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US20120134392 CROSS CORRELATION DETERMINATION METHOD AND CROSS CORRELATION DETERMINATION DEVICE  
A cross correlation determination method includes: executing a first decoding of decoding a navigation message included in a received satellite signal using a first replica code and a second...
US20130142221 HIGH PERFORMANCE WINDOW SEARCHER FOR CELL MEASUREMENT  
Disclosed are various embodiments involving a window searcher for cell measurement. A window search is configurable and scalable as to a number of scrambling codes to be searched in parallel over...
US20090147835 RECEIVER AND TRANSMITTER FOR USE IN A SATELLITE NAVIGATION SYSTEM  
A receiver is provided for use with a satellite navigation system comprising a constellation of multiple satellites. Each satellite transmits a signal incorporating a spreading code. The receiver...
US20140328378 EFFICIENT DE-SPREADING  
Satellite communication systems utilize spreading by repetition techniques, including block repetition, to enable operation at low signal to noise conditions. A carrier frequency offset between a...
US20130044789 METHOD AND APPARATUS FOR CONFIGURING LOW POWER NETWORK  
A transmitter for Electric Field Communication (EFC) is provided. The transmitter includes a preamble code generator, a preamble symbol generator, and a transmission electrode. The preamble code...
US20140161158 JOINT SEQUENCE ESTIMATION OF SYMBOL AND PHASE WITH HIGH TOLERANCE OF NONLINEARITY  
A method and system for a sequence estimation in a receiver, such as for use when receiving a sample of a received inter-symbol correlated (ISC) signal corresponding to a transmitted vector of L...
US20070189363 REDUCED COMPLEXITY INTERFERENCE SUPPRESSION FOR WIRELESS COMMUNICATIONS  
The computational complexity required for interference suppression in the reception of wireless communications from multiple users is reduced by sharing information among the users. In some...
US20070076788 Bit synchronization for weak navigational satellite signals  
Methods to achieve data bit synchronization from weak navigational satellite signals are based on a maximum likelihood criterion. The bit synchronization technique may be implemented by...
US20090189808 GNSS DATA/PILOT CORRELATOR AND CODE GENERATOR THEREOF  
A correlator for a GNSS receiver and a code generator used in the correlator as well as a correlation method are disclosed. In the GNSS, each satellite transmits a data signal and a pilot signal....
US20130343435 ACTIVATED CODE CHANNEL DETECTION METHOD AND DEVICE  
The present invention provides an activated code channel detection method. The method includes: performing de-scrambling and de-spreading on a received signal according to a node corresponding to...
US20100254438 LOW COMPLEXITY ACQUISITION METHOD FOR GNSS  
A low complexity acquisition method and a receiver implemented such a method are disclosed. In the present invention, a cyclical shifted-and-combined (CSC) code is generated by intercepting...
US20130329770 Apparatus and Method for Detecting Spectrum Inversion  
The present invention relates to a spectrum inversion detection apparatus which includes a differential correlation value computing portion, utilized to use a present and previous time axial...
US20060285581 System and method for acquisition of signals  
A system for processing a received signal having at least one code applied thereto, said received signal having a frequency, said system comprising: first correlator circuitry arranged to...
US20100046589 GPS M-CODE RECEIVER TRACKING SYSTEM  
An m-code GPS receiver receives m-code GPS communication signals having a multimodal autocorrelation, using an m-code mode identifier unambiguously determining a mode value of one of the m-code...
US20130089121 METHOD OF DEMODULATING MDCM SIGNAL USING HARD DECISION AND METHOD OF DEMODULATING MDCM SIGNAL USING SOFT DECISION  
A method of demodulating a modified dual carrier modulation (MDCM) signal using hard decision includes generating real symbol vector candidates and imaginary symbol vector candidates which...
US20130272344 METHOD AND APPARATUS FOR PACKET ACQUISITION  
Certain aspects of the present disclosure relate to a method for acquisition of a received spread spectrum signal transmitted over a wired or wireless medium.
US20150117501 METHOD OF DETECTING INTERFERENCE IN A SATELLITE RADIO-NAVIGATION SIGNAL BASED ON THE MONITORING OF A TEMPORAL CORRELATION COEFFICIENT  
Method of detecting interference in a satellite radio-navigation signal determines the temporal position for which the correlation between the signal and a local spreading code offset by the...
