公开(公告)号：DE986187T1

公开(公告)日：2000-11-09

申请号：DE99122097

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FAITH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24

Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.

公开(公告)号：AU2008229751A1

公开(公告)日：2008-10-30

申请号：AU2008229751

申请日：2008-10-02

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FAITH

IPC: H04M11/00 ,  H04W36/00 ,  H04W36/14 ,  H04W88/06

公开(公告)号：AU2006203266A1

公开(公告)日：2006-08-24

申请号：AU2006203266

申请日：2006-07-31

Applicant: INTERDIGITAL TECH CORP

Inventor： SEZGIN NADIR ,  OZLUTURK FAITH

IPC: H04B7/26

公开(公告)号：NO20052886L

公开(公告)日：2005-08-08

申请号：NO20052886

申请日：2005-06-14

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  DEMIR ALPASLAN ,  OZLUTURK FAITH

IPC: H04B7/005 ,  H04B7/08 ,  H04B1/38

Abstract: A wireless transmit/receive unit (WTRU) has multiple receivers with an interface to combine received signals to provide enhanced reception. A control unit selectively controls the powering of the receivers to limit power consumption based on selected parameters.

公开(公告)号：HK1026534A1

公开(公告)日：2000-12-15

申请号：HK00105700

申请日：2000-09-09

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FAITH ,  SILVERBERG AVI

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04B

Abstract: The invention provides a spread spectrum communication system for maintaining an initial transmit power level of a communication station during periods of inactivity. The system comprises a first station (501) and a second station (502), the initial transmit power level of which is maintained, wherein the first station generates an automatic power control signal by comparing a measured noise power level in a communication channel and an estimated system transmit power level and the second station occasionally transmits a spread spectrum signal whilst in an inactive state and receives the automatic power control signal to adjust an initial transmit power level thereof.

公开(公告)号：AP682A

公开(公告)日：1998-09-14

申请号：AP9801214

申请日：1996-07-01

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  KOWALSKI JOHN ,  OZLUTURK FAITH ,  VERBERG AVIL SIL ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JAQUES ALEXANDER

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04Q7/30 ,  H04

Abstract: A multiple access, sprea-spectrum communication sysyem processes a plurality of information signals received by a radio carrier station (rcs)over telecommunication lines for simultaneous transmission over a radio frequency (rf)channel as a code-division-nultiplexed (cdm)signal to a group of subscriber units (sus0. The rcs receives a call request signal that corresponds to a telecommunication line information signal, and a user indentification signal that indentifies a suer to receive the call. The rcs includes a plurality of code division multiple access (cdma)modems, one of which provides message code signals synchronize to the global pilot signal. Each modem on information signal with a message signal to provide a cdm processed signal. The rcs includes a system channel controller coupled to receive a remote cal. An rf transmitter is connected to all of the modems to combine the cdm processed signals with the global pilot code signal to generate a cdm signal. The transmitter also modulates a carrier signal with the cdm signal and transmitts the modulated carriersignal through an rf communication channel to the us's. Each su includes a cdm mdem which is also synchronized to the global pilot signal. Te cdm modem despreads the cdma signal and provides a despreads information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the rcs and the su

公开(公告)号：AP681A

公开(公告)日：1998-09-14

申请号：AP9600832

申请日：1996-07-01

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  KOWALSKI JOHN ,  OZLUTURK FAITH ,  SILVERBERG AVI ,  REGIS ROBERT ,  LUDDY MICHAEL ,  MARRA ALEXANDER ,  JACQUES ALEXANDER

IPC: H03K3/84 ,  G06F13/374 ,  H03H17/02 ,  H03H17/06 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/711 ,  H04B1/7115 ,  H04B1/712 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04B15/00 ,  H04B17/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04J13/12 ,  H04J13/16 ,  H04K1/00 ,  H04L1/00 ,  H04L5/14 ,  H04L7/00 ,  H04L7/033 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04L27/30 ,  H04N1/333 ,  H04W52/04 ,  H04W52/14 ,  H04W52/24 ,  H04Q7/30 ,  H04J13/04

Abstract: A multiple acces, spread-spectrum communiction system processes a plurality of information signals received by a radio carrier station (rcs)over telecommunication lines for simultaneous transmission over a radio frequency (rf)channel as a code-division-multiplexed (cdm)signal to a group of subscriber units (sus). The rcs receives a call request signal that corresponds to a telecommunication line information signal, and a user indentification signal that idenifies a user to receive the call. The rcs includes a plurality of code division multiple access (cdma)modems, one of which provides a global pilot code signal. The modems provide message code signals synhronized to the global pilot signal. Each modem combines an information signal with a message signal to provide a cdm processed signal. The rcs includes a system channel controller coupled to receive a remote call. An rf transmitter is connected to all of the modems to combine the cdm processed signals with the global pilot code signal to generate a cdm signal. The rf transmitter also modulates a carrier signal with the cdm signal and transmits the modulated carrier signal through an rf communication channel to the uss. Each su includes a cdma modem which is also synchronized to the global pilot signal. The cdma modem despreads the cdm signal and provides a despread information signal to the user. The system includes a closed loop power control system for maintaining a minimum system transmit power level for the rcs and the sus, and system capacity management for maintaining a maximum number of active sus for improved system perfomance.