a chip period from a sampling reference point. The channel tap interpolation allows detection processing to proceed in the chip domain, rather than in the sample domain, thus reducing the complexity of the multi-user solution significantly. In at least one approach, a number of low dimensionality 'virtual' users are defined based on the recursive property of the spreading sequences. Solutions may then be developed for the virtual users using conventional detection (e.g., MMSE) techniques.

公开(公告)号：EP1470652A1

公开(公告)日：2004-10-27

申请号：EP03702804.0

申请日：2003-01-24

申请人： D.S.P.C. Technologies LTD.

发明人： MOSHAVI, Shimon ,  YELLIN, Daniel ,  PERETS, Yoni ,  HAGIN-METZER, Tsofnat

IPC分类号： H04B1/707

CPC分类号： H04B1/707 ,  H04B1/7085 ,  H04B1/7117 ,  H04B7/022 ,  H04B2201/70701 ,  H04B2201/70702

摘要： A receiver includes a searcher to identify pilot signals within a received signal and a pilot tracking unit to continuously track pilot signals identified by the searcher. The pilot signals tracked by the pilot tracking unit may include pilot signals associated with an affiliated base station as well as pilot signals associated with non-affiliated base stations. In at least one embodiment, the pilot tracking unit continuously tracks most or all of the pilot signals identified by the searcher.