-
公开(公告)号：DE69943301D1
公开(公告)日：2011-05-05
申请号：DE69943301
申请日：1999-12-07
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M , DICK STEPHEN G , KAZAKEVICH LEONID
-
公开(公告)号：AT503330T
公开(公告)日：2011-04-15
申请号：AT04013363
申请日：1999-12-07
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M , DICK STEPHEN G , KAZAKEVICH LEONID
Abstract: The present invention involves a system (61) for balancing a signal having I and Q components (63I, 63Q), characterized in that the system comprises: means for cross correlating (75) the I and Q components (63I, 63Q) to produce a cross correlation product (77); means for adjusting (93I, 93Q) a gain of each I and Q component (63I, 63Q) in accordance with said cross correlation product (77); and means for adding (69I, 69Q) the I component (63I) with an adjusted Q component (95I), and the Q component (63Q) with an adjusted I component (95Q) to produce a phase-balanced signal (73I, 73Q).
-
公开(公告)号：GEP20105084B
公开(公告)日：2010-10-11
申请号：GEAP2004009447
申请日：2004-11-12
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: A method for facilitating inter-system hando¬ver by a multi-mode wireless transmit/receive unit (WTRU) is disclosed. The WTRU is capable of commu¬nicating in multiple wireless communi¬cation systems using different wireless communica¬tion protocols. A first wireless communication sys¬tem provides a hot spot within the coverage area of a second wireless communication system. A base station in a cell in the second wireless communi¬cation system generates and transmits a message to inform the WTRU of the existence of the hot spot located in the vicinity of the cell. The WTRU receives the message and is therefore informed of the existence of the hot spot in the vicinity of the cell.
-
公开(公告)号：CA2564147C
公开(公告)日：2008-09-30
申请号：CA2564147
申请日：2000-08-23
Applicant: INTERDIGITAL TECH CORP
Inventor： KIERNAN BRIAN , OZLUTURK FATIH M
Abstract: The invention reduces transient peaks in signals transmitted in CDMA communication systems. A plurality of spread spectrum data signals are combined into a combined signal having fluctuating power level corresponding to the combination of the data signals. The combined signal is modulated to produce an RF signal for transmission. The average power of the combined signal is measured over a selected time period. The combined signal power level is adaptively limited to a calculated power leve l based at least in part on the measured power.
-
公开(公告)号：CA2413954C
公开(公告)日：2008-09-02
申请号：CA2413954
申请日：1997-06-23
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M , LOMP GARY R , HAIM JOHN W
Abstract: A subscriber terminal using a method of controlling initial power ramp-up in CDMA systems by using short codes is disclosed. The subscriber terminal includes having its transmission power regulated, with means for transmitting a periodic signal at an initial predetermined power level and repeatedly retransmitting the periodic signal each retransmission occurring at successively higher power levels; means for receiving a confirmation signal, and means for terminating transmission of the periodic signal in response to the received confirmation; means for engaging in a closed loop power control procedure to regulate the subscriber unit transmission power, after the periodic signal transmission terminating; and means for transmitting a call signal. The subscriber terminal using a method of controlling initial power ramp-up in CDMA systems by using short codes is particularly useful for overcoming the problems of power overshoot and interference to other subscriber stations known in the art and to provide for a base station to quickly synchronize to the spreading code used by the subscriber unit.
-
Patent Agency Ranking
公开(公告)号：AR060989A1
公开(公告)日：2008-07-30
申请号：ARP070102007
申请日：2007-05-09
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: En sistemas de entrada multiple salida multiple (MIMO) de multiplexacion por division de frecuencia ortogonal (OFDM), una unidad inalámbrica de transmision/recepcion (WTRU) selecciona un canal de acceso aleatorio (RACH) y una fase para una secuencia de autocorrelacion de amplitud constante cero (CAZAC) para una transmision de RACH. La WTRU transmite luego una transmision de RACH a un Nodo B a través del RACH seleccionado. Una vez detectada la transmision de RACH, el Nodo B envía una confirmacion (ACK) a la WTRU sobre un canal de ACK. El Nodo B puede transmitir la ACK sobre un canal compartido. La WTRU puede subir la potencia de transmision mientras que se transmite la transmision de RACH, o eleva en forma escalonada creciente la potencia de transmision de una transmision de RACH posterior. La transmision de RACH y la transmision de datos pueden ser ya sea multiplexadas con relacion al tiempo o bien, a la frecuencia. Puede definirse una pluralidad de RACHs y uno de los RACHs definidos puede ser seleccionado en forma aleatoria o en base a criterios predeterminados.
-
公开(公告)号：DE69839457D1
公开(公告)日：2008-06-19
申请号：DE69839457
申请日：1998-10-06
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: A method for use in a code division multiple access (CDMA) subscriber unit, the method comprising receiving first data transmitted from a first base station; selecting a second base station to transmit second data to the CDMA subscriber unit; transmitting a signal to the second base station, wherein the signal designates the second base station, instead of the first base station, to transmit the second data to the CDMA subscriber unit; receiving a power command from the first base station after transmitting the signal; and adjusting an output power of the CDMA subscriber unit in response to the power command after the second base station is selected.
-
公开(公告)号：AT394888T
公开(公告)日：2008-05-15
申请号：AT04022458
申请日：1998-10-06
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: A method for use in a code division multiple access (CDMA) subscriber unit, the method comprising receiving first data transmitted from a first base station; selecting a second base station to transmit second data to the CDMA subscriber unit; transmitting a signal to the second base station, wherein the signal designates the second base station, instead of the first base station, to transmit the second data to the CDMA subscriber unit; receiving a power command from the first base station after transmitting the signal; and adjusting an output power of the CDMA subscriber unit in response to the power command after the second base station is selected.
-
79.发明专利
公开(公告)号：ES2282768T3
公开(公告)日：2007-10-16
申请号：ES04018352
申请日：1998-05-20
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M
Abstract: Un generador (30) de códigos para generar secuencias de códigos complejos seudo-aleatorios de cuatro fases, caracterizado porque comprende: una pluralidad de circuitos biestables (321-322L); un acumulador (31), con una primera entrada para recibir una salida de la pluralidad de circuitos biestables (321-322L), y una segunda entrada para recibir el resultado del cociente entre un número M y un número N, siendo M y N números enteros y primos entre sí, combinando el acumulador (31) datos recibidos por medio de la primera y la segunda entradas, y transmitiendo los datos combinados a la pluralidad de circuitos biestables (321-322L); un extractor (33), que extrae dos bits de la pluralidad de circuitos biestables (321-322L); un primer convertidor (35), para convertir uno primero de los bits en un código I; y un segundo convertidor (36), para generar un código Q basándose en los dos bits.
-
公开(公告)号：HK1101231A1
公开(公告)日：2007-10-12
申请号：HK07108779
申请日：2007-08-13
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH M , LOMP GARY R , HAIM JOHN W
-
-
-
-
-
-
-
-
-
Search Results
330
records
(took 0.027 seconds)
