Quotables
"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7499504 | Method for determining multiple-input multiple-output (MIMO) channel coefficient using polarity-inverted training signals in an orthogonal frequency division multiplexed (OFDM) multicarrier system Embodiments of system and method for determining channel coefficients in a wireless network are generally described herein. Other embodiments may be described and claimed. In some embodiments, channel coefficients of a multiple-input multiple-output (MIMO) channel m... | 03/03/2009 |
| 7496154 | Power and area efficient receiver circuit having constant hysteresis for noise rejection A hysteresis receiver containing two inverters and a logic controller. The inverters are implemented with threshold voltages equaling Vil and Vih, which together define the hysteresis window. The inverters receive the input signal and generate a respective inverted ... | 02/24/2009 |
| 7489739 | Method and apparatus for data recovery A method for recovering data includes oversampling an input data signal to provide sample sets, and storing a plurality of sample sets in addressable memory. The sample sets are processed, using sequential logic to make determinations of respective samples suitable ... | 02/10/2009 |
| 7486746 | Clock and data recovery with extended integration cycles Clock and data recovery circuitry includes an interleaved sampler having multiple integrators, where at least one of the integrators integrates the input data for at least two unit intervals (UIs). One embodiment includes a four-way interleaved sampler, where each i... | 02/03/2009 |
| 7486745 | Method for improving multipath mitigator low path separation error behavior A process is disclosed for discriminating between received ranging signals, such as GPS, GNSS, and radar signals, which arrive via a single path and those which arrive via multiple paths. The number of paths is also estimated. This is accomplished by comparing the r... | 02/03/2009 |
| 7483496 | Method and system for providing long and short block length low density parity check (LDPC) codes An approach is provided for generating Low Density Parity Check (LDPC) codes. An LDPC encoder generates a LDPC code with an outer Bose Chaudhuri Hocquenghem (BCH) code. For 1/3 rate, the relevant parameters are as follows: q=120, nldpc=64,800, kldpc | 01/27/2009 |
| 7480347 | Analog front-end having built-in equalization and applications thereof An analog front-end having built-in equalization includes a control module and a tunable gain stage. The control module is operably coupled to provide a frequency response setting based on a channel response of a channel providing high-speed serial data to the analo... | 01/20/2009 |
| 7477704 | Digital signal detection for high speed signaling systems Methods and apparatuses for detecting digital signals in high speed signaling systems. In at least one embodiment, at least one received input signal is combined with a plurality of predetermined reference signals according to a plurality of prior digital signal out... | 01/13/2009 |
| 7477705 | Method for demodulating a digital signal based on an estimate of multipath propagation impairment, and an associated receiver A method for demodulating a received digitally modulated signal subjected to multipath propagation impairment includes estimating the multipath propagation impairment of the received digitally modulated signal using a channel estimator, and estimating at least one s... | 01/13/2009 |
| 7474710 | Amplitude and phase matching for layered modulation reception An apparatus and method for receiving layered modulation signals is disclosed. A typical method includes receiving a layered modulation signal including an upper layer signal and a lower layer signal, demodulating and decoding the upper layer signal from the receive... | 01/06/2009 |
| 7471743 | Systems and methods for high-efficiency transmission of information through narrowband channels Systems and method for receiving information through narrowband communication channels are provided. The systems and method involve a satellite-based system for receiving a signal, including a receiver filter. The receiver filter is designed based on fractal modelin... | 12/30/2008 |
| 7471744 | Efficient space-time adaptive processing (STAP) filter for global positioning system (GPS) receivers A system for efficiently filtering interfering signals in a front end of a GPS receiver is disclosed. Such interfering signals can emanate from friendly, as well as unfriendly, sources. One embodiment includes a GPS receiver with a space-time adaptive processing (ST... | 12/30/2008 |
| 7463699 | Methods of automatically detecting spectrum inversion and related terrestrial digital video broadcasting receivers DVB-T receivers and methods may provide automatic detection of spectrum inversion using continual pilot correlation. A DVB-T receiver may include a demodulator, a fast Fourier transformation (FFT) unit, and a spectrum inversion detector. The demodulator may demodula... | 12/09/2008 |
