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Class 455/226.3 - Signal-to-noise ratio


Subclass of Class 455 - Telecommunications
Definition: Subject matter including a means for determining a signal-to-noise
No. of patents: 219
Last issue date: 05/22/2012


1            
NumberTitleIssue Date
8185073Noise/signal estimation for wireless systems
A method, apparatus, and computer program product, wherein received signal components are determined for a selected group of sub-carriers based on individual noise and signal contributions of the sub-carriers. At least one of noise and a parameter relating to at lea...
05/22/2012
8145163Methods of detection of received signal in communication system
A method of detecting a received signal, which is received by a receiving side of a communication system, is disclosed. The present invention includes comparing signal quality relevant information of the received signal to a prescribed reference value, selecting a p...
03/27/2012
8107909Reception device, radio communication terminal, radio base station, and reception method
A reception device 10 includes a channel estimator 130 configured to calculate channel estimation information for each of first to fourth known signals, the channel estimation information indicating estimation of a characteristic of a channel of the ra...
01/31/2012
7706764Systems and methods for active noise cancellation in an RFID tag reader
Systems and methods for providing active noise cancellation in an RFID tag reader are described. In one aspect, the method features increasing the signal-to-noise-plus-interference ratio of a radio frequency tag response. The method includes receiving, with a first ...
04/27/2010
7702307Frequency modulation radio receiver including a noise estimation unit
A frequency modulation (FM) radio receiver includes a processing unit that may generate a magnitude value corresponding to a signal strength of each of a plurality of digital samples of a received FM signal. The receiver also includes a noise estimation unit that ma...
04/20/2010
7443827Mobile communication system, multicarrier CDMA transmitter, and multicarrier CDMA receiver
A transmitting apparatus adds a common pilot symbol and known series for each data slot of a subcarrier group. A receiving apparatus combines SIR calculation values obtained for each subcarrier group, and averages the SIR calculation values. Based on this, it is pos...
10/28/2008
7433661Method for improved performance and reduced bandwidth channel state information feedback in communication systems
A method of transmitting information over a feed back channel of a communication system that has multiple antenna systems is provided. Long term channel condition information is obtained from received measured and/or calculated channel parameter values. The obtained...
10/07/2008
7430237Decoderless bit-error-rate estimation for convolutionally encoded transmissions in wireless systems
In a UMTS (universal mobile telecommunications system) based system, a wireless receiver implements “effective signal-to-noise (Eb/No) based BER estimation.” In particular, the wireless receiver comprises a rake receiver, a processor and me...
09/30/2008
7424269System, method and device of radar detection
Embodiments of the present invention provide a method, apparatus and system of radar detection. The method, according to some demonstrative embodiments of the invention, may include comparing an energy level of signals received over a wireless communication channel ...
09/09/2008
7421261Blind detection
The present invention relates to a blind detection of a received signal having at least one property, which initially is unknown to the receiver, however, limited to a finite set of alternatives ({p1, p2, . . . , pm}). According to t...
09/02/2008
7418240Dynamic adaptation of impaired RF communication channels in a communication system
A system for dynamically adapting a communication channel to channel impairments includes a spectrum monitor configured to determine a channel impairment characteristic related to a channel impairment present in the channel. The system includes a system manager conf...
08/26/2008
7395084Dynamic antenna allocation system
A communication system with an antenna array having a respective antenna for each of a multitude of communication modules and a control system which seiectiyely reassigns communication over a first of said multitude of communication modules to a second communication...
07/01/2008
7392016Data transmission rate control
A method includes monitoring a variable-rate data communication channel to determine its signal-to-noise ratio, and adjusting the data transmission rate of the variable rate data communication channel based on its signal-to-noise ratio. ...
06/24/2008
7389092Circuitry for a receiving system with improved directivity and signal to noise ratio
A receive system, including special integrated circuits, for providing enhanced directivity in the form of a narrowed receive beam and a relatively small antenna with performance comparable to a much larger antenna at similar frequencies. Received signals are conver...
06/17/2008
7379864Method and apparatus for the detection of previous packet loss in non-packetized speech
A method and apparatus for detecting previous packet loss in non-packetized speech by applying one or more filters to a segment of said non-packetized speech, each of said one or more filters determining an energy parameter value for a given frequency band of said s...
05/27/2008
7373130Simultaneous channel estimation of a carrier and an interferer
Interference suppression in a receiver in a wireless network that utilizes training sequences for synchronization and channel estimation, wherein the training sequence of an interfering channel overlaps the training sequence of a desired channel to cause degraded ch...
05/13/2008
7369833Method and apparatus for improving the directivity of an antenna
A receive system, including special integrated circuits, for providing enhanced directivity in the form of a narrowed receive beam and a relatively small antenna with performance comparable to a much larger antenna at similar frequencies. Received signals are conver...
05/06/2008
7366475Signal strength measurements in cellular telecommunication systems
A mobile station (MS) and method for estimating received signal strength of a radio signal from a neighboring cell in a cellular radio telecommunication network. The MS measures the received signal strength of the radio signal over a plurality of frames, and calcula...
04/29/2008
7359707Wireless communications handoff method and system employing such
A method for reducing a delay in a wireless communications system resulting from a handoff while mitigating a risk of premature termination of wireless communications, the method includes comparing data indicative of actual use of the wireless communications systems...
