Patents by Inventor Robert Olesen
Robert Olesen 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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Publication number: 20070121939Abstract: In a communication system comprising a plurality of transmit/receive units (TRUs), a method for embedding a watermark into data includes modifying a carrier signal containing data to embed watermark information. The modified carrier signal is transmitted. A receiver receives the modified carrier signal and extracts the watermark information from the modified carrier signal.Type: ApplicationFiled: October 3, 2006Publication date: May 31, 2007Applicant: InterDigital Technology CorporationInventors: Robert Olesen, Prabhakar Chitrapu, John Kaewell,, Bing Chiang, Richard Herschaft, John Hoffmann, Sung-Hyuk Shin, Alexander Reznik
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Publication number: 20070053452Abstract: In a wireless communication system, a method and apparatus for noise estimation of a received OFDM communication signal, wherein the signal comprises a data frame with a preamble having at least one long training field (LTF) containing two substantially similar OFDM symbols, comprise examining the LTF for substantially similar OFDM symbols. The noise power in the signal is estimated and the received signal power is measured. The signal to noise ratio is calculated and the signal power is determined by subtracting the noise power from the signal noise.Type: ApplicationFiled: August 1, 2006Publication date: March 8, 2007Applicant: INTERDIGITAL TECHNOLOGY CORPORATIONInventors: Chang-Soo Koo, Peter Voltz, I-Tai Lu, Qingyuan Dai, Robert Olesen
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Publication number: 20070041460Abstract: A wireless communication apparatus which uses fast Fourier transforms (FFTs) in an orthogonal frequency division multiplexing (OFDM) receiver which incorporates a beam space antenna array. The beam space antenna array may be implemented with a Butler matrix array. The beam space antenna array may be a circular array, vertical array, or a combination of both circular and vertical arrays, for providing the desired angular antenna coverage. In one embodiment, the antenna array is optimized because the FFTs are linear invariant transform operators, whereby the order of operations in the OFDM receiver can be interchanged.Type: ApplicationFiled: October 25, 2006Publication date: February 22, 2007Applicant: InterDigital Technology CorporationInventors: Robert Olesen, Alexander Reznik, Philip Pietraski, Rui Yang
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Publication number: 20070036353Abstract: The present invention relates to secret key generation and authentication methods that are based on joint randomness not shared by others (JRNSO), in which unique channel response between two communication terminals generates a secret key. Multiple network access points use a unique physical location of a receiving station to increase user data security. High data rate communication data is encrypted by generating a random key and a pseudo-random bit stream. A configurable interleaving is achieved by introduction of JRNSO bits to an encoder used for error-correction codes. Databases of user data are also protected by JRNSO-based key mechanisms. Additional random qualities are induced on the joint channel using MIMO eigen-beamforming, antenna array deflection, polarization selection, pattern deformation, and path selection by beamforming or time correlation. Gesturing induces randomness according to uniquely random patterns of a human user's arm movements inflected to the user device.Type: ApplicationFiled: May 31, 2006Publication date: February 15, 2007Applicant: InterDigital Technology CorporationInventors: Alexander Reznik, Debashish Purkayastha, Steven Goldberg, Robert Olesen, Marian Rudolf, Inhyok Cha, Alan Carlton, Yogendra Shah, Shamim Rahman, Rajat Mukherjee, Robert DiFazio, Gregory Sternberg, Leonid Kazakevich, Kazimierz Siwiak, Guodong Zhang, Tanbir Haque, Louis Guccione, Prabhakar Chitrapu, Akinlolu Kumoluyi, Alain Briancon
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Publication number: 20070014376Abstract: The present invention is related to a method and system for optimization of channel estimation and synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) Multiple-Input Multiple-Output (MIMO) wireless communication system. In accordance with the present invention, all of the training sequences are simply constructed based on a basic code by cyclically shifting the basic code. The training sequences are transmitted from different antennas in parallel without performing inverse fast Fourier transform. As a result, there is no peak-to-average ratio problem. Channel estimation is performed in each receiver based on the samples before fast Fourier transform and the maximum-likelihood estimate of channel response in time domain is then mapped into the frequency domain. The channel estimation is not only very simple in implementation, but also very efficient in computation.Type: ApplicationFiled: September 20, 2006Publication date: January 18, 2007Applicant: InterDigital Technology CorporationInventors: Yuejin Huang, Robert Olesen, Chang-Soo Koo
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Publication number: 20060281422Abstract: The present invention is related to a method and system for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter for controlling the transmit power. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.Type: ApplicationFiled: June 14, 2005Publication date: December 14, 2006Applicant: InterDigital Technology CorporationInventors: Jung-Lin Pan, Robert Olesen, Yingming Tsai
