-
公开(公告)号：BR0008496A
公开(公告)日：2002-09-24
申请号：BR0008496
申请日：2000-02-25
Applicant: QUALCOMM INC
Inventor： TIEDEMANN EDWARD G JR , SHANBHAG ABHIJIT G , ODENWALDER JOSEPH P , WILLENEGGER SERGE , SARKAR SANDIP , TERASAWA DAISUKE
Abstract: A method and system for generating forward link channels in a synchronous CDMA base station having a pilot pseudonoise (PN) sequence with a pilot PN sequence offset. In one embodiment the method includes the steps of generating a sync channel including a sync channel message; generating an identification channel including at least the pilot PN sequence offset; and orthogonalizing the sync channel and the identification channel. The identification channel and the sync channel are both transmitted. However, the mobile station may get the pilot PN offset from the identification channel quickly, rather than having to demodulate the entire sync channel message. The identification channel may further include an indication of the phase of the pilot PN sequence, and the epoch of the pilot PN sequence. In one embodiment, the method includes encoding the identification channel using a Golay code.
-
公开(公告)号：HK1037812A1
公开(公告)日：2002-02-15
申请号：HK01108357
申请日：2001-11-28
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , TIEDEMANN EDWARD G JR , HOLTZMAN JACK , TERASAWA DAISUKE
Abstract: A first signal (74a) and a second signal (74b) are time-offset by a period to. Careful selection of the period to allows the peak-to-average transmit power ratio to be reduced.
-
公开(公告)号：AU1317600A
公开(公告)日：2000-05-08
申请号：AU1317600
申请日：1999-10-18
Applicant: QUALCOMM INC
Inventor： TERASAWA DAISUKE , AGRAWAL AVNEESH , JOU YU-CHEUN , HARMS BRIAN , BUTLER BRIAN K
Abstract: Method for PN spreading a SCMA signal using a truncated PN sequence. Method for generating said truncated PN sequence. Method for generating a second truncated PN sequence by masking the first truncated sequence. A method for generating a phase shifted version of a truncated PN sequence.
-
公开(公告)号：AU5491999A
公开(公告)日：2000-03-14
申请号：AU5491999
申请日：1999-08-17
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , TIEDEMANN EDWARD G JR , HOLTZMAN JACK M , TERASAWA DAISUKE
IPC: H04B1/707 , H04B1/7097 , H04B7/005 , H04L27/26
Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.
-
公开(公告)号：AT449471T
公开(公告)日：2009-12-15
申请号：AT03781531
申请日：2003-10-24
Applicant: QUALCOMM INC
Inventor： SHIU DA-SHAN , TERASAWA DAISUKE
Abstract: A method and apparatus for determining an operational mode for use in a wireless communication system based on a location, a velocity, or both, of a wireless communication device (WCD) in relation to a wireless network infrastructure is described. The selected mode can be used by various devices within the communication system. Modes that are selected include transmit diversity and site selection diversity.
-
Patent Agency Ranking
公开(公告)号：AT423410T
公开(公告)日：2009-03-15
申请号：AT06000676
申请日：2003-08-29
Applicant: QUALCOMM INC
Inventor： SENDONARIS ANDREW , SHIU DA-SHAN , PATTERSON DAVID M , SUBRAHMANYA PARVATHANATHAN , TERASAWA DAISUKE
Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.
-
公开(公告)号：DE69937643T2
公开(公告)日：2008-10-30
申请号：DE69937643
申请日：1999-08-17
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN A , TIEDEMANN EDWARD G , HOLTZMAN JACK M , TERASAWA DAISUKE
IPC: H04B1/707 , H04B1/7097 , H04B7/005 , H04L27/26
Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.
-
公开(公告)号：AT379881T
公开(公告)日：2007-12-15
申请号：AT99941226
申请日：1999-08-17
Applicant: QUALCOMM INC
Inventor： LUNDBY STEIN , TIEDEMANN EDWARD , HOLTZMAN JACK , TERASAWA DAISUKE
IPC: H04B1/707 , H04B1/7097 , H04B7/005 , H04L27/26
Abstract: A method for limiting peak transmit power in a CDMA communication system by transmitting a first communication signal having a first high transmit power region, and transmitting a second communication signal having a second high transmit power region. A first and a second communication signal are time offset to prevent the first and second high transmit power regions from occurring simultaneously. Time shifting only a portion of the first and second communication signals is also taught. The first and second communication signals can also include respective first and second low transmit power regions. The time offset can be selected to align one of the first and second high transmit power regions with one of the first and second low transmit power regions. The total transmit power signal can be determined and the time offset can be selected to minimize a peak level of the total transmit power signal. The communication signals are separated into a plurality of portions and portions of the first and second communication signals are time offset to re-order the sequence of transmission of the plurality of portions.
-
公开(公告)号：DE60126932T2
公开(公告)日：2007-11-08
申请号：DE60126932
申请日：2001-05-18
Applicant: QUALCOMM INC
Inventor： TERASAWA DAISUKE , GRILLI FRANCESCO , WILLENEGGER SERGE
Abstract: A novel and improved method and apparatus, in a WCDMA communication system, for informing a mobile station of a downlink data frame time offset by determining the downlink data frame time offset, and transmitting the downlink data frame time offset via an Active Set Update message transmitted from a cell to mobile station. Once an Active Set Update message is received, the data frame time offset information is provided to a timing block which may determine data frame boundary of each downlink signal. Timing block may then adjust the PN sequence timing corresponding to the downlink signal associated with the data frame time offset such that corresponding data symbols in each data frame are correctly soft combined in a combiner.
-
20.发明专利
公开(公告)号：ES2274889T3
公开(公告)日：2007-06-01
申请号：ES01937580
申请日：2001-05-18
Applicant: QUALCOMM INC
Inventor： TERASAWA DAISUKE , GRILLI FRANCESCO , WILLENEGGER SERGE
Abstract: Un procedimiento para una operación de transferencia progresiva en un sistema (100) de comunicaciones WCDMA, que comprende: transmitir tramas de datos desde una primera estación (102) base a una estación (101) móvil de acuerdo con un primer desfase (122) temporal de las tramas de datos del enlace descendente, estando ajustado dicho primer desfase (122) temporal de las tramas de datos del enlace descendente a partir de una temporización de las tramas de canal de la primera estación (102) base; medir un primer desfase temporal del enlace descendente observado experimentado en dicha estación (101) móvil entre una primera transmisión (111) de enlace descendente recibida de dicha primera estación (102) base y una temporización (120) de enlace ascendente.
-
-
-
-
-
-
-
-
-
Search Results
88
records
(took 0.045 seconds)
