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7623601 |
Controlling gain in a satellite receiver
In one embodiment, the present invention includes a method for digitally detecting a first signal strength corresponding to a multi-channel spectrum of an incoming radio frequency (RF) spectrum and...
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7623600 |
High speed receive equalizer architecture
Equalization is provided in a high speed communication receiver that includes in various aspects an automatic gain control input stage, a decision feedback equalizer, a clock and data recovery...
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7620136 |
Clock and data recovery circuit having gain control
A clock and data recovery circuit includes a phase detector configured to compare a phase of a data signal to a phase of a sampling clock to provide a phase error signal, a gain stage configured to...
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7616718 |
Wireless receiver apparatus
When carrying out a channel compensation of a data symbol, a channel estimation value of the reference symbol of the frame itself and that of a reference symbol of the preceding frame are used. In...
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7613441 |
Radio wave reception device and radio wave clock
A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit and an AGC circuit....
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7613252 |
Installation of digital data receivers
The invention relates to the installation of a broadcast data receiver or similarly installable apparatus. The apparatus and method of the invention includes a means for taking measurements to...
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7609792 |
Multiple-input multiple-output multichip transceiver with correlated clock signals
A multichip transceiver operates as part of a multiple-input multiple-output communication system. First receiver circuitry on a first integrated circuit processes radio-frequency (RF) signals...
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7606544 |
System for dynamic control of automatic gain control take-over-point and method of operation
A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second...
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7602865 |
Apparatus and method for enhancing a reception rate of a receiver
A system and method is disclosed for enhancing a reception rate for a mobile communication system. A system is provided comprising a demodulator for separating a received signal into an I signal...
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7599677 |
Charge pump circuit having switches
A charge pump circuit that supplies current to an offset current of an output signal for an oscillating circuit is disclosed. The charge pump circuit includes a first switch and a second switch....
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7599675 |
Method and apparatus for receiving radio frequency signals
A frequency conversion receiver comprises a passive mixer, a Low-Noise Amplifier (LNA) and a balun. The low-noise amplifier generates an amplified single-ended signal responsive to a single-ended...
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7596193 |
Variable bandwidth automatic gain control
Provided is automatic gain control (AGC) in which a feedback filter has a parameter that is changed based on information regarding data-packet boundaries. In one representative embodiment, the...
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7596192 |
Automatic gain control method for radio communication mobile station
A signal transmitted from a base station is received by a receiver. The received signal is supplied to an AGC amplifier and is then supplied to a demodulator, so that the signal is demodulated into...
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7593705 |
Radio receiver and gain control method
A radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio...
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7593486 |
Apparatus and method for controlling transmission mode in a MIMO mobile communication system
An apparatus and method for controlling a transmission mode in a MIMO mobile communication system are provided. In a receiver in the MIMO mobile communication system, an error checker checks errors...
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7592936 |
Input distribution determination for denoising
A denoising process or system uses convex optimization to determine characteristics of a clean signal. In one embodiment, a noisy signal that represents a set of symbols can be scanned to determine...
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7587188 |
Radio wave reception device, radio wave clock, and repeater
A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit and an AGC circuit....
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7587183 |
Multi-frequency antenna assemblies with DC switching
According to various exemplary embodiments, apparatus, systems, and methods are disclosed for use with antenna systems operable for receiving first and second signals having respective first and...
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7587013 |
Apparatus for updating gain of loop filter
For updating a gain of a loop filter from a timing error signal, a timing signal estimator generates a current timing signal estimation value from a prior timing error estimation value, a prior...
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7586999 |
Method and receiver for scanning broadcast channels
A method of scanning channels for a digital broadcasting receiver includes: presetting a starting frequency, a time interval, a first threshold, and a second threshold; scanning a channel from the...
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7580690 |
High-frequency receiver having a gain switch controller
A high-frequency receiver capable of improving both an interference-resistant characteristic and reception sensitivity is provided. A gain switch control unit includes: a signal level determination...
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7580482 |
Joint, adaptive control of equalization, synchronization, and gain in a digital communications receiver
Various aspects and embodiments of the present invention derive statistics of received signal quality and use these statistics to jointly control operation of timing recovery, carrier recovery,...
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7573338 |
Quadrature voltage controlled oscillator with automated phase control
A quadrature voltage controlled oscillator includes oscillation circuits for generating in-phase and quadrature-phase oscillation signals that are used to generate in-phase and quadrature-phase...
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7570934 |
Automatic gain control circuit
An automatic gain control circuit is disclosed. The automatic gain control circuit receives a radio frequency signal at an input. The input passes the radio frequency signal to a first gain loop...
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7565125 |
Telecommunications receiver with automatic gain control
A receiver 30 has an adjustable gain control circuit 32 that provides gain control base on the magnitude of the signal at the input of an analog-to-digital converter 22 . The magnitude of a...
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7565124 |
Automatic gain control circuit including power detector
Disclosed herein is an automatic gain control circuit including a power detector. The automatic gain control circuit includes a receiving unit for receiving an RF signal and a gain control unit for...
