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7630943 |
Method and system for indoor geolocation using an impulse response fingerprinting technique
A system and method for predicting the location of a transmitter in an indoor zone of interest, including fixed receiver for receiving a signal from the transmitter, the receiver deriving a...
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7623593 |
Data receiving apparatus capable of compensating for reduced timing margin caused by inter-symbol interference and method thereof
Provided are a data receiving apparatus that can determine data by adjusting a reference level for determining a logic value of inputted data based on Inter-Symbol Interference in a data signal...
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7620121 |
DC balance compensation for AC-coupled circuits
A receiver has a first input port and a second input port both coupled to a differential amplifier through first and second input capacitors. A bias circuit coupled to the core side of the first...
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7620099 |
WCDMA terminal baseband processing module having multi-path scanner module
A baseband processing module according to the present invention includes a multi-path scanner module. The multi-path scanner module is operable to receive timing and scrambling code information...
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7613400 |
Multi-level optical data communication circuit
A driver circuit is coupled to an optical waveguide transmitter. The driver circuit has a current generator that is in series with the transmitter, and a current robbing circuit is coupled to the...
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7606487 |
Distortion measurement in optical communication systems
The distortion component of an optical signal received from an optical transmission system, such as an all-optical system, subject to noise and amplitude distortion components, can be evaluated by...
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7602866 |
Signal receiver devices and methods
A method/apparatus is provided that detects impairment in a received signal and employs the structure in the receiver that is designed for that purpose. Preferably, the method/apparatus detects the...
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7602860 |
Method and system for decoding multilevel signals
A multilevel optical receiver can comprise a plurality of comparators that generally correspond with the number of levels in a multilevel data stream. Each comparator can be individually controlled...
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7574146 |
Pattern-dependent error counts for use in correcting operational parameters in an optical receiver
An optical transmission network includes an optical transmitter photonic integrated circuit (TxPIC) chip, utilized in an optical transmitter and has a plurality of monolithic modulated sources...
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7570715 |
Digital signal receiving circuit
A delayed peak detector detects a peak level of an input signal IN at timing lagged behind a peak detector, and a peak difference detector detects a peak difference PLD between a delayed peak level...
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7570714 |
Data transfer apparatus for low voltage differential signaling
A data transfer apparatus is composed of a transmitter and a receiver. The transmitter includes an output buffer developing a differential signal in response to a data signal, and an amplitude...
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7561643 |
DC offset correction in mobile communication system
A method of simultaneously determining a DC offset and a channel impulse response from a received signal in a mobile communication system. The received signal Y comprising a set of training...
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7558338 |
Method and apparatus for I/Q imbalance estimation
An apparatus and method for estimating an I/Q imbalance parameter of a receiver and a transmitter. An apparatus for estimating an I/Q imbalance parameter of a receiver, the apparatus comprising: a...
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7555079 |
Method and corresponding arrangement for DC offset compensation using channel estimation
A method of determining a DC offset in a communications signal received via a communications channel, the communications signal comprising a sequence of training symbols. The method comprises...
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7545892 |
Method and circuit for controlling the input signal for a contactless transponder
Method for controlling an input signal for a contactless transponder, in which a signal strength of an amplitude-modulated input signal is controlled to a nominal value, and identification of a...
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7542527 |
Frequency offset correction circuit device
A semiconductor circuit device is provided which can attain more stable operations against noise in a data communication system without increasing the power consumption of an overall system,...
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7515653 |
Digital broadcasting receiver, driving method thereof, and self-diagnosis method thereof
A digital broadcasting receiver, a driving method, and a self-diagnosis method thereof, are provided. The digital broadcasting receiver includes: a digital demodulator for demodulating a digital...
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7499505 |
Trellis decoding with finite constellation boundaries
System and method for improving trellis decoding in communications systems with finite constellation boundaries. A preferred embodiment for a received point of a tone when the tone represents a...
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7492834 |
Regenerating apparatus, regenerating method, and receiver
A regenerating apparatus includes an identification circuit, an error correcting circuit, an abnormality detecting circuit which generates an alarm when a predetermined abnormal operation is...
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7489740 |
Receiver with baseline wander compensation
A receiver with baseline wander compensation is applicable to a digital communication system. The receiver includes an Analog-to-Digital Converter (ADC), a slicer, a threshold value detector, a...
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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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7466765 |
Receiver for high bitrate binary signals
A receiver for high bitrate binary signals contains a soft decision circuit with three parallel deciders coupled to a 2:1 multiplexer. The three deciders have different threshold values and...
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7460792 |
Receiving circuit and electronic apparatus for optical communication
In an optical communication-use receiving circuit of the present invention, the pulse width of the received pulse which is a binary signal corresponding to the signal optical pulse is specified by...
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7453388 |
Slice voltage compensation
An integrated circuit includes an internal resistance (R INT ) and a compensation circuit coupled to adjust a slice level specified by a slice signal to a compensated slice level according to a...
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7433431 |
Staggered AGC with digitally controlled VGA
A method of and device for automatic gain control (AGC) incorporates digitally controlled variable gain amplifiers (VGAs). An AGC circuit comprises multiple AGC stages, where each of the stages...
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7424230 |
Digital transmission system
This digital transmission system is provided with a transmitting apparatus that transmits digital data signals and a receiving apparatus that receives the digital data signals transmitted over a...
