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| Number | Title | Issue Date |
| 8090002 | Method and apparatus for spreading signal acquisition and tracking A spreading signal acquisition and tracking method and apparatus is proposed. In accordance with the present invention, coherent integrations are performed by segments and stored for a non-coherent integration. A better freedom of the non-coherent interval selection... | 01/03/2012 |
| 8059694 | Method, apparatus and computer program to efficiently acquire signals in a cognitive radio environment Signal instances are detected from within a long period of a received radiofrequency RF signal envelope, grouped according to signal level, and periodicities are determined among the grouped signal instances. Periodicity of one of the groups is matched to a known pe... | 11/15/2011 |
| 8023553 | Circuits for generating delayed high frequency clock signals used in spread-spectrum clocking A method of generating a spread-spectrum clock signal includes delaying a high frequency clock signal to provide a plurality of delayed high frequency clock signals selected among to provide a spread-spectrum clock signal for a synchronous system. ... | 09/20/2011 |
| 7978748 | Synchronization band selection of a frequency hopping wireless receiver Methods and systems of a receiver selecting a subset of plurality of frequency hopping bands for synchronization of the receiver are disclosed. One method includes the receiver determining a receive signal quality metric for each band of the plurality of frequency h... | 07/12/2011 |
| 7912111 | Dynamic switching of carrier tracking loops without loss of tracking information A method of dynamic switching of a plurality of carrier loops in a radio receiver. The method comprises: (A) receiving a radio signal from a radio source by using a carrier tracking loop; (B) substantially continuously estimating a signal-to-noise ratio (SNR) of the... | 03/22/2011 |
| 7599419 | Method and apparatus for use of space time trellis codes based on channel phase feedback A method for multiple-input-multiple-output (MIMO) wireless communication comprises the steps of generating inner and outer codes based on channel state information available at a transmitter and concatenating different inner codes with different outer codes; and us... | 10/06/2009 |
| 7577182 | Transmitter apparatus, receiver apparatus, transmission method, reception method and program An input receiving section 102 of a transmitter apparatus 101 receives inputs of multiple synchronized signals r1, . . . , rN, an asynchronizing section 103 outputs multiple asynchronized signals v1, . . . , v | 08/18/2009 |
| 7440491 | Ultra-wideband communications system devices System for ultra-wideband communications providing high data rates over an extended operating range in the presence of interferers. A preferred embodiment comprises an ultra-wideband (UWB) device that makes use of a portion of the UWB frequency range to help provide... | 10/21/2008 |
| RE40518 | Channel assignment method for a base station in a mobile communication system There is disclosed a method for performing channel assignment in a base station for a mobile communication system. Upon receipt of a request for assigning a channel to a mobile station, a base station transceiver system (BTS) generates a connect message including ch... | 09/23/2008 |
| 7426175 | Method and apparatus for pilot signal transmission Pilot sequences are constructed from distinct “classes” of chirp sequences that have an optimal cross correlation property. Utilization of chirp sequences for pilot sequences results in pilot sequences that have optimal or nearly-optimal cross correlation and au... | 09/16/2008 |
| 7424050 | Matched filter circuit and correlation calculation method There are provided input route selecting means 711-713 and 723-725 for selecting, in accordance with the oversampling phase, input routes along which reception data and codes are to be input to individual shift register means, a plurality... | 09/09/2008 |
| 7415263 | Receiver for a wireless communication device A receiver for a wireless communication device comprising means for determining a sequence of code block addresses for received rate matched encoded data to allow rate de-matching and decoding to be performed on a code block by code block basis for the received rate... | 08/19/2008 |
| 7415082 | Receiver including synch pulse detection and associated method A receiver includes a matched filter matched to a synch pulse and generates a matched filter output signal having peaks and valleys with one of the peaks corresponding to the synch pulse. An orthogonal filter is inversely matched to the synch pulse and generates an ... | 08/19/2008 |
| 7406114 | Pseudo-noise correlator for GPS spread-spectrum receiver A terrestrial C/A code GPS receiver system digitally samples, filters and stores a segment of 11 half chips of the received composite as a binary number and multiplexes this number for parallel correlation with each of a series of multibit code replicas for the sate... | 07/29/2008 |
| 7400867 | Radio broadcast receiver A radio broadcast receiver is provided which reduces the degradation in quality of diversity-received signals. When a difference in level between a reception signal of a main antenna and a reception signal of a sub antenna is less than a predetermined threshold valu... | 07/15/2008 |
| 7397842 | Method and apparatus for combining weight computation in a DS-CDMA RAKE receiver A RAKE receiver circuit generates combining weights based on channel estimates and combining statistics that comprise channel coefficient statistics, noise statistics, and channel estimation error statistics. Together, these statistics incorporate the relationships ... | 07/08/2008 |
| 7388899 | Spreading code structure for ultra wide band communications The ultra wide band communication system of the present invention includes a transmitter (station) and a receiver (station). The transmitter and the receiver employ spreading code comprised of code groups, which respectively comprise varied, auto-correlated codes. C... | 06/17/2008 |
| 7388901 | Method for receiving spectrum spreading signals with frequency shift correction A method for receiving spectrum spreading signals using a Doppler-effect frequency-shift correction generates a corrective signal based on an estimation of a modulation period related to the Doppler effect detected in a preamble portion of a received signal. The cor... | 06/17/2008 |
| 7386026 | Method and system for synchronizing and selectively addressing multiple receivers in a wireless, spread spectrum communication system A system and method for synchronizing and selectively addressing multiple receivers in a wireless communication system includes a spread spectrum transmitter and one or more spread spectrum receivers. The transmitter transmits a signal having an observable parameter... | 06/10/2008 |
| 7373117 | Power control in telecommunications networks A radio frequency transmitter is power controlled using a controlling system including an integrating controller, together with an inner and an outer control loop. A tracking signal supplied by the inner loop to the integrating controller of the outer loop is used t... | 05/13/2008 |
