Patents by Inventor H. Vincent Poor
H. Vincent Poor 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: 10055739Abstract: A system and method for pricing and exchanging content is provided, which includes a data plane formed by a peer-to-peer content sharing network or a central server allowing for client-server content transfers, and a control plane formed by a central server in communication with the data plane via the Internet. The data plane allows for the storage of digital content provided by users and the transfer of content therebetween, and the control plane provides a virtual market in which such content is sold between users using virtual currency that can be exchanged for real currency.Type: GrantFiled: October 6, 2008Date of Patent: August 21, 2018Assignee: The Trustees of Princeton UniversityInventors: Mung Chiang, Hazer Inaltekin, H. Vincent Poor
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Patent number: 9166856Abstract: A system and method for initial ranging in wireless communication systems is provided. A plurality of orthogonal frequency division multiplexing (OFDM) blocks are received by an OFDMA base station transceiver from a plurality of remote user devices in wireless communication with the base station. A ranging subchannel is extracted from the OFDM blocks. The number of active codes in the ranging subchannel is determined, active codes are identified, and carrier frequency offsets (CFOs) are estimated for each active code. Timing delays and power levels for each active code are then estimated. The estimated CFOs, timing delays, and power levels are broadcasted by the base station to the remote user devices, so that the user devices can utilize same to adjust transmission parameters to optimize power levels and synchronize communication with the base station.Type: GrantFiled: August 28, 2012Date of Patent: October 20, 2015Assignee: The Trustees of Princeton UniversityInventors: Michele Morelli, H. Vincent Poor, Luca Sanguinetti
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Patent number: 9042367Abstract: A system and method for synchronizing the phases and frequencies of devices in multi-user, wireless communications systems are provided. A primary beacon signal is transmitted by a destination node in a wireless communications network to a plurality of source nodes. Secondary beacon signals are also exchanged between the source nodes. Using the primary and secondary beacon signals, the nodes generate local phase and frequency estimates which are used to control local phases and frequencies of the source nodes. The source nodes then transmit common information to the destination at carrier frequencies based on the estimated local frequencies and phases, so that the phases and frequencies of the transmitted information are synchronized to facilitate coherent combining of the bandpass signals at the destination. Phase and frequency synchronization can be applied to wireless communications systems having any number of source nodes, and effects of Doppler shifts and moving platforms are accounted for.Type: GrantFiled: January 21, 2014Date of Patent: May 26, 2015Assignees: The Trustees of Princeton University, Worcester Polytechnic InstituteInventors: Donald Richard Brown, H. Vincent Poor, Boyang Zhang
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Publication number: 20140133479Abstract: A system and method for synchronizing the phases and frequencies of devices in multi-user, wireless communications systems are provided. A primary beacon signal is transmitted by a destination node in a wireless communications network to a plurality of source nodes. Secondary beacon signals are also exchanged between the source nodes. Using the primary and secondary beacon signals, the nodes generate local phase and frequency estimates which are used to control local phases and frequencies of the source nodes. The source nodes then transmit common information to the destination at carrier frequencies based on the estimated local frequencies and phases, so that the phases and frequencies of the transmitted information are synchronized to facilitate coherent combining of the bandpass signals at the destination. Phase and frequency synchronization can be applied to wireless communications systems having any number of source nodes, and effects of Doppler shifts and moving platforms are accounted for.Type: ApplicationFiled: January 21, 2014Publication date: May 15, 2014Applicants: Worcester Polytechnic Institute, The Trustees of Princeton UniversityInventors: Donald Richard Brown, H. Vincent Poor, Boyang Zhang
