公开(公告)号：DE69904284T2

公开(公告)日：2003-08-28

申请号：DE69904284

申请日：1999-11-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS ,  RICHARDSON THOMAS J ,  SWELDENS WIM ,  URBANKE RUDIGER L

IPC: H04L27/00 ,  H04B1/10 ,  H04B7/04 ,  H04B7/26 ,  H04L1/06 ,  H04B7/06

公开(公告)号：DE69809676D1

公开(公告)日：2003-01-09

申请号：DE69809676

申请日：1998-09-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04B17/00 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04B7/04

公开(公告)号：CA2292832A1

公开(公告)日：2000-07-04

申请号：CA2292832

申请日：1999-12-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： MARZETTA THOMAS LOUIS ,  PAPADIAS CONSTANTINOS BASIL ,  HOCHWALD BERTRAND M

IPC: H04B1/707 ,  H04B7/06 ,  H04B7/26 ,  H04Q7/38

Abstract: We describe a method for CDMA transmission of sets of data symbols to users that are organized into one or more user groups. Each user group is paired with a group of spreading codes, referred to as a "code group." Each set of data symbols that are destined for respective users of a given user group is transmitted in the form of two or more distinct signal sequences. Each such signal sequence is transmitted from a respective one of two or more transmitting antennas. Each signal sequence is a linear combination of spreading code sequences belonging to the corresponding code group. Within each of these linear combinations, each spreading code sequence that appears has a scalar coefficient. Each of these scalar coefficients is a linear combination of pertinent data symbols (i.e., data symbols destined for users in the given user group) or of complex conjugates of pertinent data symbols.

公开(公告)号：CA2247618A1

公开(公告)日：1999-03-26

申请号：CA2247618

申请日：1998-09-17

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H04L5/00 ,  H04B7/06 ,  H04B7/08 ,  H04B17/00 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04B7/04 ,  H04L1/22

Abstract: A communications system achieves high bit rates over an actual communications channel between M transmitter antennas of a first unit and N receiver antennas of a second unit, where M or N > 1, by creating virtual sub-ch annels from the actual communications channel. The multiple antenna system creates the virtual sub-channels from the actual communications channel by using propagation information characterizing the actual communications channel at the first and se cond units. For transmissions from the first unit to the second unit, the first unit sends a virtual transmitted signal over at least a subset of the virtual sub-channels us ing at least a portion of the propagation information. The second unit retrieves a corresponding virtual received signal from the same set of virtual sub-channels using at least another portion of said propagation information.

公开(公告)号：WO2009017691A2

公开(公告)日：2009-02-05

申请号：PCT/US2008009082

申请日：2008-07-25

Applicant: LUCENT TECHNOLOGIES INC ,  ASHIKHMIN ALEXEI ,  DE LIND VAN WIJNGAARDEN ADRIAA ,  MARZETTA THOMAS LOUIS

Inventor： ASHIKHMIN ALEXEI ,  DE LIND VAN WIJNGAARDEN ADRIAAN J ,  MARZETTA THOMAS LOUIS

IPC: H04L27/26

CPC classification number: H04L27/2662 ,  H04L27/2607 ,  H04L27/2666 ,  H04L27/2678

Abstract: Various embodiments generally relate to a method for synchronizing a receiver, said method including receiving a stream that includes a cyclic extension, estimating a size of the cyclic extension, extracting an amount of the stream according to the estimated size, and comparing the extracted amount to the stream to determine thereby a portion of the stream likely to include a symbol start point.

Abstract translation: 各种实施例通常涉及用于同步接收机的方法，所述方法包括接收包括循环扩展的流，估计循环扩展的大小，根据估计大小提取流量，并将提取的量与 该流由此确定流的一部分可能包括符号起始点。