US20110013675 METHOD OF RECEPTION AND RECEIVER FOR A RADIO NAVIGATION SIGNAL MODULATED BY A CBOC OR TMBOC SPREAD WAVEFORM  
To receive a radio navigation signal modulated by a modulation waveform, the modulation waveform comprising a component BOC(n1,m) and a component BOC(n2,m), n2 being strictly less than n1, a...
US20070046536 Fast fourier transform with down sampling based navigational satellite signal tracking  
A method and device to track navigational satellite signals, are claimed. In this invention, a combination of down-sampling and frequency domain transformation are used to track the navigational...
US20140169412 System and Method for Low Density Spreading Modulation Detection  
In one embodiment, a method for blindly detecting low density spreading (LDS) active signatures including receiving, by a first node from a second node, a signal and decorrelating the signal in...
US20080063033 Method for Covariance Matrix Update  
A method and apparatus for updating a square root matrix of a covariance matrix when sample sets are added to or removed from a received signal. When a sample set is added to the received signal,...
US20070242733 Method of Validating the Detection of a Correlation Peak by a Satellite Positioning System Receiver  
The present invention relates to a method of validating the detection of a correlation peak between a signal transmitted by a plurality of navigation satellites and received by an RNSS satellite...
US20130034123 Coherent Interference Detection  
A method for detecting coherent interference includes the steps of: (a) receiving a signal at a first frequency, (b) forming a set of cross-correlation results by at least cross-correlating the...
US20070058699 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...
US20130251005 METHOD FOR ACQUIRING SATELLITE SIGNAL AND SATELLITE SIGNAL RECEIVING DEVICE  
Methods and apparatuses for acquiring a satellite signal includes generating a differential code using first, second and third segments of a satellite signal received from a positioning satellite,...
US20110129003 METHOD FOR ACQUIRING SATELLITE SIGNAL AND SATELLITE SIGNAL RECEIVING DEVICE  
Methods and apparatuses for acquiring a satellite signal includes generating a differential code using first, second and third segments of a satellite signal received from a positioning satellite,...
US20080205494 UNBIASED CODE PHASE DISCRIMINATOR  
A feedback control law steers a reference phase that tracks the phase of a received code sequence. The reference phase clocks a track-reference signal consisting of a series of correlation...
US20070211793 Multipath error estimation in satellite navigation receivers  
The invention presented in this disclosure gives methods to estimate and compensate for the multi-path in a typical navigational or spread spectrum receiver. The multi-path delay is estimated...
US20130177045 METHOD OF CAPTURING SATELLITE SIGNAL AND DEVICE FOR CAPTURING SATELLITE SIGNAL  
Every k (k≧2) sampling values of sampling values in a time series obtained by sampling reception signal from GPS satellite are selected, and addition-subtraction of the selected k sampling values...
US20090016414 Ultratight coupling prefilter detection block  
An observation lock detector block receives I&Q correlations and generates error measurement vectors, each including phase, frequency, code, pseudorange, and covariance residual estimates, and...
US20140254637 DIRECT SEQUENCE SPREAD SPECTRUM SIGNAL RECEIVING DEVICE AND METHOD  
A direct-sequence spread spectrum signal receiving device may comprise a receiver unit, a chip sequence generating unit, a correlation unit, and comparison unit. The receiver unit may extract a...
US20100316094 FLEXIBLE AND IN-BAND SIGNALING FOR NESTED PREAMBLE  
A multi input multi output (MIMO) receiver is disclosed for transmitting and receiving packets having a preamble format of a packet of information and having a short training sequence (STS), a...
US20140198830 METHOD AND APPARATUS FOR TIMING SYNCHRONIZATION AT SUB-SAMPLED RATE FOR SUB-SAMPLED WIDEBAND SYSTEMS  
A method of timing synchronization in sub-band based ultra wideband systems, includes obtaining a coarse estimate of an offset in a time domain at a sub-sampled rate, and obtaining a fine estimate...
US20150117500 METHOD OF DETECTING INTERFERENCE IN A SATELLITE RADIO-NAVIGATION SIGNAL BY DETECTING A DEFORMATION OF THE CORRELATION FUNCTION  
Method of detecting interference in a satellite radio-navigation signal, characterized in that it comprises the following steps: Calculating an item of information representative of the slope of...
