公开(公告)号：DE69938861D1

公开(公告)日：2008-07-17

申请号：DE69938861

申请日：1999-12-10

Applicant: LUCENT TECHNOLOGIES INC

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

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

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：DE69809676T2

公开(公告)日：2003-09-18

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：AU1956300A

公开(公告)日：2000-09-07

申请号：AU1956300

申请日：2000-03-01

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTAND M ,  MARZETTA THOMAS LOUIS

IPC: H01Q21/30 ,  H01Q1/24 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/22 ,  H01Q21/00

Abstract: We disclose a system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, wherein there is a ratio r equal to the larger divided by the smaller of these wavelengths. The system comprises a receiver operative to receive signals imposed on a carrier having the uplink wavelength, a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength, and an array of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter, such that transmitted signals can be radiated from it, and the other sub-array is electrically coupled to the receiver, such that signals to be received can be extracted from it. The sub-arrays are geometrically similar to each other with a relative scale factor equal to the wavelength ratio r. The sub-arrays have at least one common antenna element.

公开(公告)号：DE60019359T2

公开(公告)日：2006-02-02

申请号：DE60019359

申请日：2000-02-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H01Q21/30 ,  H01Q1/24 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/22

Abstract: We disclose a system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, wherein there is a ratio r equal to the larger divided by the smaller of these wavelengths. The system comprises a receiver operative to receive signals imposed on a carrier having the uplink wavelength, a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength, and an array of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter, such that transmitted signals can be radiated from it, and the other sub-array is electrically coupled to the receiver, such that signals to be received can be extracted from it. The sub-arrays are geometrically similar to each other with a relative scale factor equal to the wavelength ratio r. The sub-arrays have at least one common antenna element.

公开(公告)号：DE69904284D1

公开(公告)日：2003-01-16

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：CA2298219C

公开(公告)日：2002-07-09

申请号：CA2298219

申请日：2000-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H01Q21/30 ,  H01Q1/24 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/22 ,  H01Q21/28 ,  H04B7/00

Abstract: We disclose a system for sending wireless communication signals on at lea st one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, wherein there is a ratio r equal to the larger divide d by the smaller of these wavelengths. The system comprises a receiver operative to receive signals imposed on a carrier having the uplink wavelength, a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength, and an array of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter, such that transmitted signals can b e radiated from it, and the other sub-array is electrically coupled to the receiver, su ch that signals to be received can be extracted from it. The sub-arrays are geometrically similar to each other with a relative sca le factor equal to the wavelength ratio r. The sub-arrays have at least one common antenna element.

公开(公告)号：CA2247618C

公开(公告)日：2001-07-24

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-channels from the actual communications channel. The multiple antenna system creates the virtual sub-channels from the actual communications channel by using propaga tioninformation characterizing the actual communications channel at the first and second units. For transmissions from the first unit to the second unit, the first u nit sends a virtual transmitted signal over at least a subset of the virtual sub-channel s using at least a portion of the propagation information. The second unit retrieves a corresponding virtual received signal from the same set of virtual sub-chann els using at least another portion of said propagation information.

公开(公告)号：CA2298219A1

公开(公告)日：2000-09-01

申请号：CA2298219

申请日：2000-02-09

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H01Q21/30 ,  H01Q1/24 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/22 ,  H01Q21/28 ,  H04B7/00

Abstract: We disclose a system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, wherein there is a ratio r equal to the larger divided by the smaller of these wavelengths. The system comprises a receiver operative to receive signals imposed on a carrier having the uplink wavelength, a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength, and an array of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter, such that transmitted signals can be radiated from it, and the other sub-array is electrically coupled to the receiver, such that signals to be received can be extracted from it. The sub-arrays are geometrically similar to each other with a relative scale factor equal to the wavelength ratio r. The sub-arrays have at least one common antenna element.

公开(公告)号：DE69931436T2

公开(公告)日：2007-05-24

申请号：DE69931436

申请日：1999-08-02

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H01Q3/26 ,  H04L1/06 ,  H04B7/06 ,  H04B7/08 ,  H04B7/26

Abstract: Disclosed is a modulation method for wireless signal transmission. Each message that is transmitted is made up of a sequence of signals, each selected from a constellation of L such signals, L a positive integer. Each transmitted signal is distributed spatially across a transmitting antenna array, and is also distributed in time. Thus, each signal may be represented as a TxM matrix, in which each of the M columns represents a distinct antenna of the array, and each of the T rows represents a distinct time interval. Each entry in this matrix represents a complex baseband voltage amplitude. Each of these signal matrices is proportional to a matrix having orthonormal columns.

公开(公告)号：DE60019359D1

公开(公告)日：2005-05-19

申请号：DE60019359

申请日：2000-02-22

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HOCHWALD BERTRAND M ,  MARZETTA THOMAS LOUIS

IPC: H01Q21/30 ,  H01Q1/24 ,  H01Q21/06 ,  H01Q21/08 ,  H01Q21/22

Abstract: We disclose a system for sending wireless communication signals on at least one downlink wavelength and receiving wireless communication signals on at least one uplink wavelength, wherein there is a ratio r equal to the larger divided by the smaller of these wavelengths. The system comprises a receiver operative to receive signals imposed on a carrier having the uplink wavelength, a transmitter operative to transmit signals imposed on a carrier having the downlink wavelength, and an array of independent antenna elements. The array comprises a first and a second sub-array. One sub-array is electrically coupled to the transmitter, such that transmitted signals can be radiated from it, and the other sub-array is electrically coupled to the receiver, such that signals to be received can be extracted from it. The sub-arrays are geometrically similar to each other with a relative scale factor equal to the wavelength ratio r. The sub-arrays have at least one common antenna element.