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| Application No. | Application Title | Issue Date |
| 20120045999 | ADAPTIVE ARRAY ANTENNA DEVICE AND ANTENNA CONTROL METHOD An adaptive array antenna device (120) includes: a wireless transmission antenna unit (121) which wirelessly transmits content data to q partner device; a path information calculation unit (123) which calculates transmission path information for spe... | 02/23/2012 |
| 20110143683 | Portable Electronic Device Positioning Based On Multipath Characterization Information Associated With Wireless Network Transmitting Devices Techniques are provided which may be implemented in various methods and/or apparatuses to allow a portable electronic device to characterize and/or otherwise identify that certain wireless signals may be multipath signals and/or non-multipath signals. Given such signal/... | 06/16/2011 |
| 20110143682 | APPARATUS AND METHOD OF PREDICTING RADIO WAVE ENVIRONMENT Provided is an apparatus and method of predicting a radio-wave environment. The apparatus may include an arrival recognition unit to determine whether a ray emitted from a transmission unit of the ray tracing scheme arrives within a reception radius, a position determin... | 06/16/2011 |
| 20110009071 | Coherence Time Estimation and Mobility Detection for Wireless Channel Techniques are provided to measure how fast a wireless channel is changing between a first wireless communication device (e.g., a wireless base station or access point) and a second wireless device (e.g., a wireless client device) based on signals that the first communi... | 01/13/2011 |
| 20110003560 | RADIO COMMUNICATION SYSTEM, COMMUNICATION APPARATUS, RADIO COMMUNICATION NETWORK SYSTEM AND METHOD THEREFOR A radio communication system provided with a communication device and a radio communication network system is characterized by comprising a transmission delay estimate information transmitting means for transmitting transmission delay estimate information to the radio c... | 01/06/2011 |
| 20100304687 | METHODS AND APPARATUS FOR SIMULTANEOUS ESTIMATION OF FREQUENCY OFFSET AND CHANNEL RESPONSE FOR MU-MIMO OFDMA Methods and apparatus are provided for simultaneous estimation of frequency offset and channel response for a communication system, such as a MU-MIMO communication system. An iterative method is provided for estimating frequency offset and channel response for a plurali... | 12/02/2010 |
| 20100285754 | RADIO EQUIPMENT, AND METHOD AND PROGRAM OF DETERMINING SIGNAL TRANSMISSION SPEED It is possible to determine a signal transmission speed in a signal transmission system operated by radio equipment upon receiving transmission of a base band signal from a radio equipment control (REC) and operates on the signal. The radio equipment that operates by re... | 11/11/2010 |
| 20100285753 | SYSTEMS AND METHODS FOR SIMULATING A MULTIPATH RADIO FREQUENCY ENVIRONMENT Embodiments include systems and methods for simulating a multipath environment for testing a device. In one embodiment, a plurality of antennas are placed around a device under test in an anechoic chamber. Each of a plurality of the antennas is connected to a path of a ... | 11/11/2010 |
| 20100167662 | SYSTEM, METHOD, AND CIRCUIT FOR DISTANCE MEASUREMENT BETWEEN TWO NODES OF A RADIO NETWORK A system and method for distance measurement between two nodes of a radio network is provided. A first unmodulated carrier signal is transmitted by the first node and received by the second node. A second unmodulated carrier signal is transmitted by the second node and ... | 07/01/2010 |
| 20100167661 | TRANSMITTER-RECEIVER CIRCUIT AND METHOD FOR DISTANCE MEASUREMENT BETWEEN A FIRST NODE AND A SECOND NODE OF A RADIO NETWORK A transmitter-receiver circuit and a method for distance measurement between a first node and a second node of a radio network is provided, wherein a mode of the first node and a mode of the second node are switched from a normal mode for communication in the radio netw... | 07/01/2010 |
| 20100105332 | Method and System for Dynamic Spectrum Access Using Detection Periods Methods and systems for dynamic spectrum access (DSA) in a wireless network are provided. A DSA-enabled device may sense spectrum use in a region and, based on the detected spectrum use, select one or more communication channels for use. The devices also may detect one ... | 04/29/2010 |
| 20100093282 | MULTI-TRANSCEIVER ARCHITECTURE FOR ADVANCED Tx ANTENNA MONITORING AND CALIBRATION IN MIMO AND SMART ANTENNA COMMUNICATION SYSTEMS Exemplary embodiments of system and method are provided for measuring signal amplitude, phase and/or delay offsets between multiple transmit signals fed through the transmit signal processing chains and wirelessly transmitted over the transceive antennas of separate tra... | 04/15/2010 |
| 20090285279 | PHASE FREQUENCY DETECTOR WITH PULSE WIDTH CONTROL CIRCUITRY A phase frequency detector comprising a detection circuit and a reset circuit. The phase frequency detector may receive a feedback signal having a predetermined pulse width. The detection circuit may generate a first control signal based on a reference signal, and a sec... | 11/19/2009 |
