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| Number | Title | Issue Date |
| 7035652 | Wireless communication structures and methods with enhanced range and performance Wireless communication structures and methods are provided that enhance range and performance via managed access to a wireless communication medium between system clients. The access is configured to maintain the low equipment costs and widespread equipment availabi... | 04/25/2006 |
| 7031755 | Distributed smart antenna system A distributed smart antenna system including an antenna array having N antenna elements, N radio frequency tranceivers, and feeder cables connecting both. N antenna elements and N radio frequency transceivers are grouped according to cell coverage range and traffic ... | 04/18/2006 |
| 7031368 | Adaptive transmitter/receiver There is provided an adaptive transceiver device which estimates a path arrival direction of a desired wave signal by using a reception antenna weight of a k-th user adaptive reception unit using a control method based on the minimum mean square error (MMSE) standar... | 04/18/2006 |
| 7026981 | Surface interaction region methodology for delimiting multipath propagation inquiry Analysis of electromagnetic (or acoustic) multipath propagation inventively confines the assessment of multipath propagation to a “surface interactive region” (“SIR”), intermediate the target and transmitter and/or the target and receiver. The down range tim... | 04/11/2006 |
| 7027782 | Transceiver apparatus and method for efficient high-speed data retransmission and decoding in a CDMA mobile communication system A method for retransmitting coded bits by a transmitter in response to a retransmission request from a receiver in a mobile communication system which separates coded bits output from an encoder into coded bits with higher priority and coded bits with lower priority... | 04/11/2006 |
| 7020474 | System and method for securing short-distance wireless communications, and applications thereof A first portable wireless communication device enters a PICONET and establishes unencrypted communications with a second wireless communication device, the PICONET master. The first portable wireless communication device transmits identification information to the s... | 03/28/2006 |
| 7016650 | Multi-path adaptive receiver apparatus and method for the reception of frequency shift keyed signals A system and method for reducing multi-path distortion of an M-ary communication signal is implemented with M×N parallel processors, a multi-path estimator, a metric selector and a decision processor. Parallel processors process each combination of possible signal ... | 03/21/2006 |
| 7012567 | Approach position input device An approach position input device includes a plurality of antennas arranged in the form of a lattice. An oscillator applies a high-frequency ac voltage to the antennas. A signal processing circuit processes signals from the antennas. A change-over switch including s... | 03/14/2006 |
| 7010019 | Assessment of delay estimation quality using interference estimates Method and system are disclosed for detecting a situation where it is likely that additional multipath components are available in the channel, but are not included in the RAKE processing. In some embodiments, the invention uses the interference estimates for all RA... | 03/07/2006 |
| 6999726 | Radio station and radio system A radio system (10) and radio system (1, 2) in which the value of parameters for a model of a received multipath signal transmitted by a remote station (20) are estimated. A sounding signal transmitted and received by the radio station is used t... | 02/14/2006 |
| 6999778 | Multipath assistance for pilot phase measurement processes A method for enhancing the accuracy of Advanced Forward Link Trilateration (AFLT) position location calculations is disclosed. A position determination entity (PDE) constructs a statistical database of pilot phase measurements reported by mobile stations (MSs) locat... | 02/14/2006 |
| 6999724 | Slowing the observed rate of channel fluctuations in a multiple antenna system A method and apparatus for reducing the observed rate of change of the channel characteristics in a system with multiple antennas at a mobile terminal. The slowing down of the observed channel fluctuations is effectuated on the downlink by either calculating or rece... | 02/14/2006 |
| 6990318 | Multi-carrier communication apparatus A multi-carrier communications apparatus which communicates between a first station and a second station as a destination station using a reference signal used for estimating a state of a channel, the multi-carrier communications apparatus comprising a multi-carrier... | 01/24/2006 |
| 6990345 | Method and apparatus for wireless position location In a method for locating a position of a terminal with use of weak signals, a combined weight to be used to separate a path from others through correlation calculation is obtained from a plurality of delay profiles measured in course of time. The obtained weight is ... | 01/24/2006 |
| 6985749 | Method and devices for transmitting and receiving information Methods and devices for sending, transmitting and/or receiving information by means of waves, in which an information signal of a carrier wave is impressed, whose frequency is continuously changed to form at least one carrier sweep in a predetermined time interval a... | 01/10/2006 |
| 6983172 | Method and apparatus for transmitting a traffic signal using an adaptive antenna array A method (100) is provided for transmitting a traffic signal with an adaptive antenna array of a base transceiver such that a subscriber unit utilizes a non-dedicated pilot transmitted from a reference antenna element for demodulation of the traffic signal. T... | 01/03/2006 |
| 6980614 | System and method for subband beamforming using adaptive weight normalization A beamforming system and method. The inventive beamforming system is adapted for use with an array antenna having a plurality of antenna elements and includes a Fast Fourier Transform (EFT) for transforming a signal received by an antenna into a plurality of frequen... | 12/27/2005 |
| 6963589 | Information processing apparatus for and method of transmitting and/or receiving broadcast signal An information processing apparatus/method employs error detection or correction to encode information to be distributed in a description format used in a multimedia network in which the error detection or correction encodes at least a portion in the header in the i... | 11/08/2005 |
| 6963727 | Direct-path-signal detection apparatus and associated methods Direct-path-signal (DPS) detector circuitry includes a standard deviation calculator circuitry configured to determine a standard deviation of a plurality of data values within a data frame. The data frame corresponds to a radio-frequency signal received via a commu... | 11/08/2005 |
| 6961543 | Pilot phase measurement error estimator for position location A wireless communication system computes the pilot phase measurement RMSE directly by determining the path width as measured by the searcher component of the modem, the path drift over time, and the measurement resolution. The path width may be based on a measuremen... | 11/01/2005 |