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Patent number: 8634405Abstract: A system and method for synchronizing the phases and frequencies of devices in multi-user, wireless communications systems are provided. A primary beacon signal is transmitted by a destination node in a wireless communications network to a plurality of source nodes. Secondary beacon signals are also exchanged between the source nodes. Using the primary and secondary beacon signals, the nodes generate local phase and frequency estimates which are used to control local phases and frequencies of the source nodes. The source nodes then transmit common information to the destination at carrier frequencies based on the estimated local frequencies and phases, so that the phases and frequencies of the transmitted information are synchronized to facilitate coherent combining of the bandpass signals at the destination. Phase and frequency synchronization can be applied to wireless communications systems having any number of source nodes, and effects of Doppler shifts and moving platforms are accounted for.Type: GrantFiled: September 8, 2009Date of Patent: January 21, 2014Assignees: The Trustees of Princeton University, Worcester Polytechnic InstituteInventors: Donald Richard Brown, H. Vincent Poor, Boyang Zhang
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Publication number: 20120320730Abstract: A system and method for initial ranging in wireless communication systems is provided. A plurality of orthogonal frequency division multiplexing (OFDM) blocks are received by an OFDMA base station transceiver from a plurality of remote user devices in wireless communication with the base station. A ranging subchannel is extracted from the OFDM blocks. The number of active codes in the ranging subchannel is determined, active codes are identified, and carrier frequency offsets (CFOs) are estimated for each active code. Timing delays and power levels for each active code are then estimated. The estimated CFOs, timing delays, and power levels are broadcasted by the base station to the remote user devices, so that the user devices can utilize same to adjust transmission parameters to optimize power levels and synchronize communication with the base station.Type: ApplicationFiled: August 28, 2012Publication date: December 20, 2012Inventors: Michele Morelli, H. Vincent Poor, Luca Sanguinetti
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Patent number: 8254242Abstract: A system and method for initial ranging in wireless communication systems is provided. A plurality of orthogonal frequency division multiplexing (OFDM) blocks are received by an OFDMA base station transceiver from a plurality of remote user devices in wireless communication with the base station. A ranging subchannel is extracted from the OFDM blocks. The number of active codes in the ranging subchannel is determined, active codes are identified, and carrier frequency offsets (CFOs) are estimated for each active code. Timing delays and power levels for each active code are then estimated. The estimated CFOs, timing delays, and power levels are broadcasted by the base station to the remote user devices, so that the user devices can utilize same to adjust transmission parameters to optimize power levels and synchronize communication with the base station.Type: GrantFiled: May 2, 2008Date of Patent: August 28, 2012Assignee: Princeton UniversityInventors: Michele Morelli, H. Vincent Poor, Luca Sanguinetti
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Publication number: 20110238505Abstract: A system and method for pricing and exchanging content is provided, which includes a data plane formed by a peer-to-peer content sharing network or a central server allowing for client-server content transfers, and a control plane formed by a central server in communication with the data plane via the Internet. The data plane allows for the storage of digital content provided by users and the transfer of content therebetween, and the control plane provides a virtual market in which such content is sold between users using virtual currency that can be exchanged for real currency.Type: ApplicationFiled: October 6, 2008Publication date: September 29, 2011Inventors: Mung Chiang, Hazer Inaltekin, H. Vincent Poor
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Patent number: 7929937Abstract: A system and method for blind estimation of carrier frequency offsets (CFOs) and separation of user signals in wireless communications systems are provided. Blind estimation of CFOs (i.e., without knowledge of the conditions of the transmitter or the transmission medium/channel) is carried out in order to improve reception quality by a wireless communications device. A received RF signal is over-sampled by a pre-defined over-sampling factor, and polyphase components are extracted from the over-sampled signal. The polyphase components are used to construct a virtual receiver output matrix, e.g., a model of the received signal and its associated output matrix. System response conditions are blindly estimated by applying a blind system estimation algorithm to the virtual receiver output matrix.Type: GrantFiled: October 24, 2007Date of Patent: April 19, 2011Assignee: The Trustees of Princeton UniversityInventors: Visa Koivunen, Athina Petropulu, H. Vincent Poor, Yuanning Yu
