Sergeyev
Andrei Sergeyev, Snyder, NY US
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20120181431 | Portable Terahertz Receiver for Advanced Chemical Sensing - The present invention is directed to a system and method for advanced chemical sensing utilizing a Terahertz receiver instrument having a compact tunable heterodyne mixer to detect chemical species in a noisy background of pollutants, and provide fast acquisition and analysis of the 0.1-2 THz spectrum. The present invention directly couples a microbolometer with a THz quantum cascade laser (QCL) that is utilized as the local oscillator (LO) source for the receiver. | 07-19-2012 |
20120248412 | Vertically Correlated Clusters of Charged Quantum Dots for Optoelectronic Devices, and Methods of Making Same - Devices (e.g., optoelectronic devices such as solar cells and infrared or THz photodetectors) with a nanomaterial having vertically correlated quantum dots with built-in charge (VC Q-BIC) and methods of making such devices. The VC Q-BIC material has two or more quantum dot layers, where the layers have quantum dots (individual quantum dots or quantum dot clusters) in a semiconductor material, and adjacent quantum dot layers are separated by a spacer layer of doped semiconductor material. The VC-QBIC nanomaterial provides long photocarrier lifetime, which improves the responsivity and sensitivity of detectors or conversion efficiency in solar cells as compared to previous comparable devices. | 10-04-2012 |
Andrey A. Sergeyev, Houghton, MI US
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20150274190 | END OF TRAVEL STOP - In an embodiment of the invention, an end of travel stop is provided for a steering gear assembly having a housing, a rack, and a tie rod. The end of travel stop includes an annular body comprising a plurality of segments defining a first crenellated side of the annular body and a second crenellated side of the annular body. The stop is circumscribed over the rack and is oriented between the housing and the tie rod, and is configured to absorb an impact force transferred through the tie rod and to prevent overtravel of the rack. | 10-01-2015 |
Sergey Sergeyev, Kista SE
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20100296155 | OPTICAL FIBER RAMAN AMPLIFIER - The invention provides simultaneous suppression of PMD and PDG in a fiber Raman amplifier. One embodiment employs a two-section fiber with one section being unspun and the other, longer, section having a periodic spin profile. The other embodiment employs a single segment fiber having a periodic exponentially varying spin profile. | 11-25-2010 |
20120207435 | OPTICAL DEVICES AND METHODS OF MANUFACTURE OF OPTICAL DEVICES - A method for performing a multi-stage dilation of optical fibres is described, the method comprising performing successive dilation steps such that the adiabatic condition is maintained throughout the fibre. There is also described various optical devices employing such multi-stage dilated optical fibres, as well as methods of manufacture of the optical devices. | 08-16-2012 |
Vadim Sergeyev, Nizhny Novgorod, Niz RU
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20150303958 | WIRELESS INTERFERENCE MITIGATION - Embodiments relate to apparatus for wireless interference mitigation within a first User Equipment (UE). The apparatus comprises at least one channel estimator for estimating a first channel transfer function associated with a first received signal designated for the first UE, and for estimating a second channel transfer function associated with a second received, interference, signal. A symbol estimator is responsive to the at least one channel estimator to process at least the first received signal to produce a symbol estimation. A demodulator, which is responsive to the channel estimator, demodulates the symbol estimation to an output representing a received data unit corresponding to the symbol estimation. The demodulator has a processing unit arranged to demodulate the symbol estimation using the first channel transfer function, the second channel transfer function and a respective modulation scheme for at least the first received signal. | 10-22-2015 |
Vadim Sergeyev, Nizhny RU