| 7369836 | Adjacent interference removal device An adjacent interference removal device capable of providing an improved reception quality. An IF signal Sin having passed through an IF filter having a pass frequency band width of 200 kHz is supplied to a first narrow band filter having a pass frequency band width... | 05/06/2008 |
| 7369622 | Diversity circuit demodulating OFDM-method signals and diversity receiving apparatus having said diversity circuit therein In a receiving apparatus, two respective reference-point computing units in respective diversity branches calculate reference points on a constellation, and two respective reference-point specifying units in the two diversity branches select respectively the referen... | 05/06/2008 |
| 7362793 | Base station having a set of phased array antennas A spread spectrum base station for receiving a plurality of spread spectrum signals and a plurality of phased spread spectrum signals includes an antenna and a plurality of delay devices connected to the antenna, each delay device outputting a time-delayed spread sp... | 04/22/2008 |
| 7359399 | CDMA path protection method based on path protection information A path protection method for a CDMA reception apparatus is disclosed, which obtains correlation value levels while shifting the despreading timing of reception data little by little, searches for optimal reception timings, outputs a plurality of finger path timings,... | 04/15/2008 |
| 7356094 | Digital broadcast receiving apparatus A digital broadcast receiving apparatus for receiving a broadcast signal generated by combining sub signals modulated using a random sequence generated based on an initial value set in accordance with a frequency of a broadcast channel by a signal transmission contr... | 04/08/2008 |
| 7346070 | Shared wireline code division multiple access A first network component of an apparatus in one example is coupled with one or more additional network components. The first network component and the one or more additional network components communicate with one another over a single, shared wireline path through... | 03/18/2008 |
| 7346094 | System and method for transmitting data and additional information simultaneously within a wire based communication system A system and method is provided for transmitting data signals and additional information signals having partially overlapping frequency bands simultaneously within a wire based communication system over the same wired medium using a spread spectrum technique for mod... | 03/18/2008 |
| 7327780 | Wireless communications systems and methods for multiple operating system multiple user detection The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection ... | 02/05/2008 |
| 7327717 | Wireless LAN receiver synchronization A WLAN (Wireless Local Area Network) receiver is provided that provides at least two acquisition units and at least two tracking units. The acquisition units perform a synchronization acquisition process, and the tracking units perform a synchronization tracking pro... | 02/05/2008 |
| 7321645 | Method and arrangement for detecting a random access channel preamble using multiple antenna reception in a communication system In a method and arrangement for detecting a random access channel preamble in a received uplink signal, the uplink signal is received at one or more receive antennas and contains data related to a random access channel preamble. The received uplink signal is subject... | 01/22/2008 |
| 7310365 | Group decision rule in code tracking using a delay lock loop (DLL) System and method for code acquisition in a wireless communications system with a delay lock loop. A preferred embodiment comprises assigning a delay lock loop (DLL) to each path in a received signal with multipath, adjusting each DLL to maximize sample strength, gr... | 12/18/2007 |
| 7310368 | Means for initiative synchronization and cell searching based on the CDMA system of multipath energy window The present invention discloses an apparatus for initial synchronization and cell search in a CDMA system based on multipath energy window. The apparatus perform initial synchronization and adjacent cell search by using multipath energy window based on the processin... | 12/18/2007 |
| 7305021 | Real-time software receiver A real-time software receiver that executes on a general purpose processor. The software receiver includes data acquisition and correlator modules that perform, in place of hardware correlation, baseband mixing and PRN code correlation using bit-wise parallelism. | 12/04/2007 |
| 7301930 | Encoder and method for efficient synchronisation channel encoding in UTRA TDD mode An encoder and method for efficient synchronization channel encoding in UTRA TDD mode by: producing a codeword a, where a=dG+z modulo-2, where d represents a predetermined code group to be encoded, G represents a predetermined generator matrix, and z represents a fu... | 11/27/2007 |
| 7298776 | Acquisition of a gated pilot signal with coherent and noncoherent integration Systems and techniques are disclosed wherein a gated pilot signal can be acquired by producing a plurality of product values for each of a first and second signal and a generated signal, coherently combining portions of the product values produced from the first sig... | 11/20/2007 |
| 7295517 | Method and apparatus for channel quality metric generation within a packet-based multicarrier modulation communication system A communication system includes a receiver having a variable gain module and a baseband processor. The baseband processor measures the power of the signal received and derives a variable gain control setting that is inversely proportional to the power of that signal... | 11/13/2007 |
| 7292619 | Method and system for acquiring ultra-wide-bandwidth communications signals using sequential block searches 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 ... | 11/06/2007 |
| 7283580 | Spread spectrum meter reading system utilizing low-speed/high-power frequency hopping A spread spectrum meter reading system enables the use of high power frequency hopping spread spectrum (HPSS) transmissions at both the encoder transmitter and repeater levels of the meter reading system. A plurality of end point encoder transmitter devices are each... | 10/16/2007 |
| 7280608 | Real time dynamic correlator Methods and systems are provided for evaluating electrical characteristics of a transmitter in real time using cross-correlation of a reference signal with a signal transmitted by the transmitter. A code generator is configured to generate reference code and test co... | 10/09/2007 |
| 7272129 | Method and apparatus for synchronizing a node within an ad-hoc communication system A method and apparatus for synchronizing a node (200) within an ad-hoc communication system (100) is described herein. During operation all nodes periodically broadcast a synchronization beacon for other nodes to utilize for synchronization when a coor... | 09/18/2007 |
