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| Application No. | Application Title | Issue Date |
| 20120128101 | METHOD AND APPARATUS FOR ROBUST AND HIGH EFFICIENCY FEC FRAME HEADER RECOVERY Methods and apparatus for FEC frame header detection are provided, suitable for use in a DVB-C2 receiver. A first method comprises demodulating with a quadrature phase shift keying (QPSK) demapper, followed by correlation and symmetry measures for detection of a robust ... | 05/24/2012 |
| 20120081693 | SYSTEM FOR DEMODULATING A SIGNAL A demodulating system (100) for demodulating a phase-modulated input signal (Si) comprises:
| 04/05/2012 |
| 20120027130 | INTERFERENCE-WEIGHTED COMMUNICATION SIGNAL PROCESSING SYSTEMS AND METHODS A level of interference affecting signal components of received communication signals is estimated and used to weight the signal components. The signal components in a each of a number of groups of signal components are weighted based on respective interference estimate... | 02/02/2012 |
| 20120027006 | SYSTEM AND METHOD FOR JOINT VOICE AND DATA TRANSMISSION A method for multiplexing voice and data communication using a communications network is presented. In the method, at least one voice bit from a voice bit stream is retrieved, and at least one data bit from at least one data bit stream is retrieved. When the voice bit s... | 02/02/2012 |
| 20110268229 | SYSTEM AND METHOD FOR DECODING AUTOMATIC IDENTIFICATION SYSTEM SIGNALS Various embodiments are described herein for a system and method of detecting Automatic Identification System (AIS) signals in space and decoding these signals. In one aspect, a system for performing this function is described which includes a receiver configured to rec... | 11/03/2011 |
| 20110206144 | RECEIVER AND TRANSMISSION/RECEPTION SYSTEM In a wireless receiver, a “variance” of an intermediate output signal of a demodulation section is calculated by a variance calculation section, and the calculated variance is used as a signal quality indicator which indicates the degree of goodness of a receiving c... | 08/25/2011 |
| 20110188613 | Compact pulse shaping for QM-MSK and PAM/QAM reception Compact pulse shape partial response (CPS PR) signaling is developed for trellis based signals like QM-MSK, and for PAM/QAM type signals to improve the performance to bandwidth tradeoff. Compact pulse shaped signals are partial response signals that employ a very short ... | 08/04/2011 |
| 20110182329 | DEVICE AND METHOD FOR DISTORTION-ROBUST DECODING A device for decoding code symbols which are interfered with a distortion during a predetermined distortion time interval includes a reliability information generator to provide reliability information based on the code symbols and a decoder to decode the code symbols i... | 07/28/2011 |
| 20110158353 | ORTHOGONALITY DETECTOR, AND QUADRATURE DEMODULATOR AND SAMPLING QUADRATURE DEMODULATOR USING DETECTOR THEREOF To detect phase mismatches between in-phase and quadrature signals of a quadrature demodulator. The phase mismatches can be detected using the signals obtained by removing high frequency components of output of a multiplier by a low pass filter, the output being the pro... | 06/30/2011 |
| 20110158352 | APPARATUS AND METHOD OF MULTI-STAGE HIGH BIT PER SYMBOL ANALOG DEMODULATION A multi-stage demodulation circuit receives a given communication signal modulated by a superposition of at least a first modulation scheme and a second modulation scheme, the circuit having a first demodulation stage that demodulates the received communication signal a... | 06/30/2011 |
| 20110142156 | MULTI-CHANNEL SIGNALING A system includes a transmitter device that includes a transmitter baseband controller to segment a bit stream into a first segment, a second segment, and a third segment, and generate a first baseband signal that includes the first segment, a second baseband signal tha... | 06/16/2011 |
| 20110134972 | ACTIVE ANTENNA, BASE STATION, METHOD FOR REFRESHING AMPLITUDES AND PHASES, AND METHOD FOR PROCESSING SIGNALS An active antenna, a base station, a method for refreshing the amplitude and phase, and a signal processing method are disclosed to simplify the structure of a phase shifter and guarantee the reliability of the phase shifter. The active antenna or the base station inclu... | 06/09/2011 |
| 20110129008 | Methods, Apparatuses, System and Related Computer Program Product for Cell Type Detection It is disclosed a method comprising including transmitting indication information indicating network cells of a first type different from network cells of a second type, the transmitting comprising including a) broadcasting control information, the indication informatio... | 06/02/2011 |
| 20110090991 | METHOD AND APPARATUS FOR PHASE REFERENCE TRACKING OF DIGITAL PHASE MODULATED SIGNALS IN THE RECEIVER The present invention discloses a method and apparatus to provide, effectively and robustly, a phase reference in phase-domain for digital phase-modulated signals. Not only the first-order but also higher order PLLs are delineated for robust and fast tracking of frequen... | 04/21/2011 |
