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Class 455/226.1 - Measuring or testing of receiver


Subclass of Class 455 - Telecommunications
Definition: Subject matter comprising means which, in use, determines
No. of patents: 771
Last issue date: 05/08/2012


1                      
NumberTitleIssue Date
8175561Automatic optimization of RF receiver interference performance
A method and apparatus for optimization of RF receiver interference performance in a mobile phone operating in a TDMA communications system is disclosed. The battery supply voltage ripple of the battery of the mobile phone is measured and it is determining when the ...
05/08/2012
8170513Data detection and demodulation for wireless communication systems
Techniques for detecting and demodulating data transmissions in wireless communication systems. In one aspect, a decision-directed detector detects for data transmissions in a received signal by utilizing received data symbols as well as received pilot symbols. The ...
05/01/2012
8165548Receiving apparatus
A receiving apparatus includes an analog demodulation unit, a digital demodulation/decoding unit, a delay unit, a reception state detecting unit, first/second processing units, and a mixing processing unit. The analog demodulation unit demodulates a first audio sign...
04/24/2012
8160527Automatic gain control in multi-carrier wireless systems
Methods and apparatus for providing automatic gain control (AGC) for received multi-carrier signals are disclosed. A receiver circuit comprises a common analog signal path, which includes an analog variable-gain circuit and an analog-to-digital converter, and furthe...
04/17/2012
8150351Receiver with tuner front end using tracking filters and calibration
A broadband tuner includes a tracking filter with calibration to compensate for component errors and drift. The filters use off-die inductors that are preferably within a system-in-package (SIP) with other critical tuner components, which produces a highly integrate...
04/03/2012
8121571Method for second intercept point calibration based on opportunistic reception
A transceiver device that performs an intercept point calibration using signal interferers is described. The signal interferers include at least self-generated signal interferers or opportunistic signal interferers in surrounding areas. Due to non-linearity in the t...
02/21/2012
8116710Continuous sequential scatterer estimation
The present invention uses newly received signal samples to update previously determined scatterer parameters, and therefore, reduces the processing effort required for characterizing scattering objects in a wireless channel. Broadly, the present invention determine...
02/14/2012
8116709Frequency measuring broadband digital receiver
A microwave receiver measures the frequency F of a microwave signal in a band of frequencies whose maximum frequency is Fmax. The receiver has N frequency measuring digital stages E1, E2, . . . Ek, . . . EN providing N ambiguous frequency measurements ...
02/14/2012
8107908Selective fast image rejection
Selective fast image rejection. Selective down conversion processing is performed on a received signal based on the signal strength of that received signal. As few as two possible down conversion frequencies can be employed so that the received signal is down conver...
01/31/2012
8107907Information processing apparatus, method, and program
Disclosed herein is an information processing apparatus including: judging means for judging whether a receiving device for receiving a signal amplified by an amplifying circuit which amplifies a supplied signal has a good reception state or not; and control means f...
01/31/2012
8095100Receiver with sigma-delta structure
There is provided a receiver with a sigma-delta structure, the receiver including: a low noise amplifier amplifying a received signal according to a detection signal; a mixer converting an RF signal of the low noise amplifier into an IF signal; a sigma-delta A/D con...
01/10/2012
8086199Sharing AGC loop between demodulator and spectrum analysis system
Systems and methods for sharing an AGC loop between a wireless data demodulator and a spectrum analysis module that operates simultaneously with the data demodulator. In one embodiment, a predetermined hold time prevents the AGC loop from changing gain too often, th...
12/27/2011
8055227Dynamic tuning between different receivers background
Methods of operating a mobile television receiver. The methods comprise the steps of gathering data concerning parameters of an input signal, determining whether the signal is at a level, and performing additional functions if it is determined that the signal is at ...
11/08/2011
8055228Received signal strength indicator self-calibrating gain of limiter
A received signal strength indicator according to an aspect of the invention may include a gain calibration section including a calibration limiter, a calibration load unit and a comparison and adjustment unit. The calibration load unit is connected to output termin...
11/08/2011
8055226Frequency response correction for a receiver having a frequency translation device
A method of correcting the frequency response of an RF receiver having a frequency translation device and a fixed IF frequency section uses calibration data representing frequency responses over a wide frequency range for multiple center frequencies. The calibration...
11/08/2011
8050641Limiting the power consumption of a wireless electronic system
In at least some disclosed embodiments, a wireless electronic system includes a decoder module coupled to a processor. The decoder module is configured to send a signal to the processor based on a less than completely acquired burst of data. The less than completely...
11/01/2011
8036615Portable simplified image display apparatus and receiving system
A portable simplified image display apparatus and a receiving system are provided, which can sensuously know the state of received strength of radio signals transmitted from a body-insertable apparatus, in either case of before examination or during examination. A v...
10/11/2011
8036617Radio frequency (RF) signal generator and method for providing test signals for testing multiple RF signal receivers
A test signal interface and method for allowing sharing of multiple test signal generators among multiple devices under test (DUTs). Digital baseband test signals generated by the multiple test signal generators are combined and converted to a baseband analog signal...
10/11/2011
8036616Noise parameter determination method
According to an aspect of the present description a method for determining selected parameters of a noise characterization equation which describes a noise performance of a device as a function of a controllable variable of the device is provided. The method include...
10/11/2011
8014741Signal quality estimation and control system
A signal quality estimation and control system for controlling a signal having noise. The system may include a signal strength determination system having an input configured to receive the signal and an output configured to output information indicative of the stre...
