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| Number | Title | Issue Date |
| 7991360 | Receiver apparatus, receiving method, and wireless communication system A receiving apparatus, a receiving method, and a radio communications system are disclosed. The receiving apparatus is for receiving CDMA signals transmitted by M antennas and received by N antennas, where M and N are positive integers. The receiving apparatus inclu... | 08/02/2011 |
| 7853214 | Dynamic multi-path detection device and method In one embodiment of the present invention, a dynamic multi-path detection device is disclosed to include at least one narrow-band signal metric estimator responsive to input signal. Each of the at least one estimators measures a particular characteristic of the inp... | 12/14/2010 |
| 7756481 | Rake receiver with time-shared fingers A rake receiver for processing a multi-path input signal received from a communications channel, wherein each multi-path component of the multi-path input signal comprises one or more symbols, comprises a plurality of fingers and a demodulator. Each of the plurality... | 07/13/2010 |
| 7693490 | Multi-equalization method and apparatus A method and apparatus is disclosed for performing a multi-equalization of a transmitted signal on a channel having varying characteristics comprising equalizing the transmitted signal using a plurality of setting defining a plurality of equalizing functions to prov... | 04/06/2010 |
| 7657230 | Procedure for detecting interfering multi-path condition A method of and system for detecting an interfering multi-path condition is provided. A parameter is determined from a pulse of a correlation function derived from a received signal. The parameter is examined to determine if it is inconsistent with a non-interfering... | 02/02/2010 |
| 7630690 | Access burst detector correlator pool A Node-B/base station has an access burst detector. The access burst detector comprises at least one antenna for receiving signals from users and a pool of reconfigurable correlators. Each correlator correlates an inputted access burst code at an inputted code phase... | 12/08/2009 |
| 7565113 | Method and apparatus to resist fading in mimo and simo wireless systems In a wireless communication system the receiver includes a first plurality of receive chains and a second plurality of antennas. Each receive chain is selectively connectable to selected antennas. The antennas are selected based on criteria obtained from a received ... | 07/21/2009 |
| 7561847 | Radio apparatus, radio communication system, spatial path control method, and spatial path control program In an MIMO mobile communication system allowing a PDMA base station to communicate with a single terminal through a plurality of paths the terminal and the base station are each responsive to information of communication quality of a spatial path detected as having ... | 07/14/2009 |
| 7558533 | Parameter estimate initialization using interpolation A receiver is described herein that is capable of receiving and processing a radio signal and further capable of using interpolation to initialize receiver parameters when there is a change in at least one delay associated with the received radio signal or when ther... | 07/07/2009 |
| 7515876 | Rake receiver with time-shared fingers A rake receiver for processing a multi-path input signal received from a communications channel, wherein each multi-path component of the multi-path input signal comprises one or more symbols, comprises a plurality of fingers and a demodulator. Each of the plurality... | 04/07/2009 |
| 7440507 | 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... | 10/21/2008 |
| 7440739 | Smart antenna device with increased operation speed and complex smart antenna device using smart antenna device A smart antenna device includes: first and second weighting units provided to correspond to two antennas disposed apart from each other so as to weight received signals inputted from the antennas, respectively; an operating unit that obtains a ratio of a weight of t... | 10/21/2008 |
| 7400896 | Apparatus and method for estimating a signal power to interference power ratio in a wireless communication system A transmission and reception apparatus and method for use in a wireless communication system, and an apparatus and method for adaptively transmit and receive a signal according to channel state in a wireless communication system. An apparatus for adaptively performi... | 07/15/2008 |
| 7394858 | Systems and methods for adaptive bit loading in a multiple antenna orthogonal frequency division multiplexed communication system In an orthogonal frequency division multiplexed (OFDM) system, a transmitter and/or receiver communicate separate data streams on non-orthogonal spatial channels. Each spatial channel may use the same set of OFDM subcarriers and may take advantage of the multipath c... | 07/01/2008 |
| 7383022 | Mobile equipment based filtering for packet radio service A method for operating a mobile equipment (ME 10) in a wireless network (12) includes determining a parameter that is indicative of a signal quality experienced by the ME, such as by determining a speed of the ME; calculating in the ME an indication of... | 06/03/2008 |
| 7379745 | Path searcher and path searching method A path searcher used in a receiver includes a power delay profile generating unit configured to generate a power delay profile based on a signal received by the receiver, a sidelobe generating unit configured to identify a sidelobe component of a path contained in t... | 05/27/2008 |
| 7373105 | Method of determining communication link quality employing beacon signals A method of determining communication link quality includes the steps of: providing communications stations (e.g., UHF communications satellites, base stations of a terrestrial cellular network) with beacon transmitters that are used to transmit two types of signals... | 05/13/2008 |
| 7333056 | Adaptive antenna radio communication device An adaptive antenna radio communication device comprises a divided band direction estimating unit (4) for estimating the direction by calculating the cross correlations between a pilot signal and sub-carrier signals of the respective divided bands received by... | 02/19/2008 |
| 7321636 | Communication device with smart antenna using a quality-indication signal Communication is performed for a first communication device having a set of antenna elements. A quality-indication signal is received from a second communication device. A complex weighting is calculated based on the quality-indication signal. A pre-transmission sig... | 01/22/2008 |
| 7315276 | Beam compression radar A concept is described for broadening the beam of a phased array radar antenna to provide continuous illumination of all radar targets within the search space, and this beam is compressed upon reception to realize the angular resolution that is possible with the ant... | 01/01/2008 |