04/15/2008
7359689Wireless receiving method
A wireless receiving method includes calculating a transmission channel response from a reception signal and a reference signal, determining reliabilities of a plurality of transmission channel responses calculated using reception signals received at different time ...
04/15/2008
7359728Modified power control for reduction of system power consumption
Systems and techniques are disclosed relating to gating transmissions in a wireless networks. Transmissions are gated based on a duty cycle. The duty cycle in turn is determined by the requirement to maintain an original application data rate rinitial giv...
04/15/2008
7356071Method and apparatus for estimating signal-to-noise ratio based on dedicated physical channel pilot symbols
The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the ...
04/08/2008
7356314Systems and methods for reusing a low noise amplifier in a wireless communications device
A wireless communication device comprises a plurality of receive signal paths, each of the receive signal paths is configured to receive signals in a certain frequency bandwidth. The communication device also comprises an amplifier coupled with each of the plurality...
04/08/2008
7355993Method and apparatus for forward link gain control in a power controlled repeater
A power controlled repeater is disclosed for use in a wireless communication system to control the forward link gain. The power controlled repeater includes a forward link for communications from a base station to a mobile station. In addition, the power controlled ...
04/08/2008
7346173Method and circuit assemblage for influencing the treble reproduction of an audio signal
A method for influencing, e.g., for decreasing, the treble reproduction of an audio signal for reproduction obtained from a received signal, the received field strength and reception quality of the received signal being evaluated and, as a function thereof, the tran...
03/18/2008
7342971Bipolar waveform modulation for ultra wideband (UWB) communication networks
A method for ultra wideband (UWB) communication in which UWB pulses encode binary data as either normal or inverted (anti-podal) pulses. In the case of pulses of a carrier signal, each pulse has the carrier signal either inverted or in phase, that is, shifted by 180...
03/11/2008
7333775Method for detection of radio communication terminals
A method detects which radio communication terminals use interference suppression procedures, in a radio communication system. Here radio communication terminals periodically return measurement signals which represent radio field characteristics and/or reception sit...
02/19/2008
7328019Communication environment measurement method for mobile station and the mobile station
In a communication system for respectively transmitting pilot signals from a plurality of base stations to a mobile station via a first channel and also for transmitting data from one base station to a mobile station via a second channel, the mobile station corrects...
02/05/2008
7324783Method, arrangement and communication receiver for SNIR estimation
A method, arrangement (512) and communication receiver (500) for SNIR estimation of a received signal, by: deriving (512A) an estimation {circumflex over (Z)} of SNIR of the received signal in accordance with the relation ...
01/29/2008
7313366Radio communications unit
There is described a radio communications system, including a unit which is able to communicate over a radio communications network such as a satellite or cellular system, and is also able to communicate with a device such as a portable handset over a short range ra...
12/25/2007
7310369SNR-related parameter estimation method and system
A method for estimating an SNR-related parameter, such as ES/N0, from one or more symbols. The number of symbols within a predetermined number of symbols that fall within one or more collection areas is counted. The count is then associated wit...
12/18/2007
7302276Method and system for determining uplink/downlink path-loss difference
Methods and apparatus are described for estimating a path-loss difference between uplink and downlink communications at a first node communicating with a second node in a communication system. A quantity of access request preambles transmitted by the first node to t...
11/27/2007
7286806Detachable radio module
A radio module that detachably connects with a host device. A radio module is provided that includes an antenna as an integral part of the radio module. The antenna satisfies regulatory requirements by being an integral part of the radio module. The radio module inc...
10/23/2007
7286826Method for providing a multicast service using a carrier-to-interference ratio in a hierarchical cell structure
A method for providing a multicast service from a macrocell or a microcell to a mobile station in a mobile communication system having a hierarchical cell structure in which a given area is divided into at least one macrocell and at least one microcell overlapping w...
10/23/2007
7283956Noise suppression
A method and apparatus for noise suppression is described herein. The channel gain is controlled based on a degree of variability of the background noise. The noise variability estimate is used in conjunction with a variable attenuation concept to produce a family o...
10/16/2007
7283938Virtual sensor for data and sensor fusion
A plurality of sensors observe an object, and the raw sensor data is processed to produce evidence signals representative of characteristics which may be used to classify the object as to type. The sensor response characteristics from the plurality of sensors are fu...
10/16/2007
7283799Cancellation system for frequency reuse in microwave communications
Substantial improvements in frequency reuse in microwave communications systems is achieved by canceling co-channel interference and transmitter leakage. Interferometric beam-narrowing reduces beamwidth without reducing peak magnitude of the beam pattern. Frequency-...
10/16/2007
7274920Methods and apparatus for reducing signal interference in a wireless receiver based on signal-to-interference ratio
One illustrative method of reducing signal interference in a wireless receiver includes receiving a radio frequency (RF) signal; amplifying the received RF signal with a gain G; producing a baseband signal from the amplified RF signal; producing a signal-to-interfer...
09/25/2007
7266477Method and system for sensor signal fusion
The first sensor collects a first group of first sensor readings of first fixed size dependent on a range of a first sensor and safeguarding requirements of a vehicle. A second sensor collects a second group of second sensor readings of second fixed size dependent o...
09/04/2007
7263143System and method for statistically directing automatic gain control
The present invention is directed to a system and method which statistically determines when regularly occurring interference events of a predictable duration will occur, for example radar pulses and dynamically adjusts an automatic gain control (AGC) for RF data tr...
08/28/2007
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