公开(公告)号：AU2004310960C1

公开(公告)日：2009-10-29

申请号：AU2004310960

申请日：2004-11-15

Applicant: QUALCOMM INC

Inventor： KETCHUM JOHN W ,  WALTON J RODNEY

IPC: H04B7/06 ,  H04B7/26 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L27/26 ,  H04W28/18 ,  H04W36/00 ,  H04W72/14

公开(公告)号：AU2003287328C1

公开(公告)日：2009-10-29

申请号：AU2003287328

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： KETCHUM JOHN W ,  WALTON J RODNEY ,  WALLACE MARK ,  HOWARD STEVEN J

IPC: H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J99/00 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26 ,  H04W16/28 ,  H04W52/50

Abstract: Channel estimation and spatial processing for a TDD MIMO system. Calibration may be performed to account for differences in the responses of transmit/receive chains at the access point and user terminal. During normal operation, a MIMO pilot is transmitted on a first link and used to derive an estimate of the first link channel response, which is decomposed to obtain a diagonal matrix of singular values and a first unitary matrix containing both left eigenvectors of the first link and right eigenvectors of a second link. A steered reference is transmitted on the second link using the eigenvectors in the first unitary matrix, and is processed to obtain the diagonal matrix and a second unitary matrix containing both left eigenvectors of the second link and right eigenvectors of the first link. Each unitary matrix may be used to perform spatial processing for data transmission/reception via both links.

公开(公告)号：UA87973C2

公开(公告)日：2009-09-10

申请号：UA2005004947

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  KETCHUM JOHN W ,  WALLACE MARK S ,  HOWARD STEPHAN J

IPC: H04L1/02 ,  H04L1/00 ,  H04L1/06

Abstract: Терминалпользователя, которыйподдерживаетнесколькорежимовпространственногомультиплексирования (SM), такихкакнаправленныйрежими ненаправленныйрежим. Дляпередачиданныхнесколькопотоковданныхкодируютсяи модулируютсяв соответствиис ихвыбраннымискоростямидляполучениянесколькихпотоковсимволовданных. Потомосуществляетсяпространственнаяобработкаэтихпотоков, всоответствиис выбраннымрежимом SM (например, матрицейнаправляющихвекторовдлянаправленногорежимаи единичнойматрицейдляненаправленногорежима), дляполучениянесколькихпотоковсимволовпередачидляпередачиизнескольки

公开(公告)号：UA86752C2

公开(公告)日：2009-05-25

申请号：UA2005004943

申请日：2003-10-24

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  WALLACE MARK S

IPC: H04L1/02 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

Abstract: Способывыявленияи демодуляциипередачданныхв системахбеспроводнойсвязи. Водномаспекте, детекторуправленияв соответствиис решениемвыявляетпередачиданныхв принятомсигнале, используяпринятыесимволыданных. Атакжепринятыесимволыпилот-сигнала. Детекторуправленияв соответствиис решениемможетбытьпредназначендлявыполнениядифференциальноговыявленияв частотнойобластииликогерентноговыявлениявовременнойобластии можетбытьиспользованпримодуляциисомногиминесущими (например, ОЧРК). Вдругомаспекте, адаптивныйпорогиспользуютдлявыявленияпринятыхпередачданных. Порогможетбытьопределендлякаждойгипотетическипринятойпередачиданных. Порогможетбытьвычислен, например, наосновеэнергиисигналаи шумагипотетичнойпередачиданных.

公开(公告)号：SG150536A1

公开(公告)日：2009-03-30

申请号：SG2009012113

申请日：2004-11-12

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  KETCHUM JOHN W ,  SMEE JOHN EDWARD ,  WALLACE MARK S ,  HOWARD STEVEN J

IPC: H04B7/06 ,  H04J11/00 ,  H04J99/00 ,  H04L5/02 ,  H04Q7/36

Abstract: MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An 'effective' uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.

公开(公告)号：SG143245A1

公开(公告)日：2008-06-27

申请号：SG2008033482

申请日：2006-01-27

Applicant: QUALCOMM INC

Inventor： WALLACE MARK S ,  KETCHUM JOHN W ,  WALTON J RODNEY ,  HOWARD STEVEN J

IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L1/06 ,  H04L1/08 ,  H04L1/16 ,  H04L5/14 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26

Abstract: No abstract.

公开(公告)号：CA2844937A1

公开(公告)日：2007-11-29

申请号：CA2844937

申请日：2007-05-22

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  WALLACE MARK S ,  MEDVEDEV IRINA ,  HOWARD STEVEN J

IPC: H04B7/01 ,  H04B1/76 ,  H04W56/00

Abstract: Techniques for performing phase correction for wireless communication are described. Received pilot symbols and received data symbols may be obtained from an orthogonal frequency division multiplexing (OFDM) and/or multiple-input multiple-output (MIMO) transmission. First phase information is obtained based upon the received pilot symbols. Second phase information is obtained based upon the received data symbols. The phase of the received data symbols is corrected based upon the first and second phase information (directly and/or indirectly). For example, the phase of the received data symbols may be corrected based upon the first phase information, detection may be performed on the phase corrected data symbols to obtain estimated data symbols, the second phase information may be obtained based upon the estimated data symbols, and the phase of the estimated data symbols may be corrected based upon the second phase information. The phase correction may also be performed in other manners.

公开(公告)号：CA2650430A1

公开(公告)日：2007-11-29

申请号：CA2650430

申请日：2007-05-22

Applicant: QUALCOMM INC

Inventor： KETCHUM JOHN W ,  HOWARD STEVEN J ,  WALTON J RODNEY ,  WALLACE MARK S

IPC: H04L1/06

公开(公告)号：BRPI0417069A

公开(公告)日：2007-03-13

申请号：BRPI0417069

申请日：2004-11-15

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  KETCHUM JOHN W

IPC: H04B7/06 ,  H04B7/26 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04L12/28 ,  H04L12/56 ,  H04L25/02 ,  H04L27/26 ,  H04W28/18 ,  H04W36/00 ,  H04W72/14 ,  H04Q7/38

公开(公告)号：BRPI0416940A

公开(公告)日：2007-02-13

申请号：BRPI0416940

申请日：2004-11-24

Applicant: QUALCOMM INC

Inventor： WALTON J RODNEY ,  NANDA SANJIV

IPC: H04L12/28 ,  H04L12/56 ,  H04W8/18 ,  H04W28/18 ,  H04W28/26 ,  H04W72/04 ,  H04W72/12 ,  H04Q7/38

Abstract: In one aspect of the invention, a communication device, operable with a plurality of remote devices, and operable with an admission profile comprising a capacity reservation for zero or more remote devices, comprises a scheduler for determining if a remote device corresponding to the data transmission indicator has a capacity reservation in the admission profile and for allocating capacity in accordance with the data transmission indicator. In another aspect, data indicators correspond to one or more service levels. Remaining capacity may be allocated in priority of increasing size of data transmission requirement. In yet another aspect, an admission profile is updated to accept a new flow, characterized by flow parameters, in accordance with available system capacity. Various other aspects are also presented.