Patents by Inventor Faith M. Ozluturk
Faith M. Ozluturk has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9564963Abstract: A receiver receives signals and noise over a frequency spectrum of a desired received signal. The desired received signal is spread using code division multiple access. The received signals and noise are demodulated to produce a demodulated signal. The demodulated signal is despread using a code uncorrelated with a code associated with the desired received signal. A power level of the despread demodulated signal is measured as an estimate of the noise level of the frequency spectrum.Type: GrantFiled: December 22, 2008Date of Patent: February 7, 2017Assignee: InterDigital Technology CorporationInventors: Gary R. Lomp, Faith M. Ozluturk, John Kowalski
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Publication number: 20150236815Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.Type: ApplicationFiled: April 24, 2015Publication date: August 20, 2015Applicant: INTERDIGITAL TECHNOLOGY CORPORATIONInventors: Jaeyoung Kwak, Robert L. Olesen, Aykut Bultan, Eldad M. Zeira, Changsoo Koo, Faith M. Ozluturk, Yuejin Huang, Kalpendu R. Pasad
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Patent number: 9019940Abstract: A method for using a wireless digital base station to receive, process and transmit a plurality of communications having independent data rates establishing a first communication channel having a first data communication rate to support a first communication; determining the data rate required to support the first communication; selecting one or more transmission channels, from a plurality of available transmission channels, required to support said required data rate; and transmitting the first communication using one or more selected transmission channels. The plurality of available transmission channels includes at least one B or D channel.Type: GrantFiled: November 22, 2013Date of Patent: April 28, 2015Assignee: InterDigital Technology CorporationInventor: Faith M. Ozluturk
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Patent number: 8787976Abstract: A method and system for utilizing smart antenna in transmission of messages between nodes are disclosed. A wireless communication system includes a plurality of nodes, 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 configured to generate a plurality of directional beams. 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 directed to the target node.Type: GrantFiled: January 25, 2013Date of Patent: July 22, 2014Assignee: InterDigital Technology CorporationInventor: Faith M. Ozluturk
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Patent number: 8369897Abstract: A method and system for utilizing smart antenna in transmission of messages between nodes are disclosed. A wireless communication system includes a plurality of nodes, 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 configured to generate a plurality of directional beams. 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 directed to the target node.Type: GrantFiled: August 18, 2009Date of Patent: February 5, 2013Assignee: Interdigital Technology CorporationInventor: Faith M Ozluturk
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Publication number: 20090303935Abstract: A method and system for utilizing smart antenna in transmission of messages between nodes are disclosed. A wireless communication system includes a plurality of nodes, 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 configured to generate a plurality of directional beams. 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 directed to the target node.Type: ApplicationFiled: August 18, 2009Publication date: December 10, 2009Applicant: INTERDIGITAL TECHNOLOGY CORPORATIONInventor: Faith M. Ozluturk
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Patent number: 6968202Abstract: A method for operating a user equipment employing a CDMA technique comprises combining a plurality of spread spectrum data signals into a combined signal having a fluctuating power level corresponding to the data signals; modulating the combined signal to produce an RF signal; measuring average power of the combined signal over a selected time period; adaptively limiting the combined signal power to a calculated level based at least in part on the measured power; and transmitting the RF signal.Type: GrantFiled: March 4, 2002Date of Patent: November 22, 2005Assignee: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Brian Kiernan
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Patent number: 6944209Abstract: The present invention is a user equipment (UE), including a receiver and method for receiving one of a plurality of channels in a communication signal. An adaptive matched filter produces a filtered signal by using a weighting signal. A rake receiver produces a filter weighting signal using a pseudo-noise signal generator. A channel despreader despreads the filtered signal using the pseudo-noise signal generated to produce a despread channel signal of the selected channel. A pilot channel despreader despreads the filtered signal using a pseudo-noise signal generator to produce a despread pilot signal of the pilot channel. A hard decision processor receives the despread channel signal of the selected channel and produces a correction signal. A phase-locked loop utilizes at least the despread pilot signal and produces a phase correction signal which is applied to produce phase-corrected channel signals.Type: GrantFiled: January 26, 2004Date of Patent: September 13, 2005Assignee: InterDigital Technology CorporationInventors: Faith M. Özlütürk, David K. Mesecher, Alexander M. Jacques
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Patent number: 6940840Abstract: A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power.Type: GrantFiled: February 21, 2001Date of Patent: September 6, 2005Assignee: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Gary R. Lomp, John Kowalski
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Patent number: 6904292Abstract: A base station for transmitting signals employing a CDMA technique where a plurality of spread spectrum data signals are combined. A characteristic of the output of the combining for a given time period is measured. An output of the combining is adaptively linked responsive, at least partially, to an output of the measuring.Type: GrantFiled: March 4, 2002Date of Patent: June 7, 2005Assignee: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Brian Kiernan
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Patent number: 6798759Abstract: A method for using a wireless digital base station to receive, process and transmit a plurality of communications having independent data rates establishing a first communication channel having a first data communication rate to support a first communication; determining the data rate required to support the first communication; selecting one or more transmission channels, from a plurality of available transmission channels, required to support said required data rate; and transmitting the first communication using one or more selected transmission channels. The plurality of available transmission channels includes at least one B or D channel.Type: GrantFiled: February 22, 2002Date of Patent: September 28, 2004Assignee: InterDigital Technology CorporationInventor: Faith M. Ozluturk
