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| Number | Title | Issue Date |
| 8184749 | Sphere decoding method applied to multi-input multi-output (MIMO) channel A sphere decoding method applied to a MIMO channel is provided. Multiple constellation points of an nth detection layer corresponding to a MIMO channel matrix are enumerated based on an enumeration rule, and at least one nth sub-set of the n | 05/22/2012 |
| 8184748 | Narrow band receiver An RF receiver comprises a signal processor arranged to perform a method of decoding data contained within a signal that comprises a set of slots, at least one said slot comprising a preamble portion and a payload portion and being transmitted at a predetermined tra... | 05/22/2012 |
| 8179999 | Decoding of blocks in radio communications Apparatuses and methods are disclosed for decoding expected block messages transmitted as radio signals over an air interface in interleaved bursts from a shorter received burst. A method for detecting certain expected messages from received bursts is described, com... | 05/15/2012 |
| 8180000 | GNSS receiver A GNSS receiver including a processing unit adapted to process radio signals transmitted from an active set of signal sources and based thereon produce position/time related data. The signals of the active set are processed in parallel with respect to a real-time si... | 05/15/2012 |
| 8175195 | Method for detecting paths in pulse transmission and a device for carrying out said method The invention relates to method and device for detecting propagation paths in pulse transmission, wherein a received signal comprises pulses on each time symbol. After synchronizing a pulse-based reception, the inventive method consists (A) in determining the arriva... | 05/08/2012 |
| 8170152 | Method and apparatus for multiple signal identification and finding the basis functions of the received signal A method is disclosed to detect a broad class of signals in Gaussian noise using higher order statistics. The method detects a number of different signal types. The signals may be in the base-band or the pass-band, single-carrier or multi-carrier, frequency hopping ... | 05/01/2012 |
| 8170153 | Method for deciding position of mapping symbols, and device and method for modulating binary signal Disclosed is a binary signal modulator for minimizing deterioration of receiving performance caused by phase error. The binary signal modulator receives binary signals, and converts the binary signals into complex symbols according to a predetermined mapping relatio... | 05/01/2012 |
| 8170154 | Chip blanking and processing in SCDMA to mitigate impulse and burst noise and/or distortion A system for mitigating impairment in a communication system includes a delay block, a signal level block, a moving average window block, an impulse noise detection block, and a combiner. The delay block receives and delays each chip of a plurality of chips in a spr... | 05/01/2012 |
| 8165248 | Wireless distance measurement system and wireless terminal A wireless distance measurement system and wireless terminal improve the accuracy of distance measurement when the UWB communication scheme is used. In wireless terminal 200, a route of signals varies between a distance measuring operation and a synchronizati... | 04/24/2012 |
| 8155244 | Demodulation using blind constellation identification for communication signals A receiver and a method to demodulate an unknown signal with an unknown linear modulation is described. The method of one of various embodiments comprises: sampling the unknown signal at a sampling rate to produce a sampled signal; applying carrier frequency offset ... | 04/10/2012 |
| 8155243 | Method for the detection of symbols and associated receiver Method for the detection of symbols by a receiver, each symbol (S0, S1) being transmitted from a transmitter in the form of a succession of pulses (3a, 3b, . . . , 3n; 4a, 4b... | 04/10/2012 |
| 8155245 | Modulation scheme estimation apparatus and method A modulation scheme estimation apparatus includes a receiving unit receiving a first signal, a generation unit generating a plurality of first phase amounts, an acquisition unit acquiring a plurality of multiplication signals by multiplying the first signal by each ... | 04/10/2012 |
| 8149957 | Apparatus and method for interference cancellation in a broadband wireless communication system An apparatus and a method for interference cancellation in a broadband wireless communication system are provided. A receiving apparatus includes an estimator, a channel compensator, and a demodulator. The estimator estimates channels of a desired signal and at leas... | 04/03/2012 |