| 20110064165 | DEMODULATION APPARATUS AND METHOD FOR RFID READER IN PASSIVE RFID ENVIRONMENT A demodulation apparatus for a Radio Frequency Identification (RFID) reader includes: a direct current (DC) offset cancellation unit for cancelling DC-offset noise contained in a PSK-modulated or ASK-modulated subcarrier tag signal from the tag signal when the tag signa... | 03/17/2011 |
| 20110064166 | SYSTEM AND METHOD FOR PERFORMING BLIND IQ-IMBALANCE ESTIMATION AND COMPENSATION An IQ-imbalance of a complex receiver can be corrected by compensating the in-phase signal component and the quadrature-phase signal component produced by the complex receiver for an IQ-imbalance estimated by analyzing the in-phase signal component and the quadrature-ph... | 03/17/2011 |
| 20110038400 | WIRELESS APPARATUS AND SIGNAL PROCESSING METHOD A wireless apparatus includes: an A/D converter which samples an in-phase signal component and a quadrature signal component from a quadrature-modulated signal of analog form alternately; a digital quadrature demodulation unit which applies digital quadrature demodulati... | 02/17/2011 |
| 20110033003 | GENERALIZED FREQUENCY MODULATION A receiver may comprise a complex mixer for converting the modulated signal to a complex modulated signal comprising a first in-phase component and a first quadrature component. The receiver may further comprise a digital demodulator. The digital demodulator may compris... | 02/10/2011 |
| 20110007844 | APPARATUS FOR FREQUENCY MODULATING AND DEMODULATING OF FREQUENCY SELECTIVE BASEBAND WITH GAIN OF FREQUENCY DIVERSITY, AND APPARATUS FOR TRANSMITTING AND RECEIVING USING FOR THIS Provided are a frequency modulation/demodulation apparatus using a frequency selective baseband and a transmitting/receiving apparatus using the same. In a frequency selective baseband transmission technique or an FS-CDMA technique, a transmission rate is controlled acc... | 01/13/2011 |
| 20100329392 | Apparatus and Method for IQ Imbalance Calibration in a Receiver A method and apparatus is disclosed to compensate for an in-phase/quadrature phase (I/Q) imbalance in a communications receiver. The communications receiver may utilize information gained from observing one or more observational interferers to adjust one or more sequenc... | 12/30/2010 |
| 20100310013 | SIGNAL RECEIVING APPARATUS, METHOD, PROGRAM AND SYSTEM A signal receiving apparatus includes: an acquisition section configured to acquire an Orthogonal Frequency Division Multiplexing signal resulting from combination of a plurality of signals transmitted by a plurality of signal transmitting apparatus by adoption of an Or... | 12/09/2010 |
| 20100310012 | METHODS AND APPARATUSES FOR ADAPTIVE CLOCK RECONSTRUCTION AND DECODING IN AUDIO FREQUENCY COMMUNICATION The invention relates to methods for adaptive clock reconstruction and decoding in audio frequency. The method includes the steps of: receiving a modulated signal, wherein the modulated signal is modulated by RC-FSK (Return to Carrier Frequency Shifting Keying); perform... | 12/09/2010 |
| 20100303173 | CIRCUIT FOR DEMODULATING A PHASE MODULATED SIGNAL A demodulator is provided for demodulating a phase-modulated data signal. The demodulator includes a phase frequency detector to output a voltage representing a phase difference between a received phase-modulated data signal and a reference clock signal. The voltage is ... | 12/02/2010 |
| 20100284480 | METHOD AND APPARATUS FOR CHANNEL QUALITY MEASUREMENTS A method and apparatus are provided for measuring channel quality over which has been transmitted a sequence of symbols produced by encoding and constellation mapping a source data element sequence. The method includes receiving a sequence of received symbols over the c... | 11/11/2010 |
| 20100266067 | COMPENSATOR UNIT AND COMPENSATION METHOD FOR I/Q IMBALANCE ERRORS A compensator unit compensates frequency-dependent imbalance between a sampled in-phase and a sampled quadrature phase signal. The compensator unit includes a delay channel (381) and a filter channel (382). The delay channel (381) delays an intermed... | 10/21/2010 |
| 20100260281 | JOINT CHANNEL ESTIMATION AND MODULATION DETECTION A receiver comprises a demodulator to estimate channel impulse response and timing synchronization information for the received signal and to select a modulation technique for demodulating the received signal; and a channel decoder to produce a binary sequence from the ... | 10/14/2010 |
| 20100247113 | PHASE ERROR CORRECTION IN A COHERENT RECEIVER A method and apparatus for correcting of phase errors in a coherent optical receiver are disclosed. Embodiments include a method for calculating a phase error between in-phase and quadrature-phase component signals, multiplying the phase error by one of the component si... | 09/30/2010 |
