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| Application No. | Application Title | Issue Date |
| 20110228819 | METHOD AND APPARATUS FOR SWITCHING OPERATING MODES OF A RECEIVER In a wireless communication system, a method and apparatus switches operating modes of a receiver receiving data and operating in a first mode. The method comprises determining whether a criteria is met to switch the operating mode of the receiver. The operating mode of... | 09/22/2011 |
| 20110080936 | ORTHOGONAL SPREAD-SPECTRUM WAVEFORM GENERATION WITH NON-CONTIGUOUS SPECTRAL OCCUPANCY FOR USE IN CDMA COMMUNICATIONS The technology in this application spreads a signal over an available discontinuous spectrum, such as a radio frequency band, so that the spread signal only occupies the non-contiguous spectrum. In this way, CDMA transmission and reception can be used in a fragmented or... | 04/07/2011 |
| 20100290505 | CODE CONVERTING APPARATUS, RECEIVER, AND CODE CONVERTING METHOD A code converting apparatus is designed to estimate the incoming time and the like of a signal modulated by a spreading sequence composed of m elements in a set A having n kinds of symbols as elements accurately. A symbol sequence memory section 102 stores a conv... | 11/18/2010 |
| 20100008405 | Reconfigurable Signal Processing Scheme A method of ameliorating channel effects present in a signal received through a channel, wherein the signal conveys at least first and second information streams and the method comprises the steps of determining from the first stream activation of the second stream and ... | 01/14/2010 |
| 20080198828 | Multiuser detector for variable spreading factors A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The multiuser receiver is compatible with ZF-BLE, MMSE, decorrelating detectors and t... | 08/21/2008 |
| 20080095278 | APPARATUS AND METHOD FOR REDUCING COMPLEXITY OF MATCHED FILTER An apparatus for determining multipath correlations among a search range of input data, and a method thereof. The multipath searcher comprises a pseudo noise (PN) code generator, a correlator, and a data combiner. The PN code generator generates a first PN code correspo... | 04/24/2008 |
| 20080075151 | RECEIVER, RECEIVER FOR POSITIONING SYSTEM USING THE SAME, AND POSITIONING METHOD An invention for estimating the first path of an arrival signal by a method and device with a simple structure and lower power consumption. In this method, the nominal pulse repetition frequency or its integer multiple are A/D converted at a frequency less than the mult... | 03/27/2008 |
| 20080069190 | RECEIVER OF A COMA SYSTEM WITH A PATH ALIGNMENT CIRCUIT A receiver of a CDMA system, receiving a signal transmitted through a multi-path channel, with a path alignment circuit is disclosed. The path alignment circuit has a pack-based memory device serially inputting samples of low over-sampling rate than that required by the... | 03/20/2008 |
| 20070291826 | Spread spectrum receiver for restoring received symbols with a symbol detection window adjusted in optimal and a method therefor A spread spectrum receiver has less symbol detection error due to noise. Correlation values between an input signal and spread code sequences are produced by correlators correspondingly provided for the spread code sequences. When an optimum window width symbol detectio... | 12/20/2007 |
| 20070286264 | Interference reduction in spread spectrum receivers The specification and drawings present a new method, system, apparatus and software product for reducing a narrowband or continuous wave (CW) interference of weak radio frequency signals (e.g., code modulated) in the spread spectrum receivers. A tuneable digital band-re... | 12/13/2007 |
| 20070286265 | Reception Of A Spread Spectrum Modulated Signal The present invention relates to a receiver for receiving a spread spectrum modulated signal, comprising a sampler for forming samples of a received signal, at least one reference code block for generating at least first and second reference codes, and a correlation blo... | 12/13/2007 |
| 20070268961 | MULTI-BAND TV TUNER AND METHOD THEREOF A direct conversion multi-band TV tuner includes: a plurality of RF (radio frequency) paths for processing the RF signal and for generating a plurality of processed RF signals, respectively; and a TSC (tri-state chopper) based quadrature frequency converter for receivin... | 11/22/2007 |
| 20070237266 | Efficient Detection of Predetermined Sequences Hypothesis tests, such as maximum likelihood detections, are executed on symbol sequences received by, for example, a user equipment (UE) in a communication system. The hypothesis tester checks a received sequence against a group of predetermined sequences that possibly... | 10/11/2007 |
| 20070223567 | PREAMBLE FOR SYNCHRONIZATION It is proposed a receiver comprising receiving means for receiving a preamble signal (26) that comprises a long PN sequence (33) being a combination of a plurality of short PN sequences (29, 30, 31,32), wherein said short PN sequences (29, 30, 31... | 09/27/2007 |