09/06/2011
8005448Radio frequency duplex filter for removing transmit signals from a receive path
The present invention is an RF duplex filter that is used to remove transmit signals from the receive path of a full duplex transceiver. The RF duplex filter includes a notch filter for blocking signals at a transmit frequency and a bandpass filter for enhancing sig...
08/23/2011
7965993Method for polarization correction in user equipment
A method and device for compensation of received signal components at a user equipment (UE) used for receiving signal components from a radio base station (RBS). The signal components have at least a first and a second polarization orientation, respectively. The int...
06/21/2011
7912433Method and apparatus for generating channel quality information for wireless communication
A method and apparatus for generating channel quality information, such as may be used for transmit link adaptation, provide different operating modes, such as a first mode that may be used when propagation channel estimates are not reliable, and a second mode that ...
03/22/2011
7890073Method and system for detecting carrier wave dropout
A method for detecting carrier wave dropout may include but is not limited to: a) receiving a carrier wave; b) determining a carrier wave power; c) applying a Kalman filter to the carrier wave power; d) detecting a decrease in carrier wave power; and e) delaying a t...
02/15/2011
7890072Wireless communication apparatus for estimating(C/I) ratio using a variable bandwidth filter
A wireless communication apparatus includes a mechanism for estimating carrier-to-interference (C/I) ratio using a variable bandwidth filter. More particularly, the wireless communication apparatus includes a channel equalization unit coupled to a C/I ratio estimati...
02/15/2011
7877071Unified STTD/CLTD dedicated pilot processing
Apparatus and method to provide unified STTD/CLTD dedicated pilot processing in a wireless receiver. The technique allows different set of parameters to be introduced to a same processing module to process STTD and CLTD diversity signals to recover a pilot signal. I...
01/25/2011
7865159Repeater rise-over-thermal (RoT) value calibration
An RF switch is used in the signal path to an amplifier, for example between a receiving antenna and an amplifier. The switch is used to alternately connect the amplifier between a normal signal source for the amplifier and a fixed load for calibration. The power di...
01/04/2011
7860472Receiver circuit and receiver circuit testing method
A delay means, in response to a delay control signal, performs delay control of the phase of a clock input signal, and outputs it. A selector means, during a speed test, selects a clock input signal from among a clock input signal from a delay unit, and the input si...
12/28/2010
7848723Information processing apparatus and method, program and recording medium
An information processing apparatus executes processing based on received information conforming to IEEE 802.11n, and includes: an incident angle measuring unit acquiring a received signal and measuring an incident angle of the received signal's radio wave; a reliab...
12/07/2010
7801502Method for implementing continuous radio frequency (RF) alignment in advanced electronic warfare (EW) signal stimulation systems
A method of providing an integrated approach to automated system alignment is set forth, which may include in an exemplary embodiment: providing amplifier compression alignment, (which may include characterizing and/or compensating for a parasitic effect); providing...
09/21/2010
7787845UE measurement scheduling based on measurement bandwidth
The method and apparatus described herein uses variable length snapshot periods to determine signal strength measurements. A mobile station determines the measurement bandwidth associated with a base station, and sets the snapshot period based on the measurement ban...
08/31/2010
7773965Calibrated quadrature very low intermediate frequency receiver
The present invention is a quadrature VLIF receiver, including calibration circuitry, and methods to closely match signal processing of an in-phase signal path and a quadrature-phase signal path to optimize VLIF image rejection. The calibration circuitry includes a ...
08/10/2010
7773964Systems, methods and apparatus for determining a radiated performance of a wireless device
Systems, methods, apparatus, processors and computer-readable media include a radiated testing module that executes a predetermined radiated performance test on a wireless device. The test dictates various performance-related parameters to measure and log at each of...
08/10/2010
7742749Method and device for processing signals received by a receiver of radiophonic signals and car radio comprising such a device
A method for processing signals received (30) by a sound program signal receiver includes a step (42, 44) of adjusting at least one parameter for processing small audio signals obtained from the received signals. It further includes a prior step of div...
06/22/2010
7738848Received signal to noise indicator
A wireless transmit/receive unit comprising a radio frequency signal measurement device that is configured to produce a value indicating a radio frequency signal, noise and interference received power at an antenna connector. An average noise plus interference measu...
06/15/2010
7702306Apparatus and method for local oscillator calibration in mixer circuits
An apparatus and method for local oscillator calibration compensates for filter passband variation in a mixer circuit, such as a receiver circuit. The receiver includes at least a mixer circuit and a filter coupled to the output of the mixer. During operation, the m...
04/20/2010
7697909Extended range RMS-DC converter
Described herein is technology for, among other things, reducing offset errors in RMS-to-DC converters. The technology involves generating first and second feedback signals with first and second feedback paths respectively. A multiplier is then employed to receive f...
04/13/2010
7676205Active receiver detection and ranging
Method (500) and system (402) for actively detecting and determining a range of a remotely located radio receiver (100). The invention also provides a method and system to determine whether a remote receiver (100) is receiving a transmitt...
03/09/2010
7650126Method and system for the allocation of UWB transmission based on spectrum opportunities
A method and system for efficiently utilizing frequency spectrum resources is disclosed. The method comprises the steps of determining at least one spectrum opportunity (510), wherein the opportunity is identified by a frequency range and a time duration, det...
01/19/2010
7643810Method and system for noise floor calibration and receive signal strength detection
A system for detecting the level of the noise floor due to circuit noise as seen at the ADC for a wireless receiver. The system measures power after digitizing and filtering, and subtracts off any variable gain used in the analog front end to determine differentiall...
01/05/2010
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