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Publication number: 20100103917Abstract: A system and method for synchronizing the phases and frequencies of devices in multi-user, wireless communications systems are provided. A primary beacon signal is transmitted by a destination node in a wireless communications network to a plurality of source nodes. Secondary beacon signals are also exchanged between the source nodes. Using the primary and secondary beacon signals, the nodes generate local phase and frequency estimates which are used to control local phases and frequencies of the source nodes. The source nodes then transmit common information to the destination at carrier frequencies based on the estimated local frequencies and phases, so that the phases and frequencies of the transmitted information are synchronized to facilitate coherent combining of the bandpass signals at the destination. Phase and frequency synchronization can be applied to wireless communications systems having any number of source nodes, and effects of Doppler shifts and moving platforms are accounted for.Type: ApplicationFiled: September 8, 2009Publication date: April 29, 2010Inventors: Donald Richard Brown, H. Vincent Poor, Boyang Zhang
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Publication number: 20090274222Abstract: A system and method for initial ranging in wireless communication systems is provided. A plurality of orthogonal frequency division multiplexing (OFDM) blocks are received by an OFDMA base station transceiver from a plurality of remote user devices in wireless communication with the base station. A ranging subchannel is extracted from the OFDM blocks. The number of active codes in the ranging subchannel is determined, active codes are identified, and carrier frequency offsets (CFOs) are estimated for each active code. Timing delays and power levels for each active code are then estimated. The estimated CFOs, timing delays, and power levels are broadcasted by the base station to the remote user devices, so that the user devices can utilize same to adjust transmission parameters to optimize power levels and synchronize communication with the base station.Type: ApplicationFiled: May 2, 2008Publication date: November 5, 2009Inventors: Michele Morelli, H. Vincent Poor, Luca Sanguinetti
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Publication number: 20090111411Abstract: A system and method for blind estimation of carrier frequency offsets (CFOs) and separation of user signals in wireless communications systems are provided. Blind estimation of CFOs (i.e., without knowledge of the conditions of the transmitter or the transmission medium/channel) is carried out in order to improve reception quality by a wireless communications device. A received RF signal is over-sampled by a pre-defined over-sampling factor, and polyphase components are extracted from the over-sampled signal. The polyphase components are used to construct a virtual receiver output matrix, e.g., a model of the received signal and its associated output matrix. System response conditions are blindly estimated by applying a blind system estimation algorithm to the virtual receiver output matrix.Type: ApplicationFiled: October 24, 2007Publication date: April 30, 2009Applicant: The Trustees of Princeton UniversityInventors: Visa Koivunen, Athina Petropulu, H. Vincent Poor, Yuanning Yu
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Patent number: 7349458Abstract: In a time-hopped impulse radio system, each symbol is transmitted over a channel having different multipath components as a set of Nf frames. Each frame includes one pulse. All frames of a received signal corresponding to the symbol are sampled to generate Nf×L samples, where L is the number of samples for each frame. Then, the Nf×L samples are combined according to a minimum mean square error criterion to obtain a decision variable corresponding to the symbol.Type: GrantFiled: May 17, 2004Date of Patent: March 25, 2008Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Sinan Gezici, Andreas F. Molisch, Hisashi Kobayashi, H. Vincent Poor
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Patent number: 7292619Abstract: A method and system acquire a received impulse radio signal by first searching, with respect to time, a region of the impulse radio signal using a first template signal to locate a block including a signal cell, and second searching, with respect to time, the block using a second template signal to locate the signal cell to acquire the received impulse radio signal.Type: GrantFiled: April 30, 2003Date of Patent: November 6, 2007Assignee: Mitsubishi Electric Research LaboratoriesInventors: Andreas Molisch, Sinan Gezici, Hisashi Kobayashi, H. Vincent Poor