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7561863 |
Automatic gain control device
A received signal level is detected in each of a wide band, middle band, and narrow band and each detected signal is converted to a digital signal. A DSP 18 determines the enabled/disabled state...
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7555275 |
Systems, methods and devices for dual closed loop modulation controller for nonlinear RF amplifier
In accordance with various exemplary embodiments of the present invention, systems, methods and devices are configured to facilitate RF envelope amplitude control. For example, a RF envelope...
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7555066 |
E8-VSB reception system
An E8-VSB reception system system is provided. A VSB receiver converts a received broadcast signal into a digital baseband signal in synchronization with a first symbol clock, converts a decision...
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7551909 |
CMOS transceiver with dual current path VCO
A dual current path voltage controlled oscillator exhibits both the seamless frequency acquisition and uniform VCO gain reduction while preserving an original operating range and phase locked loop...
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7551696 |
Method and apparatus of detecting ISI/ICSI in an OFDM system
A method for detecting inter-symbol interference (ISI) in an OFDM system includes the steps of computing a first correlation value representing the correlation between a plurality of first signals...
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7551665 |
Ultra wideband receiver architecture using high order Gaussian pulses and method of operation
An ultra wideband (UWB) receiver system operable to process a high order Gaussian pulse includes an integrator group, a correlator circuit and a comparator circuit. The integrator group includes an...
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7548590 |
Method for determining an offset value for a gain of a transmission path, transmission path with adjustable gain, and use of the transmission path
In a transmission path having two discrete-value adjustable amplifiers, a first amplifier is set with a first gain factor and a second amplifier is set with a second gain factor. A signal is then...
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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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7542530 |
Apparatus and method for controlling a digital automatic gain controller in an orthogonal frequency division multiple access communication system
An apparatus and method for controlling a digital AGC in a communication system in which power changes significantly from frame to frame. In the digital AGC controlling apparatus, an SNR estimator...
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7542529 |
Wireless receiving device suppressing occurrence of reception error
An AGC processing portion receives a burst signal of each received frame, and measures its received power level to perform gain control of a variable gain amplifier. Unlike a conventional wireless...
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7536159 |
Automatic gain control using signal and interference power to obtain extended blocking performance
In a radio including analog and digital portions, with at least one A/D Convener between the analog and digital portions, and the selectivity of the radio at least partly implemented in the digital...
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7536114 |
Method and system for converting an optical received pulse train into an electrical output pulse train
The aim of the invention, which concerns a method and a system for converting an optical received pulse train into an electrical output pulse train, is to create a method and an associated circuit...
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7532687 |
Dual stage automatic gain control in an ultra wideband receiver
A method ( 500 ) and an apparatus ( 300 ) are presented for processing a signal in a receiver in accordance with Ultra Wideband (UWB) protocol. The received signal is acquired during a first...
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7532671 |
Gain control method and apparatus
An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses...
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7519139 |
Signal monitoring systems and methods
Systems and methods are disclosed herein to provide signal monitoring techniques. For example, in accordance with an embodiment of the present invention, an integrated circuit includes a phase...
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7515891 |
Programmable gain amplifier (PGA) with AGC in receiver section
A method and apparatus for dynamically controlling a programmable gain amplifier (PGA) to provide a plurality of gain steps thereby providing automatic gain control (AGC) in a receiver intermediate...
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7515654 |
Data slicing circuit using multiple thresholds
A data slicing circuit that receives a demodulated signal including a known data pattern followed by unknown data generates at least two different threshold potentials intermediate between the peak...
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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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7512171 |
System and method for calibrating an analog signal path in an ultra wideband receiver
A system ( 500 ) and method ( 400 ) are presented for calibrating an analog signal path ( 200 ) associated with an Ultra Wideband (UWB) receiver ( 103 ). The analog signal path includes a plurality...
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7505824 |
Audio signal processing apparatus and audio signal processing method
An audio signal processing apparatus and method in which power supplied to a power amplifier is controlled in a wide range from a small output power level to a large output power level in...
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7505696 |
Optical receiver with increased dynamic range
An optical receiver with increased dynamic range includes a photodetector, a photodetector biasing network, an amplifier and a post-distortion network. The post-distortion network compensates for...
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7505537 |
System and method for controlling gain and timing phase in a presence of a first least mean square filter using a second adaptive filter
A system for controlling gain and timing phase includes a variable gain amplifier (VGA) responsive to an input signal, and an analog-to-digital converter (ADC) responsive to a VGA output. A first...
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7505510 |
System and method for interference cancellation with multi-stage multi-user detection
Reduction of multiple access interference, in one example for asynchronous CDMA systems using long codes. In one aspect, parallel interference cancellation (PIC) implements a decoupled estimate,...
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7499682 |
Dual voltage regulator for a supply voltage controlled power amplifier in a closed power control loop
A supply voltage controlled power amplifier that comprises a power amplifier, a closed power control feedback loop configured to generate a power control signal, and a dual voltage regulator...
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