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7505535 |
Method and apparatus for controlling turbo decoder input
A method and apparatus for effectively controlling data input to a turbo decoder for decoding forward packet data traffic in a 1xEV-DV mobile station (MS) are disclosed. After received code symbols...
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7505536 |
Energy dispersal circuit and receiver
An energy dispersal circuit, which generates a PRBS (Pseudo Random Binary Sequence) and executes an XOR (exclusive-OR) operation with respect to a data signal and the PRBS based on a bit, includes...
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7502429 |
Equalization for traveling wave tube amplifier nonlinearity measurements
A method and system provide the ability to measure a transmission performance characteristic. A signal is received and equalized. The equalized signal is demodulated and an ideal signal is...
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7502418 |
Method and apparatus for joint equalization and decoding of multilevel codes
A method and apparatus are disclosed for joint equalization and decoding of multilevel codes, such as the MLT-3 code, which are transmitted over dispersive channels. The MLT-3 code is treated as a...
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7502411 |
Method and circuit for adaptive equalization of multiple signals in response to a control signal generated from one of the equalized signals
In preferred embodiments, an adaptive equalization circuit including at least two equalization filters (each for equalizing a signal transmitted over a multi-channel serial link) and control...
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7502424 |
Maximizing data rate by adjusting codes and code rates
The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number...
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7502430 |
Coherent averaging for measuring traveling wave tube amplifier nonlinearity
A method and system provide the ability to measure a transmission performance characteristic. A signal is received and demodulated. An ideal signal is generated from the demodulated signal. The...
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7502425 |
Efficient reduced complexity windowed optimal time domain equalizer for discrete multitone-based DSL modems
An algorithm for computing an efficient, reduced complexity, windowed optimal linear time domain equalizer for a dispersive channel comprises the steps of determining a window of maximum energy in...
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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,...
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7499500 |
Data communication system, method and apparatus for communicating a data signal formed of successive data elements
A data communications system for communicating a data signal formed of successive data elements, said system comprising a transmission node; a reception node; and a link providing a data connection...
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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...
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7496157 |
Apparatus for detecting a distance and apparatus for detecting a body
In an apparatus for detecting a distance and improving the SN ratio of received signals, an angular frequency (ω 1 ) of sinusoidal wave signals generated by a sinusoidal wave generator is brought...
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7496149 |
Methods and apparatus for signaling on a differential link
Methods and apparatus are disclosed for transitioning a receiver from a first state to a second state using an in-band signal over a differential serial data link.
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7492292 |
Calibrating an analog component using digital feedback information
In one embodiment, the present invention includes an apparatus having an analog front end to receive a signal from a communication channel physical medium, an analog-to-digital converter (ADC)...
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7492810 |
Method and apparatus for segmented code correlation
A method and an apparatus is disclosed for efficient cross correlation of a plurality of signal vectors. Incoming data is partitioned into several segments and processed according to an algorithm...
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7492844 |
Data processing method, equalizer and receiver
The invention is related to an equalizer comprising, for instance: means for creating a first covariance matrix and defining a Cholesky decomposition matrix of an inverse matrix of the first...
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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...
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7489723 |
System and method for adjusting acquisition phase
A method ( 800 ) is provided of processing a wireless signal ( 105 ) at a receiving device ( 125 ). The method includes: receiving the wireless signal at the receiving device; performing an...
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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...
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7486741 |
Wireless transmitting/receiving device and method thereof
The present invention discloses a wireless transmitting/receiving apparatus for transmitting and receiving large amounts of digital data using a commercial wireless transmitting/receiving...
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7486735 |
Sub-carrier allocation for OFDM
The present invention divides the available sub-carriers in an OFDM symbol window into N groups of sub-carriers wherein each group will be associated with sub-bands. In one embodiment, the...
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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)....
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7483498 |
Frequency content separation using complex frequency shifting converters
A frequency separating system is described utilising tuneable frequency shifting complex converters in which the centre frequency of the band extracted and the bandwidth extracted can be varied...
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7483500 |
Narrowband gain control of receiver with digital post filtering
An Automatic Gain Control (AGC) circuit as used in a digital receiver that utilizes a main loop filter that is of a relatively wide bandwidth. A pre-filter, wideband variance is determined from the...
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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...