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Publication number: 20060281421Abstract: The present invention is related to a method and apparatus for generating feedback information for transmit power control in a multiple-input multiple-output (MIMO) wireless communication system. Both a transmitter and a receiver comprise multiple antennae for transmission and reception. The transmitter comprises a power allocation unit for controlling transmit power based on a feedback received from the receiver. The receiver comprises a channel estimator and a singular value decomposition (SVD) unit. The channel estimator generates a channel matrix from a signal received from the transmitter and the SVD unit decomposes the channel matrix into D, U and V matrices. The receiver sends a feedback generated based on output from the SVD unit to the transmitter. The feedback may be one of an eigenvalue, a transmit power level or a power control bit or command. A hybrid scheme for selecting one of them based on channel condition may be implemented.Type: ApplicationFiled: June 14, 2005Publication date: December 14, 2006Applicant: InterDigital Technology CorporationInventors: Jung-Lin Pan, Robert Olesen, Yingming Tsai
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Publication number: 20060245513Abstract: A method and apparatus for decomposing a channel matrix in a wireless communication system are disclosed. A channel matrix H is generated for channels between transmit antennas and receive antennas. A Hermitian matrix A=HHH or A=HHH is created. A Jacobi process is cyclically performed on the matrix A to obtain Q and DA matrixes such that A=QDAQH. DA is a diagonal matrix obtained by singular value decomposition (SVD) on the A matrix. In each Jacobi transformation, real part diagonalization is performed to annihilate real parts of off-diagonal elements of the matrix and imaginary part diagonalization is performed to annihilate imaginary parts of off-diagonal elements of the matrix after the real part diagonalization. U, V and DH matrixes of H matrix are then calculated from the Q and DA matrices. DH is a diagonal matrix comprising singular values of the H matrix.Type: ApplicationFiled: March 29, 2006Publication date: November 2, 2006Applicant: InterDigital Technology CorporationInventors: Chang-Soo Koo, Robert Olesen
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Publication number: 20060133530Abstract: A method and apparatus for combining space-frequency block coding (SFBC), spatial multiplexing (SM) and beamforming in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system. The system includes a transmitter with a plurality of transmit antennas and a receiver with a plurality of receive antennas. The transmitter generates at least one data stream and a plurality of spatial streams. The number of generated spatial streams is based on the number of the transmit antennas and the number of the receive antennas. The transmitter determines a transmission scheme in accordance with at least one of SFBC, SM and beam forming. The transmitter transmits data in the data stream to the receiver based on the selected transmission scheme.Type: ApplicationFiled: October 20, 2005Publication date: June 22, 2006Applicant: InterDigital Technology CorporationInventors: Jaeyoung Kwak, Chang-Soo Koo, Robert Olesen, Aykut Bultan, Fatih Ozluturk
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Publication number: 20060072677Abstract: 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: August 11, 2005Publication date: April 6, 2006Applicant: InterDigital Technology CorporationInventors: Jaeyoung Kwak, Robert Olesen, Aykut Bultan, Eldad Zeira, Chang-Soo Koo, Fatih Ozluturk, Yuejin Huang, Kalpendu Pasad
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Publication number: 20060056529Abstract: The present invention is related to a method and system for optimization of channel estimation and synchronization in an Orthogonal Frequency Division Multiplexing (OFDM) Multiple-Input Multiple-Output (MIMO) wireless communication system. In accordance with the present invention, all of the training sequences are simply constructed based on a basic code by cyclically shifting the basic code. The training sequences are transmitted from different antennas in parallel without performing inverse fast Fourier transform. As a result, there is no peak-to-average ratio problem. Channel estimation is performed in each receiver based on the samples before fast Fourier transform and the maximum-likelihood estimate of channel response in time domain is then mapped into the frequency domain. The channel estimation is not only very simple in implementation, but also very efficient in computation.Type: ApplicationFiled: September 8, 2005Publication date: March 16, 2006Applicant: InterDigital Technology CorporationInventors: Yuejin Huang, Robert Olesen, Chang-Soo Koo
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Publication number: 20060034244Abstract: A method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system are disclosed. The entire sub-channels are divided into a plurality of groups. A channel quality indicator (CQI) is generated for each group based on channel quality status in each group, and communication parameters are adjusted in accordance with the CQI.Type: ApplicationFiled: May 6, 2005Publication date: February 16, 2006Applicant: InterDigital Technology CorporationInventors: Yuejin Huang, Chang-Soo Koo, Robert Olesen, Guodong Zhang, Yingming Tsai
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Publication number: 20060023745Abstract: A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are measured and compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent back to the transmitting transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained.Type: ApplicationFiled: April 29, 2005Publication date: February 2, 2006Applicant: InterDigital Technology CorporationInventors: Chang-Soo Koo, Robert Olesen
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Publication number: 20050220322Abstract: At least one At least one user data stream is layer 2/3 processed, physical layer processed and radio frequency processed. A watermark/signature is embedded at at least one of layer 2/3, physical layer or radio frequency, producing an embedded wireless communication. The embedded wireless communication is wirelessly transferred. The embedded wireless communication is received and the watermark/signature is extracted from the embedded wireless communication.Type: ApplicationFiled: January 11, 2005Publication date: October 6, 2005Applicant: InterDigital Technology CorporationInventors: Robert Olesen, Prabhakar Chitrapu, John Kaewell, Bing Chiang, Richard Herschaft, John Hoffmann, Sung-Hyuk Shin, Alexander Reznik