| 6959037 | System and method for locating and determining discontinuities and estimating loop loss in a communications medium using frequency domain correlation A system for determining characteristics associated with a communication channel includes a transmitter for transmitting a first signal via the communication channel. The system includes a receiver for receiving a second signal via the communication channel in respo... | 10/25/2005 |
| 6957046 | System and method for reducing multipath interference in packetized wireless communication systems A system for reducing multipath interference in a wireless data transmission generally includes a processor and memory device for capturing one or more data packets of the wireless data transmission. The transmitting device associates a time value and/or a spatial v... | 10/18/2005 |
| 6956892 | Receiver A receiver receives signals which are at least partially known and which have followed a plurality of different paths to said receiver. The receiver has an arrangement for dividing the area of coverage of said receiver into a plurality of sections. A plurality of re... | 10/18/2005 |
| 6954618 | Method and device for determining the fading coefficients of paths of a multi-path transmission channel linking, in particular, a base station and a cellular mobile telephone First estimations of the fading coefficients of a multi-path transmission channel are carried out in the sense of maximum likelihood. Sets of Wiener filter coefficients are stored according to predetermined speeds of movement of the mobile terminal and predetermined... | 10/11/2005 |
| 6952455 | Adaptive antenna method and apparatus A transmitter generates a pair of test weight vectors, each vector comprised of a plurality of complex entries, with each entry corresponding a different one of a plurality of antennae. The first and second complex weight vectors are applied to a dedicated pilot sig... | 10/04/2005 |
| 6950890 | Wireless receiving apparatus and method A wireless receiving apparatus and method utilizes a single MCU (microprocessor control unit) in the wireless receiver to receive and process signals having different frequencies transmitted from a plurality of peripheral devices simultaneously, and then performs th... | 09/27/2005 |
| 6944301 | Method and apparatus for discriminating multipath and pulse noise distortions in radio receivers Distortion discrimination circuitry for digital radio receivers and corresponding methods are disclosed that accurately and efficiently discriminate distortion events, including impulse noise and multipath distortion events, to improve the quality of audio output si... | 09/13/2005 |
| 6944244 | Mechanism for OFDM equalizer tap initialization using an adaptive algorithm A method for initializing an equalizer in an Orthogonal Frequency Division Multiplexing (“OFDM”) receiver includes generating a desired equalizer tap setting based on an adaptive algorithm. An initial setting for the adaptive algorithm corresponds to an approxim... | 09/13/2005 |
| 6940914 | Turbo channel estimation for OFDM systems A system and method for estimating a channel in a wireless receiver is disclosed. The method preferably applies to a communication system using the OFDM standard. The method comprises receiving a block of “n” transmitted symbols, the symbols including pilot symb... | 09/06/2005 |
| 6922549 | Error vector magnitude selection diversity metric for OFDM Describe herein is an apparatus for inclusion in a station of a wireless network, and a method implemented in a station of a wireless network. The method includes wirelessly receiving data via each of a plurality of antennas, the data corresponding to a packet of in... | 07/26/2005 |
| 6907061 | Method for controlling the emission power of a transceiver in communication with another transceiver The present invention relates to a method for use in controlling the emission power of a transceiver which is in communication with another transceiver via a communication system, said method including the steps of measuring the amplitude or the power of the signal ... | 06/14/2005 |
| 6898420 | Method and apparatus for avoiding spurious signal receiver desensitizing An apparatus and method for eliminating interference caused by spurious signals in communication signals communicated via a communication device on any one of a plurality of different channels, the communication device operating at a rate set by a system clock signa... | 05/24/2005 |
| 6892055 | Radio station A radio station (10) in which the value of parameters for a model of a received multipath signal are estimated, the model comprising a value representative of the perpendicular distance between the plane of the reflecting surfaces (40, 50) and the radi... | 05/10/2005 |
| 6889355 | Method and apparatus for data transmission using multiple transmit antennas A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas is disclosed. A set of bits of a digital signal are used to generate a codeword. Codewords are provided according to a channel code. Delay elements m... | 05/03/2005 |
| 6882678 | Method and system for canceling multiple access interference in CDMA wireless communication system A receiver for the third-generation (“3G”) CDMA wireless system is disclosed. The receiver is adapted to mitigate the correlated interference by adaptive antenna process which will maximize the signal-to-interference-plus-noise ratio. After the mitigation of cor... | 04/19/2005 |
| 6865374 | Video recovery system and method A recover system and method for a wireless video communication system. The system comprises: a transmitter for transmitting encoded video data to a wireless device; a receiver for receiving a return signal from the wireless device; a signal analysis system for analy... | 03/08/2005 |
| 6839543 | Method and system for detecting and discriminating multipath signals A wireless communication system that utilizes a circularly polarized transmitting antenna with dual orthogonal circularly polarized receiving antenna. According to some embodiments, the present invention provides a wireless communication system that includes a first... | 01/04/2005 |
| 6834043 | Method and device for exploiting transmit diversity in time varying wireless communication systems A method of operating a communication system including at least two transmitting antennas and at least one receive antenna. Symbols are encoded across the at least two transmitting antennas during a coding interval. Data is received at each receive antenna and at ea... | 12/21/2004 |
| 6826392 | Multipath noise reduction method, multipath noise reducer, and FM receiver A multipath noise reducer extracts a high-frequency signal from a demodulated signal obtained from a frequency-modulated signal, and generates a noise reduction coefficient from the extracted high-frequency signal. The demodulated signal is also separated into high-... | 11/30/2004 |
| 6826410 | Method and apparatus relating to radio communication The present invention pertains to the field of methods and apparatuses relating to radio communication; and in particular to the part of this field that concerns cellular radio communication. The present invention addresses mainly the problem of improving reliabilit... | 11/30/2004 |