| 20070195867 | System for direct acquisition of received signals Signal processing architectures for direct acquisition of spread spectrum signals using long codes. Techniques are described for achieving a high of parallelism, employing code matched filter banks and other hardware sharing. In one embodiment, upper and lower sidebands... | 08/23/2007 |
| 20070182556 | SYSTEM AND METHOD FOR TRACKING ASSETS WITHIN A MONITORED ENVIRONMENT A system associates change in the state of an asset to an event trigger within a monitored environment. This environment includes a plurality of assets and a tag transmitter positioned on each asset and operative for transmitting a wireless RE signal based on an event t... | 08/09/2007 |
| 20070133663 | Data Packet Transmission for Channel-Sharing Collocated Wireless Devices Interference between collocated wireless devices sharing the same RF channel is avoided or minimized by a new header format provided for the first data packet in an RF transmission. By inclusion of an invalid pulse in the header of each isolated data packet, an FM recei... | 06/14/2007 |
| 20070133664 | Digital receiver device for DSSS-encoded signals A device for decoding a direct sequence spread spectrum-encoded binary message includes a sampler that captures at least one sequence of binary samples corresponding to one bit of the transmitted message. The captured sequence of samples are applied to a filter matched ... | 06/14/2007 |
| 20070104258 | Wireless transmitter and receiver for use in an ultra-wideband direct spread pulse communication system A wireless transmitter and receiver increase a desired/unwanted (D/U) ratio of a correlation output without increasing the number of data in an ultra-wideband direct spread pulse communication system for transmitting and receiving two series of data through different sp... | 05/10/2007 |
| 20070098056 | Digital receiver device based on an input comparator A digital processing device is at the input of a radio frequency receiver chain, suited to a transmission system using a direct sequence spectrum spread, comprising analog-to-digital conversion means (ADC) performing an undersampling of a signal received, resulting in a... | 05/03/2007 |
| 20070071076 | Data input device of semiconductor memory device A data input device of a semiconductor memory device can reduce unnecessary current consumption occurring according to a setting of a bandwidth. The data input device includes: a bandwidth signal input part for receiving a bandwidth signal for setting a data bandwidth t... | 03/29/2007 |
| 20070058701 | Method for detecting the orthogonal code cdma signal The present invention discloses a method for detecting orthogonal code CDMA signal implemented mainly through the following steps: estimating the total power of interference to the multi-path signals; performing matched filtering on the multi-path signals and performing... | 03/15/2007 |
| 20070058699 | Bit synchronization method and system for a GPS A bit synchronization method and system for a GPS, which receives a satellite signal sent by a satellite to accordingly produce a synchronous signal. Each data bit of the satellite signal consists of N CA-codes. A data buffer receives and stores the data bits of the sat... | 03/15/2007 |
| 20070036122 | Joint Space-Time Optimum Filters (JSTOF) for Interference Cancellation A wireless communications device may include a wireless transmitter and a wireless receiver. The wireless receiver may include a filter for reducing co-channel interference within a communications receiver. The filter may include a multi-channel, space-time filter circu... | 02/15/2007 |
| 20070036210 | Joint Space-Time Optimum Filters (JSTOF) with at Least One Antenna, at Least One Channel, and Joint Filter Weight and CIR Estimation A mobile wireless communications device may include a portable housing, at least one virtual antenna carried by the portable housing, and a space-time filter circuit carried by the portable housing for filtering a communications signal received by the at least one virtu... | 02/15/2007 |
| 20070014338 | BASE STATION FOR CARRIER OFFSET RECOVERY A base station for carrier offset recovery. An adaptive matched filter produces a filtered signal. A rake receiver provides relative path values of multipath components. A mixer generates channel impulse response estimates. A channel despreader despreads the filtered si... | 01/18/2007 |
| 20060291601 | Systems and methods for high-efficiency transmission of information through narrowband channels Systems and methods for transmitting information at very high data rates through narrowband communication channels are provided. The systems and methods involve modulating a message signal with a novel return-to-zero, abrupt phase modulation technique and filtering the ... | 12/28/2006 |