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20130194943 | EVOLVED NODE B AND METHOD FOR COHERENT COORDINATED MULTIPOINT TRANSMISSION WITH PER CSI-RS FEEDBACK - An evolved Node B (eNB) and method for coherent coordinated multipoint transmission with per CSI-RS feedback are generally described herein. The eNB may configure a first cooperating point and a second cooperating point to jointly transmit a multi-node channel-state information (CSI) reference signal (RS) (CSI-RS) in predetermined resource elements of a resource block. The eNB may receive CSI reports as feedback from user equipment (UE). The CSI reports may include a precoding matrix indicator (PMI) indicating relative phase information between the cooperating points based on the multi-node CSI-RS. The CSI reports for the multi-node CSI-RS may be restricted to a PMI of rank-1. The eNB may configure the cooperating points for a coherent joint transmission to the UE based at least on the relative phase information. The coherent joint transmission may also be jointly beamformed based on single-node PMIs. | 08-01-2013 |
20140301354 | VIRTUAL CARRIER SENSING MECHANISM FOR LONG TERM EVOLUTION (LTE) - Embodiments for providing virtual carrier sensing for LTE are generally described herein. In some embodiments, a first evolved Node B (eNB) sends a notification of subsequent DL transmission to a first UE in a downlink. In the uplink, the first UE sends a confirmation of the received DL notification. A second eNB overhears the confirmation, decodes it and extracts the information of the DL resources that the first eNB is planning to use. If the second eNB is not already transmitting in the indicated DL resources, the second eNB marks the indicated DL resources as busy and refrains from transmitting in those resources. The second eNB may then reschedule its transmission using alternative resources so that interference from the second eNB1 may be avoided. | 10-09-2014 |
20150085761 | MILLIMETER-WAVE COMMUNICATION DEVICE AND METHOD FOR INTELLIGENT CONTROL OF TRANSMIT POWER AND POWER DENSITY - Embodiments of a millimeter-wave (mmW) communication device and methods for intelligent control of transmit power and power density are generally described herein. In some embodiments, a mmW base station includes a beamforming processor that is to configure a large-aperture array antenna for multi-beam transmissions at mmW frequencies to a plurality of user equipment (UE). The beamforming processor may allocate each UE a non-interfering spectral portion of a full channel bandwidth that is substantially less than the full channel bandwidth and perform multi-beam beamforming to concurrently direct a plurality of multi-user multiple-input multiple-output (MU-MIMO) antenna beams to the UEs for a concurrent transmission of data streams to the UEs within their allocated spectral portion in accordance with a transmit power allocation. | 03-26-2015 |
Vadim S. Sergeyev US
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20110159801 | DISTRIBUTED SIMULTANEOUS TRANSMIT AND RELAY SYSTEM - Briefly, in accordance with one or more embodiments, a distributed simultaneous transmit and receive system implements relaying without incurring the additional overhead associated with relaying and without requiring additional isolation techniques to isolate the transmit and receive circuits of the relay stations. During a first transmission resource, a base station transmits to a first relay station while a second relay station transmits to one or more mobile stations associated with the second relay station. During a second transmission resource, the base station transmits to the second relay station while the first relay station transmits to one or more mobile stations associated with the first relay station. | 06-30-2011 |
Vadim S. Sergeyev, Nizhny Novogorod RU
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20110044392 | Systems And Methods For High-Throughput Wideband Wireless Local Area Network Communications - A frame format provides for wideband wireless local area network communications and informs narrower-band communication units when the channels are occupied by wider-band communication units. In some embodiments, the frame format includes a channelization field identifying channels that are used for communicating subsequent wideband fields of a packet, and a wideband-header field communicated on the identified channels. The wideband-header field may identify sub-fields that may be present in the wideband-header field, and may identify the presence of a wideband-data field. A long-compatibility field may be present that provides protection at the MAC level. The long-compatibility field may transport MAC frames that may include medium-reservation information compatible with narrower-band communication units. | 02-24-2011 |
Vadim Sergeyevich Sergeyev, Nizhny RU
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20150029874 | FREQUENCY OFFSET MEASUREMENT ENHANCEMENTS FOR LONG TERM EVOLUTION (LTE) - Embodiments for providing frequency offset measurement enhancements are generally described herein. In some embodiments, user equipment is informed of a configuration of a first reference signal and a configuration of a second reference signal. The first reference signal is provided to user equipment for performing channel estimation. A second reference signal for estimating carrier frequency offset is provided, wherein the second reference signal is co-located with the first reference signal. A carrier frequency offset estimation is calculated based on the co-located first and second reference signals. | 01-29-2015 |