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Patent number: 7164720Abstract: A method and system acquire a received impulse radio signal by correlating a region, including a plurality of cells, of the received impulse radio signal using multiple time-shifted template signals, each template signal having a different delay to obtain a correlation value for each template signal. The correlation values are averages, and a particular delay associated with a particular template signal having a substantial increase in successive averages to locate a signal cell in the region.Type: GrantFiled: April 30, 2003Date of Patent: January 16, 2007Assignee: Mitsubishi Electric Research Laboratories, Inc.Inventors: Andreas Molisch, Sinan Gezici, Hisashi Kobayashi, H. Vincent Poor
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Patent number: 7095987Abstract: A first downlink transmission beam and a second downlink transmission beam is determined based on a received user-derived signal. The first downlink transmission beam is substantially uncorrelated with the second downlink transmission beam. The first downlink transmission beam is associated with a portion within a first sector. The second downlink transmission beam is associated with a portion within a second sector. A first signal is diversity encoded to produce a first diversity-encoded signal. A second signal is diversity encoded to produce a second diversity-encoded signal. The first diversity-encoded signal is sent over the first downlink transmission beam. The second diversity-encoded signal is sent over the second downlink transmission beam.Type: GrantFiled: November 15, 2001Date of Patent: August 22, 2006Assignee: Texas Instruments IncorporatedInventors: Louis R Brothers, Jr., John Cangeme, Alexander Flaig, Samuel J MacMullan, H. Vincent Poor, Tandhoni S Rao, Stuart C Schwartz, Triveni N Upadhyay
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Patent number: 6968022Abstract: The invention is a switched beam beamforming method and apparatus for wireless communication receiving stations utilizing an array of antenna elements in which only a single beam is generated at any given instant and the beam is switched at a very high rate, e.g., faster than the data rate of the system. An algorithm for scheduling the beamforming sequence is disclosed that optimizes performance by optimizing the signal/interference-plus-noise ratio for a given set of conditions at any instant in time. In particular, spatial diversity offered by antenna arrays for direct sequence-code division multiple access communication systems is exploited by an intelligent switched beam antenna at radio frequency level. The design is optimized to yield conditional mean estimates of the communication channel during uplink transmission and compute minimum variance estimates of the communication channel by optimally combining the signals of the spatially distributed antennas at chip rate.Type: GrantFiled: September 22, 2000Date of Patent: November 22, 2005Assignee: Princeton UniversityInventors: H. Vincent Poor, Andrew Logothetis
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Patent number: 6930637Abstract: Method and apparatus for high resolution tracking via mono-pulse beam-forming in a communication system in which the capacity and range of mobile or fixed wireless communication base stations are improved by implementing a single or multiple antenna beam per signal path. Adaptive beam-forming based on up-link direction-of arrival estimation can be performed without using the above-mentioned computationally intensive techniques.Type: GrantFiled: November 13, 2002Date of Patent: August 16, 2005Assignee: Texas Instruments IncorporatedInventors: Louis R. Brothers, Jr., John Cangeme, Alexander Flaig, Samuel J. MacMullen, H. Vincent Poor, Tandhoni S. Rao, Stuart C. Schwartz, Triveni N. Upadhyay
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Publication number: 20040176119Abstract: A method and system acquire a received impulse radio signal by correlating a region, including a plurality of cells, of the received impulse radio signal using multiple time-shifted template signals, each template signal having a different delay to obtain a correlation value for each template signal. The correlation values are averages, and a particular delay associated with a particular template signal having a substantial increase in successive averages to locate a signal cell in the region.Type: ApplicationFiled: April 30, 2003Publication date: September 9, 2004Inventors: Andreas Molisch, Sinan Gezici, Hisashi Kobayashi, H. Vincent Poor
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Publication number: 20040176120Abstract: A method and system acquire a received impulse radio signal by first searching, with respect to time, a region of the impulse radio signal using a first template signal to locate a block including a signal cell, and second searching, with respect to time, the block using a second template signal to locate the signal cell to acquire the received impulse radio signal.Type: ApplicationFiled: April 30, 2003Publication date: September 9, 2004Inventors: Andreas Molisch, Sinan Gezici, Hisashi Kobayashi, H. Vincent Poor