| 7463700 | Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification A wireless communication system (10). The system comprises a user station (12). The user station comprises despreading circuitry (22) for receiving and despreading a plurality of slots received from at least a first transmit antenna (A12 | 12/09/2008 |
| 7460617 | Wireless communication method and apparatus for performing post-detection constellation correction A method and apparatus for correcting the phase and gain of data associated with a constellation pattern of a plurality of received individual symbols. Each symbol is divided into real and imaginary symbol components. The signs of the real and imaginary symbol compo... | 12/02/2008 |
| 7460615 | Spatial and time multiplexing of multi-band signals A multi-band receiver for use with satellite ranging systems is provided. The receiver has a simplified architecture in which input signals of various frequencies are multiplexed together to form a single composite analog signal. In accordance with one embodiment of... | 12/02/2008 |
| 7460616 | Method of blind channel searching and estimation using a fast Fourier transform mechanism A FFT-based blind channel searching and estimation method, comprising the steps of waiting for a power-on signal from a DVB-S receiver, judging whether a complex of automatic gain control signals of the receiver have converged, producing a complex of data samples by... | 12/02/2008 |
| 7457373 | Receiver circuit for a push-pull transmission method and method for receiver-end signal processing in push-pull transmission methods A receiver circuit contains first and second inputs for feeding in first and second input signals, and an output generating an output signal dependent on the input signals. A detector circuit has a first and second signal detectors connected to the first and second ... | 11/25/2008 |
| 7453955 | Receiving method and receiver Baseband input units input baseband received signals. An initial weight data setting unit sets weighting coefficients to be utilized in the interval of a training signal as initial weighting coefficients. A gap compensating unit compensates control weighting coeffic... | 11/18/2008 |
| 7450663 | Interpolation for use in channel estimation A method for the estimation of the transfer function of a transmission channel in a receiving system of UMTS type envisages the computation of a plurality of channel coefficients, included among known channel coefficients corresponding to pilot symbols, through the ... | 11/11/2008 |
| 7450664 | Selection of transmission alphabet sets for short message services A receiver for text messages in a network includes a means to receive and demodulate a signal. A message type detector determines whether or not the message is a text message. If it is, a header decoder looks at the header of the text message for encoding informatio... | 11/11/2008 |
| 7447276 | Receiver and method for blind adaptive thresholding using noise estimator A receiver estimates noise power and establishes a false alarm detector threshold. The receiver includes an antenna array having a plurality of antenna subarrays on which multiple communications signals are received over a communications channel. At least one channe... | 11/04/2008 |
| 7447275 | IF FSK receiver In one embodiment, the present invention is a low-power, and high performance receiver including an IF demodulator for high data rate, frequency modulated systems, such as Bluetooth. The IF demodulator is implemented in analog domain for simplicity and lower power c... | 11/04/2008 |
| 7443926 | Apparatus for inputting clock signal and data signals of small amplitude level with start timing of inputting clock signal ahead of that of inputting data signals In an apparatus including a shift register adapted to pass a start signal therethrough in synchronization with a clock signal of a large amplitude level to sequentially generate a plurality of latch signals, a data register adapted to latch sequential data signals o... | 10/28/2008 |
| 7443927 | Signal detector A signal detector comprises a signal translator, a data signal detector, a clock signal detector and an inputting control circuit for detecting abnormal clock and data signals. The signal translator respectively converts differential data signals and differential cl... | 10/28/2008 |
| 7444128 | Method of estimating a high frequency carrier signal A method of estimating the carrier frequency of a signal is disclosed. The method comprising the steps of initializing a time average vector to zero, selecting a user-selectable time segment to divide a received signal into. A signal is received, and divided into th... | 10/28/2008 |