| 20100239050 | METHOD AND SYSTEM FOR SIGNAL PHASE VARIATION DETECTION IN COMMUNICATION SYSTEMS Aspects of a method and system for signal phase variation detection in communication systems are presented. Aspects of the system may enable detection of phase change between a current received symbol, and one or more previous received symbols. Based on the phase change... | 09/23/2010 |
| 20100202566 | System and method for improved spur reduction in direct RF receiver architectures Improved spur reduction architectures that improve linearity in direct radio frequency (RF) receiver architectures. Non-uniform sampling in the form of sampling clock phase (or frequency) modulation is used to induce phase (or frequency) modulation on signals that are b... | 08/12/2010 |
| 20100202567 | REAL-TIME DIGITAL QUADRATURE DEMODULATION METHOD AND DEVICE FOR ULTRASONIC IMAGING SYSTEM A real-time digital quadrature demodulation method and device for the ultrasonic imaging system are disclosed in this invention. In addition to a multiplying step and a filtering step, the method further comprises a sine and cosine table generating step for generating t... | 08/12/2010 |
| 20100195771 | RECEIVER AND RECEIVING SYSTEM When the first switching circuit outputs the output signal of the first selection filter, the receiver switches the output signal of the second switching circuit to the output signal of the delay compensator, and when the first switching circuit outputs the output signa... | 08/05/2010 |
| 20100195768 | VITERBI EQUALIZATION WITH DETECTION OF THE NEAREST CONSTELLATION POINTS FOR STAGE REDUCTION The device is used for decoding convolution-encoded reception symbols. In this context, transmission data are modulated with a modulation scheme to form symbols, which are encoded with a transmission filter to form convolution-encoded transmission symbols. A convolution... | 08/05/2010 |
| 20100183095 | RECEPTION SYSTEM FOR SUMMATION OF PHASED ANTENNA SIGNALS A diversity antenna system and method comprising a plurality of antennas, a plurality of switches and a plurality of phase shifters, wherein the switches and the antennas are selectively opened and closed or switched on an off to achieve equiphasing. This system separat... | 07/22/2010 |
| 20100183096 | EFFICIENT MULTI-SYMBOL DEINTERLEAVER Embodiments disclosed herein address the need in the art for an efficient multi-symbol deinterleaver. In one aspect, a plurality of memory banks are deployed to receive and simultaneously store a plurality of values, such as soft decision values determined from a modula... | 07/22/2010 |
| 20100172441 | FREQUENCY TRANSLATION MODULE FREQUENCY LIMITING AMPLIFIER A system for processing signal communications between a frequency translation module and an integrated receiver decoder. According to an exemplary embodiment, the decoder and the frequency translation module comprise a signal processing apparatus comprising an input for... | 07/08/2010 |
| 20100150268 | Log Likelihood Ratio Arithmetic CircuitTransmission Apparatus, Log Likelihood Ratio Arithmetic Method, and Program [Problems] To realize a log likelihood ratio calculation performed at a higher speed while the circuit size and the power consumption are reduced, regardless of the multilevel number of a modulation method. [Means for Solving the Problems] ... | 06/17/2010 |
| 20100150271 | MODULATED CLOCK, AN IC INCLUDING THE MODULATED CLOCK AND A METHOD OF PROVIDING A MODULATED CLOCK SIGNAL FOR POWER CONTROL A modulated clock, a method of providing a modulated clock signal, an integrated circuit including a modulated clock and a library of cells including a modulated clock. In one embodiment, the modulated clock includes (1) a clock controller configured to generate a digit... | 06/17/2010 |
| 20100142650 | Apparatus and Method for Adaptive Rotation Angle Control, Wireless Apparatus, and Computer Program An adaptive rotation angle control apparatus of this invention includes a communication quality approximating equation storage portion which stores a communication quality approximating equation including as variables reception quality information, amplitude fluctuation... | 06/10/2010 |
| 20100135437 | SIGNAL RECEIVING APPARATUS AND METHOD FOR WIRELESS COMMUNICATION SYSTEM USING MULTIPLE ANTENNAS Provided are a receiving apparatus and method for a wireless communication system using multiple antennas. A receiving method for a wireless communication system using multiple paths, the receiving method comprising: receiving signals through a predetermined number of m... | 06/03/2010 |
| 20100119012 | PROGRAMMABLE WIDE BAND DIGITAL RECEIVER/TRANSMITTER A receiver uses a wideband intermediate frequency (IF) in the analog domain and performs low IF down-conversion in the digital domain, using low-power, high-speed, high resolution analog-to-digital converters. The receiver can be integrated into an integrated circuit as... | 05/13/2010 |
