公开(公告)号：DE69939078D1

公开(公告)日：2008-08-21

申请号：DE69939078

申请日：1999-08-30

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  TERASAWA DAISUKE ,  RAZOUMOV LEONID

IPC: H04L27/26 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04W52/04

Abstract: The invention provides a method and apparatus for reducing transmission signal power or interference of transmitted communication signals suitable for use in a communication system having a base station and a plurality of user stations that exchange communication signals with the base station. An input node receives channel data for transmission on a plurality of channels to the plurality of user stations, wherein the channel data includes pilot symbol data. A processor determines symbol positions in which each of the plurality of user stations expect to find pilot symbols. A transmitter transmits to the plurality of user stations pilot symbols only in symbol positions that the plurality of user stations expect to find pilot symbols, and failing to transmit pilot symbols in other symbol positions.

公开(公告)号：AU2007202000B2

公开(公告)日：2008-07-17

申请号：AU2007202000

申请日：2007-05-04

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN A ,  RAZOUMOV LEONID

IPC: H04J13/00 ,  H04B7/005 ,  H04B7/26 ,  H04J3/00

公开(公告)号：AT400956T

公开(公告)日：2008-07-15

申请号：AT05018036

申请日：1999-08-30

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  TERASAWA DAISUKE ,  RAZOUMOV LEONID

IPC: H04L27/26 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04W52/04

Abstract: The invention provides a method and apparatus for reducing transmission signal power or interference of transmitted communication signals suitable for use in a communication system having a base station and a plurality of user stations that exchange communication signals with the base station. An input node receives channel data for transmission on a plurality of channels to the plurality of user stations, wherein the channel data includes pilot symbol data. A processor determines symbol positions in which each of the plurality of user stations expect to find pilot symbols. A transmitter transmits to the plurality of user stations pilot symbols only in symbol positions that the plurality of user stations expect to find pilot symbols, and failing to transmit pilot symbols in other symbol positions.

公开(公告)号：CA2376194C

公开(公告)日：2008-02-05

申请号：CA2376194

申请日：2000-06-28

Applicant: QUALCOMM INC

Inventor： RAZOUMOV LEONID ,  LUNDBY STEIN A

IPC: H04B7/005 ,  H04B7/06 ,  H04B7/216 ,  H04B7/26

Abstract: The present invention is a novel and improved method and apparatus for contr ol transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter (64, 66) usin g orthogonal transmit diversity. In a first embodiment of the present inventio n, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR o f the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.

公开(公告)号：DE60036546D1

公开(公告)日：2007-11-08

申请号：DE60036546

申请日：2000-06-28

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN A ,  RAZOUMOV LEONID

IPC: H04B7/005 ,  H04B7/06 ,  H04B7/26

Abstract: The present invention is a novel and improved method and apparatus for control transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter using orthogonal transmit diversity. In a first embodiment of the present invention, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR of the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.

公开(公告)号：AT374464T

公开(公告)日：2007-10-15

申请号：AT00944991

申请日：2000-06-28

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN ,  RAZOUMOV LEONID

IPC: H04B7/005 ,  H04B7/06 ,  H04B7/26

Abstract: The present invention is a novel and improved method and apparatus for control transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter using orthogonal transmit diversity. In a first embodiment of the present invention, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR of the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.

公开(公告)号：AU2007202000A1

公开(公告)日：2007-05-24

申请号：AU2007202000

申请日：2007-05-04

Applicant: QUALCOMM INC

Inventor： LUNDBY STEIN A ,  RAZOUMOV LEONID

IPC: H04J13/00 ,  H04B7/005 ,  H04B7/26 ,  H04J3/00

公开(公告)号：DE69928269T2

公开(公告)日：2006-07-13

申请号：DE69928269

申请日：1999-08-30

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  TERASAWA DAISUKE ,  RAZOUMOV LEONID

IPC: H04L27/26 ,  H04B1/707 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04W52/04

Abstract: The invention provides a method and apparatus for reducing transmission signal power or interference of transmitted communication signals suitable for use in a communication system having a base station and a plurality of user stations that exchange communication signals with the base station. An input node receives channel data for transmission on a plurality of channels to the plurality of user stations, wherein the channel data includes pilot symbol data. A processor determines symbol positions in which each of the plurality of user stations expect to find pilot symbols. A transmitter transmits to the plurality of user stations pilot symbols only in symbol positions that the plurality of user stations expect to find pilot symbols, and failing to transmit pilot symbols in other symbol positions.

公开(公告)号：DE69928269D1

公开(公告)日：2005-12-15

申请号：DE69928269

申请日：1999-08-30

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  TERASAWA DAISUKE ,  RAZOUMOV LEONID

IPC: H04B1/707 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04L27/26 ,  H04W52/04

Abstract: The invention provides a method and apparatus for reducing transmission signal power or interference of transmitted communication signals suitable for use in a communication system having a base station and a plurality of user stations that exchange communication signals with the base station. An input node receives channel data for transmission on a plurality of channels to the plurality of user stations, wherein the channel data includes pilot symbol data. A processor determines symbol positions in which each of the plurality of user stations expect to find pilot symbols. A transmitter transmits to the plurality of user stations pilot symbols only in symbol positions that the plurality of user stations expect to find pilot symbols, and failing to transmit pilot symbols in other symbol positions.

公开(公告)号：AT309662T

公开(公告)日：2005-11-15

申请号：AT99942536

申请日：1999-08-30

Applicant: QUALCOMM INC

Inventor： HOLTZMAN JACK ,  TERASAWA DAISUKE ,  RAZOUMOV LEONID

IPC: H04B1/707 ,  H04B1/7103 ,  H04B7/005 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04L25/03 ,  H04L27/26 ,  H04W52/04

Abstract: The invention provides a method and apparatus for reducing transmission signal power or interference of transmitted communication signals suitable for use in a communication system having a base station and a plurality of user stations that exchange communication signals with the base station. An input node receives channel data for transmission on a plurality of channels to the plurality of user stations, wherein the channel data includes pilot symbol data. A processor determines symbol positions in which each of the plurality of user stations expect to find pilot symbols. A transmitter transmits to the plurality of user stations pilot symbols only in symbol positions that the plurality of user stations expect to find pilot symbols, and failing to transmit pilot symbols in other symbol positions.