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7480349 |
Low IF receiver systems and methods
Embodiments of a low intermediate frequency system and method are disclosed. In one embodiment, among others, a method for operating a receiver is disclosed that comprises receiving a radio...
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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...
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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...
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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...
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7477707 |
Computationally efficient demodulation for differential phase shift keying
A DPSK demodulator demodulates DPSK signals in a computationally efficient manner to reduce the power requirements of the DPSK demodulator. A DPSK signal is received, digitized, converted to its...
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7477713 |
method for providing automatic adaptation to frequency offsets in high speed serial links
Aspects of providing automatic adaptation to frequency offsets in high speed serial links are described. First signals for phase adjusts in a receiver link are adjusted by detecting trends in the...
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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...
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7474713 |
System and method for demodulating multiple QAM signals
A system and method demodulate N QAM signals (N being a positive integer equal to or greater than 1) substantially simultaneously using, for example, one or two oscillators, regardless of how many...
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7475418 |
Digital broadcasting system and method for automatically locating programs after relocation
A broadcasting station transmits a program of continuous sequence of events as a transport stream so as to be received by at least a mobile receiver. The broadcasting station provides the transport...
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7474716 |
Data recovery circuits using oversampling for maverick edge detection/suppression
A data recovery circuit employing an oversampling technique. The incoming serial data stream with jitter is oversampled by means of the multiple phases of a reference clock to produce data samples....
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7474860 |
Optimum sample spacing in over-sampled maximum likelihood sequence estimation receivers
In an over-sampled maximum-likelihood sequence estimation (MLSE) receiver system, the optimal sample spacing is determined for a variety of conditions. In an illustrative implementation, the system...
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7471742 |
Method and construction for space-time codes for AM-PSK constellations
Space-time codes are developed for multi-radii AM-PSK constellations. Further, a “super-unified” space-time code construction is developed that incorporates multi-radii AM-PSK codes with the...
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7471734 |
Space-time transmit diversity scheme for time-dispersive propagation media
This invention extends Alamouti's scheme for wideband TDMA systems; it then works in conjunction with time-domain equalization. In fact, the present invention envisages time-domain DFE or MLSE...
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7471134 |
Mixer with clock resynchronization and method therefor
A mixer ( 114 ) includes a phase clock generator ( 404 ), a latch ( 420 ), and a multiplier ( 118 ). The phase clock generator ( 404 ) provides a plurality of phase clock signals. The latch ( 420 )...
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7471745 |
Method and apparatus for channel quality metric generation within a packet-based multicarrier modulation communication system
A communication system disclosed herein includes a channel quality estimation module that determines the channel quality metric utilizing the preamble portion of the packet only. Data, in such a...
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7469003 |
Method and apparatus for adaptive channel equalization using decision feedback
The equalizer circuit ( 200 ) equalizes the channel prior to despreading thereby restoring the orthogonality of signals that typically exists in the forward link of CDMA systems and thus...
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7469022 |
Methods and apparatus for symmetrical phase-shift keying
Methods and apparatuses employing symmetrical phase-shift keying (SPSK) for data modulation and demodulation. Each symbol in a transmission signal carries n-bit information and is transmitted with...
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7466744 |
Method of receiving spread spectrum signal, and receiver
A receiver for receiving a spread spectrum signal, including mechanisms for receiving a combination signal including a user signal spread with the user's spreading code, mechanisms for correlating...
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7466752 |
Determination of the position of a pulse peak
The invention relates to a method for determining the position x p of a peak of a pulse in a signal received at a receiver. In order to improve the accuracy of this determination, the method...
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7466770 |
Adaptive pulse width discrimination using an asynchronous clock
A system and method are directed to measuring incoming transition widths by counting asynchronous clock pulses, deriving a reference shortest validated width, and using the shortest validated width...
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7467083 |
Data processing apparatus
The present invention relates to a data processing apparatus capable of obtaining high-quality sound data. A tap generation section 121 generates a prediction tap used for a process in a...
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7466776 |
Automatic gain control method and apparatus in communication system having discontinuous transmission mode
An automatic gain control method used in a wireless receiver is disclosed. The method comprise the following steps: Receiving a first frame, amplifying a RF signal corresponding to the first frame...
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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...
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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)...
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7463692 |
Device and method for symbol clock recovery in digital television
A device and method for a symbol recovery in a digital television are disclosed. The device includes a symbol clock recovery device includes a remained phase error remover operating a digital...
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