| 20090286485 | RADIO COMMUNICATION UNIT AND METHOD FOR CALCULATING FREQUENCY SHIFT A radio communication unit includes: a reference-signal extraction section that extracts a phase of a reference signal from a baseband signal; a frequency-shift calculation section that calculates a phase shift of the received reference signal with respect to time, and ... | 11/19/2009 |
| 20090227210 | Method and System for Signal Quality Measurement Based on Mean Phase Error Magnitude of a Signal Various aspects of a method and system from signal quality measurement based on mean phase error magnitude of a signal are presented. Aspects of the system may comprise circuitry that receives a time phase corrected Bluetooth signal via an RF channel. The circuitry may ... | 09/10/2009 |
| 20090191819 | APPARATUS AND METHOD FOR CALIBRATION IN MULTI-ANTENNA SYSTEM Apparatus and method for calibration in a multi-antenna system are provided. The method includes setting at least two transmission paths connected to antennas, respectively, as reference transmission paths, when receiving compensation signals transmitted in the referenc... | 07/30/2009 |
| 20090170543 | METHOD AND APPARATUS TO MAINTAIN NETWORK COVERAGE WHEN USING A TRANSPORT MEDIA TO COMMUNICATE WITH A REMOTE ANTENNA In a cellular communications system having a centralized radio processing portion (a base station hotel) in communication with a plurality of remote air interface radio portions (or radio heads) over a transport medium, the centralized radio processing portion compensat... | 07/02/2009 |
| 20090116575 | Method of a receiver estimating a plurality of channels A method and apparatus of a receiver estimating a plurality of channels is disclosed. The method includes the receiver receiving a composite signal. The composite signal includes a signal from each of a plurality of transmission antennas, wherein the signal of each tran... | 05/07/2009 |
| 20090068958 | FILTER FREQUENCY CHARACTERISTIC DETECTION DEVICE AND FILTER FREQUENCY CHARACTERISTIC TESTING DEVICE A filter frequency characteristic detection device includes a filter which receives a first signal and a second signal, a comparator which compares the first signal and the second signal which have passed through the filter, an offset adjusting circuit which gives an of... | 03/12/2009 |
| 20080153424 | METHOD AND SYSTEM FOR DETERMINING A TIME DELAY BETWEEN TRANSMISSION & RECEPTION OF AN RF SIGNAL IN A NOISY RF ENVIRONMENT USING FREQUENCY DETECTION There present description is directed to a method and a system for determining a time delay between a transmission and a reception of an RF signal in a noisy environment. The method comprises: transmitting the RF signal according to a transmit frequency pattern, the tra... | 06/26/2008 |
| 20080139127 | Method and apparatus for signal searching A method and corresponding apparatus for searching for a signal is presented. The apparatus may be configured to select a first bin within a range of bins characterizing an uncertainty region. The bins may represent a phase within a bandwidth of interest. The apparatus ... | 06/12/2008 |
| 20080132174 | METHOD AND SYSTEM FOR ADAPTIVE RAY LAUNCHING A system (170) and method (300) for ray launching is provided. The system can include a transmitter (110) for successively launching a plurality of rays, and a receiver (120) for receiving transmission rays and reflection rays. A controller (... | 06/05/2008 |
| 20080125054 | METHOD AND SYSTEM FOR DETERMINING A TIME DELAY BETWEEN TRANSMISSION AND RECEPTION OF AN RF SIGNAL IN A NOISY RF ENVIRONMENT USING PHASE DETECTION The present application describes a method and system for determining a time delay between a transmission and a reception of an RF signal in a noisy environment. The method comprises: transmitting the RF signal; shifting a phase of the RF signal after a first time perio... | 05/29/2008 |
| 20070093213 | Method and system for electromagnetic field evaluation The field received starting at least one source of electromagnetic field in a determined position of the territory covered by a communication network has a plurality of field sources estimated on the basis of a propagation model. The model in question is modified, for e... | 04/26/2007 |
| 20070093212 | Radio wave propagation characteristic estimation system, and its method and program A radio wave characteristic estimation system and its method are provided to estimate radio wave propagation characteristics in an investigation object area in a part of a coverage area of a wireless system, which becomes an object of the estimation, at high speed and w... | 04/26/2007 |
| 20070077885 | System and method for adapting system parameters in radio based communications systems A method for adapting at least one system parameter (φi) defining a connection (C) between a transmitter unit (2) and a receiver unit (3, 4) in a radio based communications system (1), wherein an adaptation frequency (ν) at which the system parame... | 04/05/2007 |
