公开(公告)号：NO20063984A

公开(公告)日：2006-09-05

申请号：NO20063984

申请日：2006-09-05

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH

IPC: H04W64/00

CPC classification number: H04W64/00

公开(公告)号：SG121835A1

公开(公告)日：2006-05-26

申请号：SG200307099

申请日：2000-05-24

Applicant: INTERDIGITAL TECH CORP

Inventor： SEZGIN NADIR ,  OZLUTURK FATIH

IPC: H04B1/707 ,  H04B7/216 ,  H04B7/26 ,  H04J3/00 ,  H04J3/06 ,  H04J13/00 ,  H04L7/00 ,  H04W28/26 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

公开(公告)号：AT324712T

公开(公告)日：2006-05-15

申请号：AT04025423

申请日：2000-02-10

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH

IPC: H04B1/707 ,  H04J13/00 ,  H04J13/10

Abstract: The present invention provides a method for a communication system utilizing spreading code sequences, the system comprising: (a) a first generator which outputs a first repetitious code sequence at a first data rate; and (b) a second generator which outputs a second repetitious code sequence at a second data rate which is higher than the first data rate, wherein the first code sequence is truncated each time the second code sequence is repeated.

公开(公告)号：AU2003266491B2

公开(公告)日：2006-05-04

申请号：AU2003266491

申请日：2003-12-03

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH ,  SEZGIN NADIR

IPC: H04B7/26 ,  H04B1/707 ,  H04J3/00 ,  H04J3/06 ,  H04J13/00 ,  H04L7/00 ,  H04W28/26 ,  H04W56/00 ,  H04W74/04 ,  H04W88/08

公开(公告)号：DE60111885T2

公开(公告)日：2006-04-20

申请号：DE60111885

申请日：2001-03-27

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  OZLUTURK FATIH

IPC: H03G7/00 ,  H03G3/30

Abstract: A system for automatic gain control prevents input overload by precisely controlling the input level of a received, digitally modulated signal without using a variable gain amplifier. A limiting amplifier in conjunction with a logarithmic detector splits an input signal path in two, providing separate phase and amplitude information for downstream digital signal processing, where the separate phase and amplitude information is processed without variable gain artifacts. The separated phase information may further be divided into I and Q signals.

公开(公告)号：AU2005274106A1

公开(公告)日：2006-02-23

申请号：AU2005274106

申请日：2005-07-29

Applicant: INTERDIGITAL TECH CORP

Inventor： BULTAN AYKUT ,  OZLUTURK FATIH ,  PIETRASKI PHILIP J

IPC: H04L1/02 ,  H04J99/00 ,  H04W52/42

Abstract: A method and apparatus for radio resources control in a multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) communication system are disclosed. Radio resources are controlled by producing and applying a respective adaptive modulation and coding to each data stream. Applying a respective transmit power level to that data stream and mapping that data stream to a plurality of antennas. Each of the plurality of data streams are transmitted over different subcarriers, has a different adaptive modulation and coding (AM&C) and a different transmit power than others of the plurality of data streams.

公开(公告)号：CA2376321C

公开(公告)日：2006-01-24

申请号：CA2376321

申请日：1996-06-27

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

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 and a pre determined signal-to-noise value. A control signal generated from the respective forward chancel error signal is transmitted as part of a respective reverse channel information signal. A base unit includes AFPC receivers which receive respective reverse channel information signals and extract the forward 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 and a pre determined signal-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 level of the respective reverse spread-spectrum signal.

公开(公告)号：DK0986186T3

公开(公告)日：2006-01-09

申请号：DK99122088

申请日：1996-06-27

Applicant: INTERDIGITAL TECH CORP

Inventor： LOMP GARY ,  OZLUTURK FATIH ,  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：CA2570167A1

公开(公告)日：2005-12-29

申请号：CA2570167

申请日：2005-06-07

Applicant: INTERDIGITAL TECH CORP

Inventor： OZLUTURK FATIH

IPC: H04M1/00 ,  H01Q21/00 ,  H04B1/00 ,  H04B7/005 ,  H04B7/02 ,  H04B7/06 ,  H04L12/28 ,  H04L12/56 ,  H04L45/42

Abstract: A method and system for utilizing smart antenna in transmission of messages between nodes (102a-102n) are disclosed. A wireless communication system includes a plurality of nodes (102a-102n), and each node is capable of being connected to each other node. At least a portion of the nodes are provided with a smart antenna (204) configured to generate a plurality of directional beams (109a-109h). Each node maintains a list of other nodes and beam configuration information to be used in transmission of messages to other nodes. When a source node is required to transmit to a target node, the source node retrieves the beam configuration information and transmits with a directional beam (109) directed to the target node.

公开(公告)号：DK1143611T3

公开(公告)日：2005-11-14

申请号：DK01107436

申请日：2001-03-27

Applicant: INTERDIGITAL TECH CORP

Inventor： KAZAKEVICH LEONID ,  OZLUTURK FATIH

IPC: H03G3/30 ,  H03G7/00

Abstract: A system for automatic gain control prevents input overload by precisely controlling the input level of a received, digitally modulated signal without using a variable gain amplifier. A limiting amplifier in conjunction with a logarithmic detector splits an input signal path in two, providing separate phase and amplitude information for downstream digital signal processing, where the separate phase and amplitude information is processed without variable gain artifacts. The separated phase information may further be divided into I and Q signals.