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Patent number: 6788662Abstract: A code-division-multiple-access (CDMA) system employing spread-spectrum modulation. The CDMA system has a base station (BS), and a plurality of subscriber units. The signals transmitted between the base station and subscriber unit use spread-spectrum modulation. The improvement method for adaptive reverse power control (APC) from a subscriber unit (SU) to a base station (BS), comprises the steps of sending from the subscriber unit, using spread-spectrum modulation, a SU-spreading code on a reverse channel. The base station despreads the SU-spreading code on the reverse channel as a despread signal, determines a first power level Pd which includes power of the despread signal plus noise and a second power level PN, which includes despread-noise power.Type: GrantFiled: February 21, 2001Date of Patent: September 7, 2004Assignee: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Gary R. Lomp, John Kowalski
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Patent number: 6760365Abstract: A User Equipment (UE) has a circuit that performs the acquisition for the low chip rate option of the Universal Mobile Telecommunication System (UMTS) Time Division Duplex (TDD) standard as formulated by the Third Generation Partnership Project (3GPP). The present invention implements the detection of the basic SYNC code; the determination of the midamble used and the detection of the superframe timing based on SYNC code modulation sequence. This enables reading of a full Broadcast Channel (BCH) message.Type: GrantFiled: October 9, 2002Date of Patent: July 6, 2004Assignee: InterDigital Technology CorporationInventors: Alpaslan Demir, Faith M. Ozluturk
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Publication number: 20040120282Abstract: A mobile user receiver having a cancellation system for removing selected signals from a traffic signal prior to decoding includes a receiver having a system input for receiving communication signals from a transmitter over an air interface. The system input is supplied to a traffic signal cancellation system for canceling unwanted traffic signals. The system input is also supplied to a pilot signal cancellation system for removing a global pilot signal. The output of the pilot signal cancellation system is subtracted from the output of the traffic signal cancellation system to provide a cancellation system output free from unwanted traffic signals and the global pilot signal.Type: ApplicationFiled: June 16, 2003Publication date: June 24, 2004Applicant: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Nadir Sezgin
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Patent number: 6741584Abstract: A method is disclosed for receiving a transmitted signal in a communication system employing CDMA techniques wherein the transmitted signal includes a plurality of short codes, each of which is transmitted repetitively over a fixed period of time and where the received signal has CW interference in addition to the transmitted signal. The method includes using a Sequential Ratio Probability Test (SPRT) for detecting the presence of the short code in a plurality of time phases of the received signal by calculating a likelihood ratio for each phase. A likelihood ratio is a comparison of the signal's Probability Distribution Function (PDF) with a background noise PDF. The background noise PDF is calculated by combining in the RAKE the current short code with the input signal.Type: GrantFiled: July 1, 2002Date of Patent: May 25, 2004Assignee: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Alexander M. Jacques
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Patent number: 6728292Abstract: A spread spectrum time division duplex user equipment uses frames having time slots for communication. The user equipment receives power commands and a first communication having a transmission power level in a first time slot. A power level of the first communication is measured as received. A pathloss estimate is determined based on in part the measured received first communication power level and the first communication transmission power level. A transmission power level for the second communication in a second time slot form the user equipment is set based on in part the pathloss estimate weighted by a quality factor adjusted by the power command. The quality factor decreases as a number of time slots between the first and second time slots increases.Type: GrantFiled: June 11, 2003Date of Patent: April 27, 2004Assignee: InterDigital Technology CorporationInventors: Ariela Zeira, Faith M. Ozluturk, Sung-Hyuk Shin
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Publication number: 20020131481Abstract: A receiver including an apparatus for generating complex four-phase pseudo-random code sequences which may be directly mapped to a quadrature phase shift keying (QPSK) signal constellation. The apparatus includes a shift register coupled to an accumulator, which combines the output of the shift register with a predefined value and inputs the result back into the accumulator. Certain bits are extracted form the shift register and are used to generate the code sequences.Type: ApplicationFiled: February 4, 2002Publication date: September 19, 2002Applicant: InterDigital Technology CorporationInventor: Faith M. Ozluturk
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Patent number: 6414951Abstract: A method is disclosed for receiving a transmitted signal in a communication system employing CDMA techniques wherein the transmitted signal includes a plurality of short codes, each of which is transmitted repetitively over a fixed period of time and where the received signal has CW interference in addition to the transmitted signal. The method includes using a Sequential Ratio Probability Test (SPRT) for detecting the presence of the short code in a plurality of time phases of the received signal by calculating a likelihood ratio for each phase. A likelihood ratio is a comparison of the signal's Probability Distribution Function (PDF) with a background noise PDF. The background noise PDF is calculated by combining in the RAKE the current short code with the input signal.Type: GrantFiled: October 8, 1999Date of Patent: July 2, 2002Assignee: InterDigital Technology CorporationInventors: Faith M. Ozluturk, Alexander M. Jacques
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Patent number: 6122511Abstract: A multicellular communications system where transmission between a roving subscriber and multiple base station transceivers is maintained throughout the territory. Each mobile subscriber unit has global code seeds for the entire communications system or an updated neighbor list and continuously searches to access available cell base stations while maintaining a communication link with one base station. Candidate cell base stations are interrogated and communicated with. The candidate base station that requires less transmitting energy from the mobile subscriber unit is closely monitored. When the mobile subscriber unit can successfully communicate with less transmit power than currently required by the present base station, the mobile subscriber unit is handed off to the candidate base station transceiver.Type: GrantFiled: June 29, 1999Date of Patent: September 19, 2000Assignee: InterDigital Technology CorporationInventor: Faith M. Ozluturk
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Patent number: 5842114Abstract: A system which dynamically adjusts the power of signals transmitted from a wireless base station over global channels to minimize spillover to other communication cells monitors the total transmit power of the base station and dynamically adjusts the global channel transmit power as a function of the total transmit power of the base station as measured at the base station.Type: GrantFiled: February 12, 1997Date of Patent: November 24, 1998Assignee: InterDigital Technology CorporationInventor: Faith M. Ozluturk