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| Application No. | Application Title | Issue Date |
| 20120128109 | NOISE ESTIMATION FORWIRELESS COMMUNICATION Techniques for deriving and using noise estimate for data reception in a wireless communication system are described. A noise estimate may be derived for each packet received in a data transmission. Data detection may then be performed for each packet using the noise es... | 05/24/2012 |
| 20120039425 | ZERO-CROSSING GAIN CONTROL SYSTEM AND ASSOCIATED METHODS A zero-crossing gain control system is disclosed herein. The system comprises a gain control unit for amplifying an input signal to an output signal, a zero-crossing monitoring circuit for monitoring the input signal or output signal, and a register for latching the dig... | 02/16/2012 |
| 20120020441 | FIXED POINT FIR FILTER WITH ADAPTIVE TRUNCATION AND CLIPPING AND WIRELESS MOBILE STATION USING SAME A fixed point finite impulse response (FIR) filter comprising: 1) an input stage for receiving an input signal as a sequence of input samples comprising: i) delay elements connected in series for receiving and shifting N sequential input samples; ii) multipliers, each m... | 01/26/2012 |
| 20120014484 | METHOD AND APPARATUS FOR PERFORMING TEMPERATURE COMPENSATION Various methods for performing amplifier gain compensation to correct for variations in temperature are provided. One example method includes modifying a gain adjustment value based on a current temperature reading, receiving a signal, appl... | 01/19/2012 |
| 20120014485 | SIGNAL PROCESSING DEVICE A prediction error calculating unit 13 calculates an error signal 103 between a left signal l(n) 101 and a prediction signal of the left signal l(n) 101 predicted from a right signal r(n) 102, a gain adjusting unit 17 makes a ga... | 01/19/2012 |
| 20120002713 | MULTI-PROTOCOL COMMUNICATIONS RECEIVER WITH SHARED ANALOG FRONT-END According to an example embodiment, a communications receiver may include a variable gain amplifier (VGA) configured to amplify received signals, a VGA controller configured to control the VGA, a plurality of analog to digital converter (ADC) circuits coupled to an outp... | 01/05/2012 |
| 20120002765 | AUTOMATIC GAIN CONTROL AND BASEBAND PREINTEGRATION TO REDUCE COMPUTATION REQUIREMENTS AT LOWER DATA RATES A method for processing baseband signals according to one embodiment includes receiving I and Q baseband signals; and selectively reducing an amount of samples of the baseband signals to be processed in a correlator, wherein the reduction rate is based on a data rate of... | 01/05/2012 |
| 20120002766 | RSSI ESTIMATE ON VARIABLE LENGTH CORRELATOR OUTPUT A method for estimating a strength of a radio frequency signal according to one embodiment includes receiving a correlator magnitude signal from a correlator module; performing a gain scaling on the correlator magnitude signal; and averaging the scaled correlator magnit... | 01/05/2012 |
| 20110311006 | AUTOMATIC GAIN CONTROL METHOD AND APPARATUS FOR WIRELESS COMMUNICATION SYSTEMS A system and method are provided for automatic gain control (AGC) using an adaptive reference and a threshold. An adaptive reference allows for adjusting the target power based on variations in operating parameters and conditions, such as a change to a modulation scheme... | 12/22/2011 |
| 20110305305 | REDUCING SWITCHING NOISE The present solution relates to a method in a first communication node (501) for suppressing noise in a communication system (500) utilizing an automatic gain control. The first communication node (501) receives (1301) a signal from a second ... | 12/15/2011 |
| 20110299640 | DEVICE AND METHOD FOR GATHERING ENSEMBLE DATA SETS An ensemble detector uses calibrated noise references to produce ensemble sets of data from which properties of non-stationary processes may be extracted. The ensemble detector comprising: a receiver; a switching device coupled to the receiver, the switching device conf... | 12/08/2011 |
| 20110293048 | Quadrature gain and phase imbalance correction Generally speaking, methods and apparatuses which correct errors related to phase and gain imbalances in quadrature tuners are disclosed. The quadrature tuner may be online and operating, receiving data. An embodiment may generate a squared signal from the IF frequency ... | 12/01/2011 |
| 20110292984 | RECEIVER APPARATUS, COMMUNICATION SYSTEM, RECEPTION METHOD AND COMMUNICATION METHOD A receiver apparatus 200 receiving a quadrature-modulated, modulated wave, includes: a real-zero signal generator 205 for adding a sinusoidal wave to the modulated wave to generate a real-zero signal; an in-phase and quadrature component detector 206 | 12/01/2011 |