| 20070021121 | Methods and apparatus for supporting timing and/or frequency corrections in a wireless communications system A wireless terminal determines the position of a moving base station and determines timing and/or frequency corrections. A wireless terminal determines its relative position with respect to the base station and determines a timing adjustment correction. The wireless ter... | 01/25/2007 |
| 20070021122 | Methods and apparatus for providing base station position information and using position information to support timing and/or frequency corrections A wireless terminal receives base station position over an airlink, determines its relative position with respect to the base station and determines a timing adjustment correction. The wireless terminal applies the determined timing correction to control uplink signalin... | 01/25/2007 |
| 20060292994 | Transmitter-receiver of mobile communication system According to a transmitter-receiver of a mobile communication system of the present invention, it is possible to preferably perform the communication with a desired user without deteriorating the quality of service of an interference user even when the desired user and ... | 12/28/2006 |
| 20060292982 | Method for accomodating timing drift between base stations in a wireless communications system A method is provided for controlling communications between a base station and a mobile device. The method comprises enlarging a search window in which a transmission is expected to be received in response to the absence of an external timing signal, such as when the gl... | 12/28/2006 |
| 20060281416 | Data transmission error reduction via automatic data sampling timing adjustment A data transmission error reduction circuit is formed including a delay circuit, a detection circuit and a control circuit. In one embodiment, the delay circuit includes n delay element and multiplexor pairs, selectively employable to apply an aggregate amount of time d... | 12/14/2006 |
| 20060270360 | Apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas An apparatus and method for transmitting/receiving data in a mobile communication system using multiple antennas are provided. A receiver estimates a fading channel of received data, selects a weight set relative to a maximum data transmission rate from at least one wei... | 11/30/2006 |
| 20060234724 | Method, apparatus and system for GPS time synchronization using cellular signal bursts A system, apparatus and corresponding method by which to synchronize to a time reference a main module of a device—a main module such as global positioning system (GPS) receiver—using a cellular communication signal received by a cellular module also included in the... | 10/19/2006 |
| 20060154611 | DISTANCE ESTIMATION A method for estimating the distance between a transmitter and a receiver, the transmitter being arranged to transmit a signal as a series of bursts, and the carrier frequency of each burst being set according to a predetermined sequence, the method comprising: forming ... | 07/13/2006 |
| 20060135078 | Path timing detecting method in mobile communications system and base station A path timing detecting method and a base station are provided which can improve the accuracy of detecting the path timings and check an increase in the processing load in the random access in a mobile communications system. First, the method identifies the effective pa... | 06/22/2006 |
| 20060111101 | Method and system for identifying occurrence of shadowing phenomenon during wireless communications A method for identifying occurrence of shadowing phenomenon is to be implemented using a wireless communications system that includes signal transmitting and receiving devices. The signal-receiving device periodically executes a synchronization process to evaluate quali... | 05/25/2006 |
| 20060068707 | Frequency selective leveling loop for multi-signal phased array transmitters A frequency selective leveling loop that performs phase and amplitude control of multiple signals within a phased array structure is disclosed. The leveling loop sensor componants are embedded into the array structure. The frequency selective leveling loop can be used w... | 03/30/2006 |
| 20060057968 | Communication management method, central control station, communication station, communication management program, and computer-readale recording medium storing communication management program A central control station carries out allocations of transmission rights according to a rule that a value obtained by subtracting (i) a value of a broken line (11) from (ii) a value of a straight line (10) is always limited according to a certain constant ... | 03/16/2006 |
| 20060010358 | Method and apparatus for calibrating and/or deskewing communications channels A series of pulses may be driven down each drive channel, which creates a series of composite pulses at the output of the buffer. Each composite pulse is a composition of the individual pulses driven down the drive channels. Timing offsets associated with the drive chan... | 01/12/2006 |
| 20050287956 | Effective time-of-arrival estimation algorithm for multipath environment An algorithm identifies a line-of-sight (LOS) signal that may be used to provide an effective time-of-arrival (TOA) estimation. ... | 12/29/2005 |