| 20060268923 | Joint Space-Time Optimum Filters (JSTOF) for Interference Cancellation A filter for reducing co-channel interference within a communications receiver may include a multi-channel, space-time filter circuit that filters n signal parts that have been split from a communications signal by jointly estimating space-time filter weights and multi-... | 11/30/2006 |
| 20060262837 | Acquisition matched filter for W-CDMA systems providing frequency offset robustness A system and method for acquiring a transmitted spread-spectrum signal uses a matched filter configuration that is preferably employed as a Stage 2 filter in the second phase of an initial signal acquisition procedure performed in the receiver. In operation, a Stage 1 f... | 11/23/2006 |
| 20060256845 | Receiver device suited to a transmission system using a direct sequence spread spectrum A receiver device for a modulated signal, suited in particular to a transmission system using a binary carrier phase modulation by means of a binary message on which a direct sequence spread spectrum operation has been carried out, this device comprising a first analog ... | 11/16/2006 |
| 20060256844 | WIRELESS COMMUNICATION DEVICE A wireless communication device is provided. The wireless communication device executes digital processing for a received UWB signal with use of an A/D converter having an adequate sample rate and resolution, and thus can obtain precise reception timing information. Sin... | 11/16/2006 |
| 20060245481 | MATCHED FILTER FOR SCALABLE SPREAD SPECTRUM COMMUNICATIONS SYSTEMS A spread spectrum communications system using long, scalable PN sequences to achieve variable communication rates using a low-complexity and scalable matched filter architecture to provide a large processing gain, robust recovery of multiple devices in long reach, high ... | 11/02/2006 |
| 20060233226 | Method and apparatus for cell search in a W-CDMA system A technique is provided for correcting frequency offset during the cell search process in a W-CDMA system. A plurality of control words are defined, and with each of the control words, correlating the received slot signals with the primary synchronization code to genera... | 10/19/2006 |
| 20060233221 | Multi-antenna solution for mobile handset A mobile terminal with multi-antenna (200) based on CDMA, comprises a plurality of groups of radio frequency signal processing modules (202), for transforming received multi-channel radio frequency signals based on CDMA to multi-channel baseband signals; a... | 10/19/2006 |
| 20060209936 | Matched filter and spread spectrum receiver A matched filter for implementing the correlation of an input signal and a reference signal. The matched filter comprises N parallel M-sample long shift registers for receiving an equal number of input signals at the sampling frequency of the input signal, wherein N≧<... | 09/21/2006 |
| 20060176983 | Wireless communications device providing enhanced block equalization and related methods A wireless communications device may include a wireless receiver receiving wireless signals having alternating known and unknown symbol portions over a channel, and a demodulator systolic array connected to the wireless receiver. The demodulator systolic array may inclu... | 08/10/2006 |
| 20060176941 | Wireless communications device performing block equalization based upon prior, current and/or future autocorrelation matrix estimates and related methods A wireless communications device may include a wireless receiver for receiving signals comprising alternating known and unknown symbol portions, and a demodulator connected thereto. The demodulator may include: a channel estimation module for generating respective chann... | 08/10/2006 |
| 20060171448 | Circuit and method for rake training during acquisition A method is provided for training a rake finger (200). In this method the rake finger receives a data signal including a plurality of signal components having a plurality of signal phase values, respectively. (620). The rake finger then sets a current acqu... | 08/03/2006 |
| 20060120441 | Receiver With the objective of enhancing receiving performance of a receiver with respect to pulse signals spread by spread codes, the receiver comprises an RF front-end section which performs amplification, an AD converter section which AD-converts signals outputted from the RF... | 06/08/2006 |
| 20060098719 | Adaptive code-tracking receiver for direct-sequence code-division multiple access (CDMA) communications over multipath fading channels and method for signal processing in a rake receiver In one embodiment, a rake receiver for a spread-spectrum (SS) signal has a plurality of rake fingers corresponding to different multipath components of the SS signal and sampling circuitry generating a stream of samples corresponding to the SS signal. A first rake finge... | 05/11/2006 |