| 20110286557 | RECEIVING APPARATUS According to one embodiment, a variable gain amplifier amplifies a reception signal, a mixer performs frequency conversion of the reception signal amplified by the variable gain amplifier, a detector detects the reception signal subjected to the frequency conversion, an... | 11/24/2011 |
| 20110280350 | FIXED POINT FIR FILTER WITH ADAPTIVE TRUNCATION AND CLIPPING AND WIRELESS MOBILE STATION USING SAME A fixed point finite impulse response (FIR) filter comprising: 1) an input stage for receiving an input signal as a sequence of input samples comprising: i) delay elements connected in series for receiving and shifting N sequential input samples; ii) multipliers, each m... | 11/17/2011 |
| 20110280297 | Direct Digital Conversion Tuner A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high accur... | 11/17/2011 |
| 20110274223 | AGC TUNER FOR MIMO SYSTEMS The present disclosure provides methods and systems for automatic gain control (AGC) in a multiple input multiple output (MIMO) system having two or more receiver chains, each receiver chain including a receiver and an AGC module. The AGC system accepts a signal at a co... | 11/10/2011 |
| 20110274224 | METHOD AND DEVICE TO CONTROL THE GAIN OF A RADIO RECEIVER An automatic gain control (AGC) method and system for a radio receiver are proposed in which the ACG comprises two AGC loops; a first loop controlling signal gain in the analogue portion of the radio receiver, a second loop controlling gain in the digital domain after d... | 11/10/2011 |
| 20110274222 | DIGITAL FREQUENCY CHANNELIZER A method and apparatus provide digital frequency channelization of a digitally sampled input stream having a first bandwidth. The method and apparatus are implementable in software, firmware or hardware and convert a first set of real samples from the input stream into ... | 11/10/2011 |
| 20110255642 | RECEIVING APPARATUS, AND COMPUTER READABLE MEMORY MEDIUM THAT STORES A PROGRAM Suitable gain control is achieved at low cost. In a receiving apparatus, an RF signal that is amplified by an RF amp is converted to an IF frequency by a frequency conversion unit and amplified by an IF amp, then the output signal from the ... | 10/20/2011 |
| 20110235758 | Mixed-Mode Receiver Circuit Including Digital Gain Control A receiver circuit includes an analog front-end and a digital processing unit. The analog front-end includes an input for receiving a radio frequency (RF) signal, a first control input for receiving a gain adjustment signal, a second control input for receiving a timing... | 09/29/2011 |
| 20110206144 | RECEIVER AND TRANSMISSION/RECEPTION SYSTEM In a wireless receiver, a “variance” of an intermediate output signal of a demodulation section is calculated by a variance calculation section, and the calculated variance is used as a signal quality indicator which indicates the degree of goodness of a receiving c... | 08/25/2011 |
| 20110188616 | RADIO TRANSMITTING APPARATUS AND RADIO TRANSMISSION METHOD A radio transmitting apparatus that has a plurality of antennas and changes the number of modulated signals transmitted simultaneously according to the propagation environment and so forth. A transmission power changing section 12 of a radio transmitting apparatu... | 08/04/2011 |
| 20110182388 | APPARATUS FOR REJECTING IMAGE IN RECEIVER The present invention relates to an apparatus for rejecting images in a receiver. The apparatus of the present invention relates to an apparatus for rejecting image signals in a receiver of a direct conversion structure and comprises a sign... | 07/28/2011 |
| 20110176644 | AUTOMATIC GAIN CONTROL IN RADIO FREQUENCY RECEIVERS An automatic gain controller (AGC) in white space devices is configured with two operational modes. When entering a quiet time of the white space device, the AGC selects the first operational mode. The first operational mode is associated with detecting licensed signals... | 07/21/2011 |
| 20110170582 | APPARATUS AND METHOD FOR DOWNCONVERTING RF MULTI-SIGNALS SIMULTANEOUSLY BY BANDPASS SAMPLING The present invention relates to a method of down-converting RF multi-signals by bandpass sampling, which includes: setting up obtainable combinations of 2 spectrum signals extracted from 2N negative and positive spectrum signals existing for N RF signals; calculating a... | 07/14/2011 |