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7421250 |
Radio frequency integrated circuit
A radio frequency (RF) integrated circuit (IC) includes a local oscillation module, analog radio receiver, analog radio transmitter, digital receiver module, digital transmitter module, and digital...
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7418212 |
Electrical detection of optical symbols
A system and method for detecting digital symbols carried in a received optical signal. The system comprises a functional element operative to receive a stream of samples of an electrical signal...
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7403059 |
Baseline wandering correction device and method
A baseline wandering correction device for correcting baseline wandering of signals at a first output terminal and a second output terminal of a receiver includes: a control circuit for outputting...
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7388933 |
Wireless communication system having adaptive threshold for timing deviation measurement and method
A system and method of wireless communication determines received signal timing deviation which is used to generate a timing advance for adjusting wireless transmit receive unit (WTRU)...
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7386067 |
Frequency offset cancellation circuit for data determination in wireless communications
A demodulating semiconductor integrated circuit device used in a wireless communication system of an FM-modulation scheme, wherein a circuit for canceling a frequency offset is made of a digital...
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7369781 |
Burst mode optical receiver considering characteristic of extinction ratio of received optical signal
Provided is a burst mode optical receiver considering a characteristic of an extinction ratio of a received optical signal is provided. By using a peak detector considering a characteristic of an...
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7340186 |
Discrimination phase margin monitor circuit, transmitting/receiving device and communication system
The discrimination phase margin monitor circuit ( 10 ) of the present invention comprises a first discrimination circuit ( 11 and 12 ) discriminating an input data signal using a clock signal...
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7336744 |
Digital baseband receiver including a cross-talk compensation module for suppressing interference between real and imaginary signal component paths
A digital baseband (DBB) radio frequency (RF) receiver used for receiving and processing a wireless communication signal. The DBB RF receiver includes a demodulator, an analog to digital converter...
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7333568 |
Data slicer capable of calibrating current mismatch
A data slicer includes a comparator coupled with an input signal and a reference signal for generating a sliced signal, a waveform generator for generating a calibration signal, a pulse extension...
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7321637 |
Data slice control device and control method
A data slice control device comprises a monotone increase detection circuit for detecting a monotone increase point of a data signal, a monotone decrease detection circuit for detecting a monotone...
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7315586 |
Adaptive searcher threshold setting using consecutive ISCP measurements
Dynamic adjustment of searcher thresholds used to detect propagation paths of a communications signal transmitted from a transmitter to the base band receiver. Interference signal code power (ISCP)...
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7313206 |
Modified branch metrics for processing soft decisions to account for phase noise impact on cluster variance
Modified branch metrics for processing bit-soft decisions to account for phase noise impact on cluster variance (CV). The present invention is able to partition a modulation scheme's constellation...
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7308045 |
Binarizing circuit, wireless communication device, and binarizing method
An example wireless communication device is provided with a binarizing circuit which precisely carries out binarization even if a level of an input signal is kept substantially consistent for a...
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7305027 |
Receiver and the compensation method therefor
This invention discloses a receiver and a signal compensation method therefor. An adaptive equalizer and a baseline wander compensator are provided on the front end of the receiver to improve the...
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7289556 |
Apparatus and method for compensating signal attenuation based on an equalizer
An apparatus and a method for compensating signal attenuation based on an equalizer. The apparatus Includes an auto gain controller, an analog-to-digital converter and an auto-gain-control mapping...
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7277688 |
DC offset correction for very low intermediate frequency receiver
A wireless receiver includes a local oscillator, a mixer, a band pass filter, a DC offset determination module, a DC offset correction module, a subtraction module, and a down converter. The local...
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7277633 |
Receiving error rate control device
A reception error rate controller in which the settling time can be shortened at the time of feedback control by controlling the quality of a received signal when the error rate is low. The...
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7257383 |
Method and system for improving dynamic range for communication systems using upstream analog information
The receiver is provided which comprises a mixer, a low pass filter coupled to the mixer and a plurality of gain controllers serially coupled to an output of the low pass filter (LPF). A plurality...
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7257178 |
Base band circuit of receiver and low cut-off frequency control method
A base band circuit of a receiver and a low cut-off frequency control means can quickly converge transition state due to gain fluctuation with setting a low cut-off frequency of a high-pass filter...
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7254345 |
Receiver and receiving method capable of detecting an eye aperture size formed by reception data signals
In a receiver operable in response to a data signal, an eye aperture size is detected along a time axis by an eye aperture detection circuit and is controlled by a control circuit so that it...
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7254194 |
Automatic gain control for communication receivers
A communication receiver amplifies a pulse-amplitude-modulated (PAM) signal representing an integer-valued sequence of first data elements (D 1 ) with an adjustable first gain (G 1 ) and digitizes...
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7248653 |
Low power and high linearity receivers with reactively biased front ends
A radio frequency receiver includes an amplifier and a detector that produces a bias control signal based on a signal environment. A bias level of the amplifier is set according to the bias control...
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7248640 |
System and method for providing slicer level adaption
The present invention relates in general to a method, apparatus, and article of manufacture for providing high-speed digital communications through a communications channel. In one aspect, the...
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7236750 |
Techniques for correcting for phase and amplitude offsets in a MIMO radio device
Techniques to correct for phase and amplitude mismatches in a radio device in order to maintain channel symmetry when communicating with another device using MIMO radio communication techniques....
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