| 7308052 | Radio transmitter apparatus and modulation scheme selecting method A wireless transmission apparatus that can accurately select an optimal modulation scheme on a per block basis in a multi-carrier communication system in which block division of subcarriers and adaptive modulation are performed. In this wireless transmission apparat... | 12/11/2007 |
| 7308287 | Compensation techniques for group delay effects in transmit beamforming radio communication In a wireless communication device, transmit weights are iteratively processed to compensate for any group delay caused by receive synchronization in the receive device. A transmit matrix of weights is computed from signals transmitted by a second communication devi... | 12/11/2007 |
| 7305216 | Transmitting and receiving arrangement with interference signal suppression control A transmitting and receiving arrangement is disclosed having a transmission path, a reception path, and a control device for suppression of interference signals which are produced by crosstalk from the transmission path to the reception path. The control device inpu... | 12/04/2007 |
| 7292609 | Method and apparatus for CDMA signal reception The N peaks are selected from a delay profile in order starting from the highest peak involved in the delay profile, the path level and path timing are determined for each of the selected peaks, and the identical paths individually responsible for different delay pr... | 11/06/2007 |
| 7274752 | Maximum ratio transmission An arrangement where a transmitter has a plurality of transmitting antennas that concurrently transmit the same symbol, and where the signal delivered to each transmitting antenna is weighted by a factor that is related to the channel transmission coefficients found... | 09/25/2007 |
| 7272189 | Method to determine the presence of multi-carrier signals A method for determining the presence of multiple carrier frequency components in an electrical signal by calculating a value for at least one characteristic of the set of peaks in a defined portion of the frequency spectrum, such as the number of peaks within a def... | 09/18/2007 |
| 7257377 | Systems and methods for improving channel estimation A method for improving channel estimation in a wireless communication system is disclosed. A wireless signal that includes a plurality of multipath components is received. N channel estimates are then obtained, where N is any positive integer greater than one. Each ... | 08/14/2007 |
| 7253769 | Method for the elimination in a receiver of incident beams resulting from multipaths, and device for implementation Method for the elimination in a receiver of an incident signal resulting from multipaths, characterized in that an array of 2n auxiliary sensors (2, 3, Ca to Cf), with n≧3, is constructed around an antenna main sensor (1), these auxiliary sensors all... | 08/07/2007 |
| 7251457 | Wireless network perimeter security system using overlaying radio frequency signals Methods, apparatuses and systems directed to securing a wireless network environment from eavesdropping and other unauthorized activities. One implementation prevents or disrupts meaningful access to information contained in WLAN RF signals that escape from a given ... | 07/31/2007 |
| 7245656 | Method of signal acquisition and mobile station using the method Briefly, one way to minimize time and frequency uncertainties when synchronizing between a transmitter and a receiver is to use a position determining method such as global positioning system (GPS) to determine position and velocity. If position can be determined th... | 07/17/2007 |
| 7239876 | Method for increased location receiver sensitivity A first image (200) of a transmitted signal is detected within a received signal containing a plurality of images of the transmitted signal. This is accomplished by detecting a second image (210) of the transmitted signal. A set of characteristics of t... | 07/03/2007 |
| 7236744 | Apparatus and method for receiving signals in a mobile communication system using adaptive antenna array technology A base station having at least one reception antenna generates a reception beam using a previous reception beam weight and a despread signal of a current reception signal, calculates an error value indicating a difference between the current reception signal and a d... | 06/26/2007 |
| 7221913 | 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. ... | 05/22/2007 |
| 7221901 | Image server and image display system The image display system for transmitting a movie picture conformable to reproducing ability of a mobile terminal such as a mobile phone, comprises an image database for recording a plurality of movie pictures associated with the identification information intrinsic... | 05/22/2007 |
| 7215699 | Path timing detection method, path timing detection apparatus, and adaptive array antenna system To provide a path timing detection method for an adaptive array antenna system realizing improved path timing detection characteristics and high-quality demodulation results by simple processing. A sliding correlator despreads signals from antennas over a plurality ... | 05/08/2007 |
| 7216047 | Time-delay discriminator A method of determining the delay between two corresponding noise-like signals comprises determining events at which the level of a first of the signal crosses a predetermined threshold, using each event to sample a second signal, combining the samples to produce an... | 05/08/2007 |
| 7205935 | Method and apparatus for processing signals for ranging applications The present invention is related to a method and apparatus for processing a signal sent by a transmitter to a receiver, in particular for ranging applications. The signal is typically sent by a satellite, and comprises a carrier signal, modulated by at least one pse... | 04/17/2007 |
| 7203232 | Apparatus and method for adjusting filter tap length of adaptive equalizer by using training sequence An apparatus and method for adjusting the filter tap length of an adaptive equalizer using a training sequence, determining a required filter tap length by using multipath information detected from correlation values of sync symbols of a segment for data synchroniza... | 04/10/2007 |
| 7190929 | Method and apparatus of RAKE finger management in RAKE receiver The present invention is an assigning system and method for assigning a plurality of rake finger tracking units of a rake receiver in a Code Division Multiple Access (CDMA) communication system. The plurality of rake finger tracking units is used for tracking a plur... | 03/13/2007 |
| 7187940 | Decorrelating rake receiver apparatus and method A decorrelating rake receiver (401) using a signal processor (213) and corresponding method (1000) to determine filter coefficients (1005). The decorrelating rake receiver includes a plurality of filters (219) arranged to be couple... | 03/06/2007 |