| 20110158291 | Automatic Gain Control for Frequency-Hopped OFDM An automatic gain control method and system for use in signal processing of OFDM symbols at a receiver. Two stages of coarse and fine automatic gain control are implemented that adjust different gains in an analog RF processing stage of the receiver. Gain of a low noise... | 06/30/2011 |
| 20110150119 | METHOD AND SYSTEM FOR CHANNEL ESTIMATION IN AN OFDM BASED MIMO SYSTEM Upon receiving spatially independent OFDM signals from multiple transmit antennas coupled to a single transmitter, a receiver comprising multiple receive antennas operably coupled to multiple RF chains adjusts phase and/or gain of a portion of signal components received... | 06/23/2011 |
| 20110150152 | SYSTEMS AND METHODS PROVIDING FREQUENCY-DOMAIN AUTOMATIC GAIN CONTROL (AGC) A method for Automatic Gain Control (AGC) in a receiver is performed by a circuit having an inner loop and an outer loop. The method includes performing an outer loop energy detection, mitigating interference using the outer loop energy detection, and performing a frequ... | 06/23/2011 |
| 20110116582 | DIGITAL AUTOMATIC GAIN CONTROL An automatic gain control (“AGC”) system. The system includes a first multiplier, an envelope detector, a summation module, a filter module, a convergence module, and a feedback module. The convergence module includes a convergence control module and a second multip... | 05/19/2011 |
| 20110085625 | RECEIVER AND SEMICONDUCTOR DEVICE A receiver includes an automatic gain control (AGC) loop and a filter group that is arranged downstream of the AGC loop. The filter group includes an active filter. The receiver further includes a power difference detector and a switch circuit. The power difference dete... | 04/14/2011 |
| 20110075772 | SYSTEM AND METHOD FOR DYNAMIC OUTPUT BACK-OFF A device is provided for use with an input signal including a first packet of a first modulation type in series with a second packet of a second modulation type. The device includes a gain adjustment portion and a gain portion. The gain adjustment portion can output a f... | 03/31/2011 |
| 20110044381 | CLOSED LOOP POWER NORMALIZED TIMING RECOVERY FOR 8 VSB MODULATED SIGNALS A timing recovery loop includes a sampler, a narrow band filter, an RMS normalizer, a timing error detector, and a sample controller. The sampler samples a received signal. The narrow band filter filters the sampled received signal so as to pass an upper band edge of th... | 02/24/2011 |
| 20110033013 | RADIO RECEIVER GAIN CONTROL A radio receiver (100) comprises an analogue to digital converter (30) for generating a data word representative of received radio signal and a gain control stage (40) comprising a first register (42) for storing the data word. The gain contr... | 02/10/2011 |
| 20110026651 | AUTOMATIC GAIN CONTROL IN A RECEIVER Automatic gain control in a receiver. A method for controlling operating range of an analog-to-digital converter (ADC) by an automatic gain control circuit includes estimating a peak-to-average ratio corresponding to an analog signal from digital samples of the analog s... | 02/03/2011 |
| 20110013724 | I/Q IMBALANCE ESTIMATION AND COMPENSATION FOR A TRANSMITTER AND A RECEIVER Techniques for performing inphase/quadrature (I/Q) imbalance estimation and compensation are described. In one exemplary design, I/Q imbalances in a receiver may be estimated by (i) applying a continuous wave signal at different frequencies to the receiver and (ii) proc... | 01/20/2011 |
| 20110013733 | VARIABLE GAIN CONTROL FOR HIGH SPEED RECEIVERS A high speed receiver is provided using two parallel processing paths to enable rapid variable gain control. The parallel processing paths include a first processing path using a high resolution Discrete Fourier Transform (DFT), and a second processing path using a redu... | 01/20/2011 |
| 20110007780 | Receiver with automatic gain control An automatic gain control (AGC) system and corresponding method is configured to increase signal to noise in a receiver. The AGC system includes: a signal level detector for determining a signal level for a desired signal; a wideband signal detector for determining a wi... | 01/13/2011 |
| 20100329397 | ESTIMATION AND COMPENSATION METHOD FOR IQ IMBALANCE The present invention relates to a method and apparatus for estimating and compensating IQ imbalance of a baseband sampling digital communication receiver in digital time domain. Specifically, after an analog-to-digital converter (ADC) in the baseband sampling system, a... | 12/30/2010 |
| 20100328544 | Digital Signal Processor (DSP) Architecture For A Hybrid Television Tuner According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Suc... | 12/30/2010 |