| 8149959 | Enhancements of soft decoders and detectors on asymmetric channels Systems and methods for enhancing soft decoders and detectors on asymmetric channels are provided. The methods include acquiring log-likelihood ratios (LLRS) for error-correction code (ECC) encoded data symbols, selecting a quality measure function and a quality thr... | 04/03/2012 |
| 8149958 | Low par zero auto-correlation zone sequences for code sequence modulation In one non-limiting exemplary embodiment, a method includes: randomly selecting a set of sequences with each sequence having sequence elements, each sequence element having a frequency selected from constellation points on a unit circle in a complex plane, where the... | 04/03/2012 |
| 8144816 | Programmable signal slicer Disclosed are various embodiments of a programmable slicer in a digital signal processing system and/or software radio system. In one embodiment, a plurality of demodulation schemes and a plurality of channel definitions are stored in a channel allocation table. An ... | 03/27/2012 |
| 8144817 | High-precision signal detection for high-speed receiver In a high-precision signal detection apparatus and method for a high-speed receiver, signal detection occurs asynchronously of the incoming data. A comparison clock is generated by an oscillator whose effective capacitance is varied by a second, lower speed oscillat... | 03/27/2012 |
| 8139690 | Method and transmitter structure reducing ambiguity by repetition rearrangement in the bit domain A method is provided which improves reliability of channel estimation in a digital communication system by reducing the ambiguity in the recognition of received symbols evaluated for the channel estimation. A first plurality of bits is mapped to a modulation state a... | 03/20/2012 |
| 8130876 | Method for receiving a multi-carrier signal, transmission method, corresponding receiver and transmitter The invention concerns a method for receiving a multi-carrier signal of reduced complexity when the number of carriers is not high. The method includes: demodulating the multi-carrier signal; converting a received signal received in binary representation into a moda... | 03/06/2012 |
| 8130875 | Method for estimating channel response in a wireless communications network based on pilot signals The present invention discloses a method for estimating a channel response of data subcarriers in a wireless communications network. The method comprises estimating a first plurality of channel responses of pilot subcarriers carrying pilot signals at the time instan... | 03/06/2012 |
| 8126091 | RDS/RBDS decoder with reliable values A method is provided that contemplates including filtered decode values in an RDS/RBDS output signal. The filtered decode values are generated from reliable values. The reliable values are generated from corresponding received values from each of at least two groups... | 02/28/2012 |
| 8126090 | Channel estimation for a WLAN through increased use of preamble A method and system for improving channel estimation in a wireless device is disclosed. Aspects of the exemplary embodiment include receiving a data packet wirelessly transmitted from a transmitter, the packet including a preamble portion and a data portion containi... | 02/28/2012 |
| 8116408 | Gain control for reduced interframe spacing (RIFS) A method and apparatus is disclosed to recover at least one information payload from a frame and/or to configure one or more reception parameters to receive a future frame to support RIFS. A physical layer device (PHY) receives at least a training sequence embedded ... | 02/14/2012 |
| 8116409 | Method and apparatus for SerDes jitter tolerance improvement Apparatus and methods detect the presence of an isolated pulse in a communications signal, such as a data signal carrying data for a serializer/deserializer (SerDes). An example of an isolated pulse is a “1” pulse preceded and followed by “0” pulses, or a ... | 02/14/2012 |
| 8111786 | Signal converters A signal converter. The signal converter converts an analog inphase signal and an analog quadrature phase signal into a digital baseband inphase signal and a digital baseband quadrature phase signal. The analog inphase signal and the analog quadrature phase signal a... | 02/07/2012 |
| 8111787 | OFDM channel estimation method and apparatus Smaller patterns of regularly-spaced pilot symbols are discerned from a larger pattern of irregularly-spaced pilot symbols transmitted in the time-frequency domain. Accordingly, the irregularly-spaced pilot symbols can be partitioned into at least two different grou... | 02/07/2012 |
| 8102951 | Apparatus and method for controlling iterative decoding in a mobile communication system An apparatus and a method for raising a data throughput by dynamically changing the maximum number of iterative decoding times of an iteratively decodable code in a mobile communication system are provided. The apparatus includes an early stop controller for determi... | 01/24/2012 |