| 7443909 | Weighted autocorrelation method for downlink CDMA LMMSE equalizers Receiving downlink CDMA signals in a fast-fading environment is facilitated at higher receiver velocities by updating the block-adaptive linear minimum mean square error (LMMSE) downlink CDMA equalizer. The autocorrelation matrix of the observed data is updated by p... | 10/28/2008 |
| 7440521 | Method of normalization of forward metric (alpha) and reverse metric (beta) in a map decoder In a normalization process, overflow occurring in limited size registers, holding the alpha or beta values in a map decoder, may be overcome by subtracting a constant value from all of the alpha or beta values when they reach a limit. Because subtracting a constant ... | 10/21/2008 |
| 7440495 | FPGA having AC coupling on I/O pins with an effective bypass of the AC coupling DC balance is obtained in an integrated circuit (IC) having I/O pins with AC coupling by effectively bypassing the AC coupling. The DC balance is accomplished by mixing in a known, low frequency mix signal or carrier in a circuit external to the IC and then digitall... | 10/21/2008 |
| 7440497 | Serial data link using decision feedback equalization A multi-phase adaptive decision feedback equalizer minimizes post-cursor inter-symbol interference in a current data bit based on values of subsequent data bits in a data communication system. In one form, the receiver includes a plurality of modules each having a r... | 10/21/2008 |
| 7440516 | Apparatus and method for receiving digital multimedia broadcasting in a wireless terminal Provided are an apparatus and method for receiving digital multimedia broadcasting (DMB) signals in a wireless terminal. The apparatus includes a first antenna for receiving a satellite DMB signal and a first terrestrial DMB signal, a second antenna for receiving a ... | 10/21/2008 |
| 7440489 | Method and apparatus for selective demodulation and decoding of communications signals A spread spectrum signal is processed by correlating the spread spectrum signal with a spreading sequence at a first plurality of correlation times to produce a first plurality of time-offset correlations. The first plurality of time-offset correlations is processed... | 10/21/2008 |
| 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 |
| 7436289 | Remote keyless entry system with two modes of demodulation A remote signaling receiver system includes a receiver that operates in two different modes of demodulation to accommodate different types of signals from different types of transmitting devices. A first demodulator, preferably an ASK demodulator, is adapted to proc... | 10/14/2008 |
| 7436905 | Receiver device, communications device, wireless LAN device, power control method for a receiver device, power control program for a receiver device, and storage medium A receiver device in accordance with the present invention (for example, wireless LAN device) includes: a radio frequency signal processor section converting an incoming radio frequency signal to a lower frequency; an RSSI circuit (reception strength sensor section)... | 10/14/2008 |
| 7436906 | Synchronous detector with high accuracy in detecting synchronization and a method therefor In a symbol timing detector, a correlator calculates a correlation value for a received radio packet signal. A peak detector compares the correlation value with a threshold value to be used, and sends, upon a correlation value detected larger than the threshold valu... | 10/14/2008 |
| 7436907 | Analog compression of GPS C/A signal to audio bandwidth The present invention discloses analog methods and circuits for compression of the GPS C/A signal to audio bandwidths to improve TTFF times, as well as decreasing auto correlation errors in systems that employ the methods and devices disclosed. ... | 10/14/2008 |
| 7436904 | Data recovery apparatus and method for decreasing data recovery error in a high-speed serial link Provided are a data recovery apparatus and method for recovering (parallel) data from serial data received via a high-speed serial link with a reduced data recovery error rate. The data recovery apparatus includes a clock signal generating circuit and a data recover... | 10/14/2008 |
| 7436914 | Methods and apparatus for providing television signals A method for providing television signals is disclosed including the steps of: receiving signals utilizing a first antenna and a second antenna; generating a first signal quality indicator corresponding to signals from the first antenna; generating a second signal q... | 10/14/2008 |
| 7433427 | Enhanced denoising system utilizing incremental parsing An apparatus for operating on a received signal that includes a noise-free signal that has been corrupted by a channel is disclosed. A memory stores a channel corruption function specifying the probability that a symbol having a value I was converted to a symbol hav... | 10/07/2008 |