US20080285632 DECODING OF THE OVERHEAD CHANNELS OF THE GEO SATELLITE REVERSE LINK  
A power efficient technique is used to demodulate the coded overhead channels of a GEO satellite uplink. A coherent receiver used in a wireless communication system is able to determine the...
US20100309958 METHOD AND APPARATUS FOR CONTINUOUS PHASE MODULATION PREAMBLE ENCODING AND DECODING  
Certain aspects of the present disclosure relate to a method for generating single carrier signals with spread-spectrum coded preambles using constant envelope 2-CPM modulation for transmission in...
US20090185603 Differentiated Linear Equalization at Communication Base Stations  
The teachings presented herein improve the processing of individual signals of interest included in a received composite signal by computing combining weights and/or signal quality estimates for...
US20110150047 METHOD AND SYSTEM FOR EFFICIENT DSSS FFT PROCESSING EMPLOYING PRIME FACTOR DECOMPOSITION  
A direct-sequence spread spectrum (DSSS) receiver may be operable to process signal samples in frequency domain utilizing a prime factor fast Fourier transform (FFT) circuit and a pseudorandom...
US20120033716 TIME-SETTING IN SATELLITE POSITIONING SYSTEM RECEIVERS  
Techniques are provided which may be implemented using various methods and/or apparatuses in a receiver and/or other like device to determine an SPS time using SPS signals based on a correlation...
US20090285269 PHY Preamble Format for Wireless Communication System  
A system and method of extracting data from data packets transmitted over a wireless network includes receiving a data packet having a preamble portion and a payload portion. The preamble portion...
US20130156073 RECONFIGURABLE CORRELATOR FOR A NAVIGATION SYSTEM  
Systems and methods are provided for a correlator system. The system includes a plurality of numerically controlled oscillators and a multiplier configured to receive an input stream representing...
US20090122839 SCRAMBLING CODES FOR SECONDARY SYNCHRONIZATION CODES IN WIRELESS COMMUNICATION SYSTEMS  
Systems and methodologies are described that facilitate employing a scrambling code from a set of scrambling codes, which is indexed by primary synchronization codes (PSCs), to scramble or...
US20080192810 Clear Channel Assessment (Cca) for Uwb Communications System  
Clear channel assessment (CCA) is a very important issue in Ultra-Wideband (UWB) systems. An effective CCA mechanism will have a large impact on the overall throughput of the communications...
US20070098055 SYSTEM AND METHOD FOR DETECTING MULTIPATH EFFECTS IN A GPS RECEIVER  
A multipath component in a GPS signal received is detected when an asymmetry exists in the correlation function of the received si/gnal and the expected GPS signal. The multipath component is also...
US20090052506 Acquisition of a Code Modulated Signal  
The invention relates to the acquisition of a code modulated signal, wherein a first set of correlation results for correlations between the code modulated signal and a first replica code with...
US20070195866 METHOD AND DEVICE FOR REDUCING CROSS-CORRELATION FALSE ALARMS IN CDMA AND OTHER WIRELESS NETWORKS  
A method and device for combating cross-correlation false alarms by introducing code diversity in the correlation process in which the search code may be diversified by the use of code staggering...
US20090268788 SYSTEM AND/OR METHOD FOR DETECTING MULTI-TONE JAMMING  
The subject matter disclosed herein relates to a system and method for processing a signal received from a satellite positioning system (SPS) in the presence of a multi-tone jammer. In one...
US20090196329 Spreading Codes for A Satellite Navigation System  
One embodiment of the invention provides a method of creating a set of secondary spreading codes for use in a satellite navigation system comprising a constellation of satellites. Each satellite...
US20070071075 Apparatus and method for detecting fast feedback information in multi-cell base station in a broadband wireless communication system  
An apparatus and method for detecting a feedback signal in a multi-cell or multi-sector sector BS in a broadband wireless communication system are provided. A demodulator correlates each tile...
US20070211791 Coherent processing using composite codes  
A coherent processor having replica generator, a plurality of correlators, a combiner and a tracking loop. The replica generator generates a composite-reference signal having a replica of the...
Matches 1 - 50 out of 265 1 2 3 4 5 6 >