公开(公告)号：DK0903016T3

公开(公告)日：2005-01-10

申请号：DK98912922

申请日：1998-03-10

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  LOMP GARY ,  KOWALSKI JOHN ,  JACQUES ALEXANDER

IPC: H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/7115 ,  H04B1/712 ,  H04B1/7183 ,  H04B7/005 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H04L1/00 ,  H04L25/02 ,  H04L27/00 ,  H04L27/20 ,  H04L27/233 ,  H04W52/00 ,  H04W52/02 ,  H04W52/04 ,  H04W52/08 ,  H04W52/36 ,  H04W52/50 ,  H04W88/02 ,  H04W88/18

Abstract: A subscriber unit comprising controller means (2330) for storing a program received by the subscriber unit in first memory means (2332) and for determining whether the program was received correctly; the controller means (2330), on a condition that the program was received correctly, storing the program in a second memory means (2332); and the controller means (2330) rebooting the subscriber unit and loading the program.

公开(公告)号：DE02005245T1

公开(公告)日：2004-04-15

申请号：DE02005245

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY R ,  KOWALSKI JOHN ,  OZLUTURK FATIH M ,  SILVERBERG AVI ,  REGIS ROBERT T ,  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 ,  H04Q7/36

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：ES2137140T3

公开(公告)日：2003-05-16

申请号：ES95927544

申请日：1995-07-05

Applicant: INTERDIGITAL TECH CORP

Inventor： SCHILLING DONALD L ,  KOWALSKI JOHN ,  MOSHAVI SHIMON

IPC: H04B1/10 ,  H04B1/12 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7107 ,  H04B7/216 ,  H04L7/00 ,  H04J13/02

公开(公告)号：DE69528275T2

公开(公告)日：2003-05-08

申请号：DE69528275

申请日：1995-07-05

Applicant: INTERDIGITAL TECH CORP

Inventor： SCHILLING L ,  KOWALSKI JOHN ,  MOSHAVI SHIMON

IPC: H04B1/10 ,  H04B1/12 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7107 ,  H04B7/216 ,  H04L7/00 ,  H04J13/02

公开(公告)号：DK0772928T3

公开(公告)日：2003-01-13

申请号：DK95927544

申请日：1995-07-05

Applicant: INTERDIGITAL TECH CORP

Inventor： DONALD L SCHILLING ,  KOWALSKI JOHN ,  MOSHAVI SHIMON

IPC: H04B1/10 ,  H04B1/12 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7107 ,  H04B7/216 ,  H04L7/00 ,  H04J13/02

公开(公告)号：CA2224706C

公开(公告)日：2002-10-01

申请号：CA2224706

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  KOWALSKI JOHN ,  LOMP GARY

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 ,  H04J13/02 ,  H04Q7/22 ,  H04Q7/38

Abstract: An automatic power control (APC) system for a spread-spectrum communications system includes an automatic forward power control (AFPC) system, and an automatic reverse power control (ARPC) system. In the AFPC, each subscriber unit (SU) measures a forward signal-to-noise ratio of a respective forward channel information signal to generate a respective forward channel error signal which includes a measure of the uncorrelated noise in the channel and a measure of the error between the respective forward signal-to-noise ration a nd a pre determined signal-to-noise value. A control signal generated from the respective forward channel error signal is transmitted as part of a respecti ve reverse channel information signal. A base unit includes AFPC receivers whic h receive respective reverse channel information signals and extract the forwa rd channel error signals therefrom to adjust the power levels of the respective forward spread-spectrum signals. In the ARPC system, each base measures a reverse signal-to-noise ratio of each of the respective reverse channel information signals and generates a respective reverse channel error signal which includes a measure of the uncorrelated noise in the channel and a measure of the error between the respective reverse signal-to-noise ratio an d a pre determinedsignal-to-noise value. The base unit transmits a control signal generated from the respective reverse channel error signal as a part of a respective forward channel information signal. Each SU includes an ARPC receiver which receives the forward channel information signal and extracts the respective reverse error signal to adjust the reverse transmit power lev el of the respective reverse spread-spectrum signal.

公开(公告)号：CA2342454C

公开(公告)日：2002-09-03

申请号：CA2342454

申请日：1995-07-05

Applicant: INTERDIGITAL TECH CORP

Inventor： KOWALSKI JOHN ,  SCHILLING DONALD L ,  MOSHAVI SHIMON

IPC: H04B1/10 ,  H04B1/12 ,  H04B1/707 ,  H04B1/709 ,  H04B1/7093 ,  H04B1/7107 ,  H04B7/216 ,  H04L7/00 ,  H04B1/69

Abstract: A spread-spectrum CDMA interference canceler for reducing interference in a DS/CDMA receiver having N chip-code channels. The interference canceler includes a plurality of correlators, a plurality of spread-spectrum-processi ng circuits, subtracting circuits, and channel correlators. Using a plurality o f chip- code signals generated from chip codeword signal generators, the correlators despreads the spread-spectrum CDMA signal as a plurality of despread signals . The plurality of spread-spectrum-processing circuits uses a timed version of the plurality of chip-code signals generated from the delay devices, for spread- spectrum processing the plurality of despread signals. For recovering a code channel using an i th chip-code-signal, the subtracting circuits subtracts from the spread-spectrum CDMA signal, each of the N-1 spread-spectrum-processed- despread signals thereby generating a subtracted signal. The channel- correlator despreads the subtracted signal.

公开(公告)号：ES2147548T1

公开(公告)日：2000-09-16

申请号：ES99126233

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH M ,  KOWALSKI JOHN

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：DE835593T1

公开(公告)日：2000-05-04

申请号：DE96923527

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN ,  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

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：HK1015983A1

公开(公告)日：1999-10-22

申请号：HK99100840

申请日：1999-03-02

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  KOWALSKI JOHN

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.