| 8102950 | Method and apparatus for efficient multi-symbol detection Where two or more multi-valued digital data symbols are modulated so that they overlap after passing through a channel, forming a combined signal, a receiver receives the combined signal and forms detection statistics to attempt to recover the symbols. Where forming... | 01/24/2012 |
| 8098771 | Receiver apparatus and method for receiving data units over a channel When transmitting medium access control protocol data units for the high speed downlink shared channel over a plurality of hybrid automatic repeat request processes, one of the processes can be in a retransmission procedure. In this case, stalling of the transmissio... | 01/17/2012 |
| 8098772 | Method for digital wireless communications In a multivalue modulation type with one pilot symbol inserted for every 3 or more symbols, signal points of each one symbol immediately before and after a pilot symbol are modulated using a modulation type different from that for pilot symbols. In this way, it is p... | 01/17/2012 |
| 8094756 | Portable communications device with demodulation correction and related methods A portable communications device communicates based upon constant envelope orthogonal frequency-division multiplexing (CE-OFDM). The portable communications device may include an antenna for receiving a CE-OFDM signal, and a receiver coupled to the antenna. The rece... | 01/10/2012 |
| 8094757 | Apparatus, and associated method, for detecting values of a space-time block code using selective decision-feedback detection A selective decision-feedback detector for the space-time block code which provides both diversity and spatial multiplexing. To detect a received code block of transmitted symbols, the channel matrix is properly preprocessed with the real and imaginary parts decoupl... | 01/10/2012 |
| 8090058 | Wireless communication receiving system and apparatus and method for deciding a transmitted signal corresponding to a received signal thereof A wireless communication receiving system and an apparatus and a method for deciding a transmitted signal corresponding to a received signal thereof are provided. The transmitted signal comprises a plurality of sub-transmitted signals. The system selects at least on... | 01/03/2012 |
| 8085881 | High data rate demodulation system The demodulation process of a wireless data transmission system using multi-level symbols makes use of templates corresponding to each of the possible symbol transitions, so that knowledge of previously decoded symbols can be used to decode the next one. An estimati... | 12/27/2011 |
| 8085882 | Multi-sensor signal fusion for modulation classification of weak signals A multi-sensor signal fusion apparatus is provided for automatic modulation classification of weak unknown signals in non-cooperative communication environment with a more accurate description of the signal. The multi-sensor non-cooperative demodulation device combi... | 12/27/2011 |
| 8081715 | Device and method for sampling based on matched filtering A circuit that reduces the effect of noise in a receiver that includes a plurality of filters and a plurality of samplers. The plurality of filters are configured discreetly filter a digital signal to form a plurality of filtered signals. The plurality of samplers a... | 12/20/2011 |
| 8081716 | Digital broadcasting receiving system and method of processing data A digital broadcasting receiving system and method is disclosed. In the data processing method, a known data sequence is tuned so as to be received, when the known data sequence is periodically inserted in valid data and transmitted. Then, the timing error is detect... | 12/20/2011 |
| 8081718 | Adaptive transmission rate and fragmentation threshold mechanism for local area networks An apparatus for adjusting the transmission bit rate and fragmentation threshold of a wireless station in response to transmission errors is disclosed. In particular, the illustrative embodiment of the present invention is based on a wireless station that employs bo... | 12/20/2011 |
| 8081717 | Delay estimation for a timing advance loop An apparatus includes a radio frequency receiver and a timing adjustment unit that contains at least two channel impulse response estimators. The at least two channel impulse response estimators include an on-time estimator and at least one of an early estimator and... | 12/20/2011 |
| 8077808 | Radio wave receiver and wave clock Disclosed is a radio wave receiver including: a receiving unit to receive a radio wave including a time code in which a plurality of types of data pulse different in pulse width from one another are arranged with a predetermined period of time; a detection circuit t... | 12/13/2011 |