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Publication number: 20050195769Abstract: A spread spectrum method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless code division multiple access (CDMA) communication system, a base station, a wireless transmit/receive unit (WTRU), a transmitter, a receiver and/or an integrated circuit (IC). The wireless CDMA communication system includes a transmitter which steganographically embeds digital information in a CDMA communication signal and wirelessly transmits the CDMA communication signal. The system further includes a receiver which receives the CDMA communication signal and extracts the steganographically embedded digital information from the received CDMA communication signal.Type: ApplicationFiled: January 13, 2005Publication date: September 8, 2005Applicant: InterDigital Technology CorporationInventors: John Kaewell, Prabhakar Chitrapu, Robert Olesen, Sung-Hyuk Shin, John Hoffmann, Alexander Reznik
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Publication number: 20050180315Abstract: A method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless orthogonal frequency division multiplexing (OFDM) communication system, a base station, a wireless transmit/receive unit (WTRU), a transmitter, a receiver and/or an integrated circuit (IC). The wireless OFDM communication system includes a transmitter which steganographically embeds digital information in an OFDM communication signal and wirelessly transmits the OFDM communication signal. The system further includes a receiver which receives the OFDM communication signal and extracts the steganographically embedded digital information from the received OFDM communication signal.Type: ApplicationFiled: January 13, 2005Publication date: August 18, 2005Applicant: InterDigital Technology CorporationInventors: Prabhakar Chitrapu, John Kaewell, Robert Olesen, Sung-Hyuk Shin, John Hoffmann, Richard Herschaft
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Publication number: 20050154925Abstract: Tokens/keys are produced for wireless communications. These tokens/keys are used for watermarks, signature insertion, encryption and other uses. In one embodiment, contextual information is used to generate tokens/keys. The tokens/keys may be derived directly from the contextual information. The contextual information may be used in conjunction with other information to derive the tokens/keys. Tokens/keys may be exchanged between transmit/receive units. The exchange of these tokens/keys may be encrypted.Type: ApplicationFiled: November 23, 2004Publication date: July 14, 2005Applicant: InterDigital Technology CorporationInventors: Prabhakar Chitrapu, Alain Briancon, Akinlolu Kumoluyi, Alan Carlton, Kiran Vanganuru, Richard Herschaft, John Hoffmann, John Thommana, Debashish Purkayastha, Guodong Zhang, Robert Olesen, Alexander Reznik, TieJun Shan, Sung-Hyuk Shin, Amit Singhal
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Publication number: 20050129154Abstract: A wireless communication apparatus which uses fast Fourier transforms (FFTs) in an orthogonal frequency division multiplexing (OFDM) receiver which incorporates a beam space antenna array. The beam space antenna array may be implemented with a Butler matrix array. The beam space antenna array may be a circular array, vertical array, or a combination of both circular and vertical arrays, for providing the desired angular antenna coverage. In one embodiment, the antenna array is optimized because the FFTs are linear invariant transform operators, whereby the order of operations in the OFDM receiver can be interchanged.Type: ApplicationFiled: November 18, 2004Publication date: June 16, 2005Applicant: InterDigital Technology CorporationInventors: Robert Olesen, Alexander Reznik, Philip Pietraski, Rui Yang
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Publication number: 20050101353Abstract: A method and system is disclosed for enhancing reception of wireless communication signals. A beam pattern including at least one set of beams is generated. Where the beam pattern includes at least two sets of beams, the beam sets may be offset with respect to each other and alternated to enhance reception. Beams may be selected for data processing based on a signal-to-noise ratio (SNR) and may be maximal-ratio combined where signals from a single WTRU are detected within more than one beam and are used for data processing.Type: ApplicationFiled: September 23, 2004Publication date: May 12, 2005Applicant: InterDigital Technology CorporationInventors: Eldad Zeira, Donald Grieco, Robert Olesen, Ariela Zeira, Jung-Lin Pan, Aykut Bultan
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Publication number: 20050008103Abstract: A system, components and methods provide FEC decoding in a wireless communication system in which signal to noise ratio estimation is used for scaling information captured by a demodulator in processing received wireless communication signals. A preferred wireless transmit receive unit (WTRU) has a channel rate estimation device configured to process the received communication signals for the particular communication channel and to produce channel change rate estimates. A signal to noise ratio (SNR) estimation device of the WTRU is configured to produce SNR estimates based on observation windows of a calculated number of samples of the received signal where the number of samples used for each observation window is calculated a function of the channel change rate estimates produce by the channel rate estimation device.Type: ApplicationFiled: August 5, 2004Publication date: January 13, 2005Applicant: InterDigital Technology CorporationInventors: Gregory Sternberg, Rui Yang, Philip Pietraski, Robert Olesen