Vadim Sergeyevich Sergeyev, Novgorod RU
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20090059860 | SCHEDULER AND METHOD FOR ALLOCATING TIME AND FREQUENCY DIMENSIONS OF DOWNLINK BURSTS IN BROADBAND WIRELESS ACCESS NETWORKS - Embodiments of a scheduler and a method for assigning frequency and time dimensions of downlink bursts in broadband wireless access networks are generally described herein. Other embodiments may be described and claimed. In some embodiments, the frequency and time dimensions of downlink bursts are assigned to each of a plurality of subscriber stations based on one or more individual channel characteristics and one or more individual data requirements associated with the subscriber stations. | 03-05-2009 |
Vlad Sergeyev, Toronto CA
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20140264021 | ION MOBILITY SPECTROMETRY (IMS) DEVICE WITH CHARGED MATERIAL TRANSPORTATION CHAMBER - An ion detection assembly is described that includes a drift chamber, an inlet assembly, and a collector assembly. The drift chamber is formed of substantially non-conductive material and/or semi-conductive material. A patterned resistive trace is deposited on one or more of an interior surface or an exterior surface of the drift chamber. The patterned resistive trace is configured to connect to a source of electrical energy. The inlet assembly and the collector assembly are in fluid communication with the drift chamber. The inlet assembly includes an inlet for receiving a sample, a reaction region for ionizing the sample, and a gate for controlling entrance of the ionized sample to the drift chamber. The collector assembly includes a collector plate for collecting the ionized sample after the ionized sample passes through the drift chamber. | 09-18-2014 |
Vlad Sergeyev, Laval CA
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20140246581 | LOOPED IONIZATION SOURCE - Looped ionization sources for ion mobility spectrometers are described. The ionization sources can be used to ionize molecules from a sample of interest in order to identify the molecules based on the ions. In an implementation, an electrical ionization source includes a wire that is looped between electrical contacts. The wire is used to form a corona responsive to application of voltage between the wire and the walls of an ionization chamber. The corona can form when a sufficient voltage is applied between the wire and the walls. A difference in electrical potential between the wire and a wall forming an ionization chamber, in which wire is contained, can be used to draw the ions away from the wire. In embodiments, the wire can be heated to reduce the voltage used to strike the corona. The ions, subsequently, may ionize the molecules from the sample of interest. The looped corona source can also be used in mass spectrometers (MS). | 09-04-2014 |
Vladimir Sergeyev, Rehovot IL
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20100305556 | System and Method for Detection of Foreign Substances - A cryosurgical instrument, in which a separator is installed in a central feeding lumen and/or in a cryotip to separate gaseous and liquid components of a cryogen. | 12-02-2010 |
20110184397 | System and Method for Detection of Foreign Substances - A sensing unit is presented for use in identifying at least one foreign substance in a region of interest. The sensing unit comprises at least one measurement unit, which comprises one or more sensor elements each configured and operable to be responsive to at least one foreign substance in the vicinity thereof. Each sensor element is mounted in its own compartment having an inlet and an outlet thus defining an environmental region in the vicinity of the sensor element separated from the surroundings of the compartment. | 07-28-2011 |
Vladimir Sergeyev, Redmond, WA US
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20080222189 | Associating multidimensional data models - A source multidimensional data model is associated with a target multidimensional data model, for purposes of, for example, copying or linking data between the source and the target. Individual dimensions are mapped from the source to the target. Within each mapped dimension, individual dimension members are mapped from the source to the target. The resulting association may be stored and utilized to generate executable statements for copying or linking data between the source and the target. | 09-11-2008 |