|
Match
|
Document |
Document Title |
|
|
7620076 |
System and method for variably inserting training symbols into transmissions by estimating the channel coherence time in a wireless communication network
A system and method for controlling the quantity of training symbols in a transmission sequence sent by a terminal ( 102, 106, 107 ) in a wireless network ( 100 ). The transmission sequence include...
|
|
|
7616927 |
Method and apparatus to reduce multipath effects on radio link control measurements
One or more median filter circuits are used to filter radio link control measurements corresponding to one or more radio link parameters of interest, such as received signal quality or round trip...
|
|
|
7616711 |
Frequency domain filtering to improve channel estimation in multicarrier systems
A channel estimation system comprises a filtering component that selectively scales a plurality of carriers as a function of location of the plurality of carriers within a frequency band, wherein...
|
|
|
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...
|
|
|
7609781 |
Wireless communication device with self calibration feature for controlling power output
A wireless communication device is disclosed which employs a minimal number of power calibrations to set the output power of the device to a specified output power level. In one embodiment, the...
|
|
|
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...
|
|
|
7606341 |
Circuit for bit alignment in high speed multichannel data transmission
An alignment circuit is configured to receive a reference clock signal (ref_clk) derived from a main clock having a period T and successive sets of 2n data bits that are transmitted in parallel on...
|
|
|
7606335 |
Signal pulse detection scheme for use in real-time spectrum analysis
A spectrum analysis engine (SAGE) that comprises a spectrum analyzer component, a signal detector component, a universal signal synchronizer component and a snapshot buffer component. The spectrum...
|
|
|
7606298 |
Method of testing remote power line carrier pick-up coil
Methods to test the operation of the pick-up coil without having to de-energize the power line serving as the power line carrier in order to perform testing on the pick-up coil. A series of test...
|
|
|
7606297 |
Method and system for creating an eye diagram using a binary data bit decision mechanism
Disclosed herein is a method that directs the components and signal detection path of a binary data bit decision mechanism used to obtain the bit error rate of the bit stream of an incoming or...
|
|
|
7602859 |
Calibrating integrating receivers for source synchronous protocol
An embodiment of the present invention is a technique to calibrate an integrating receiver. A delay calibration circuit calibrates an adjusting code of a chain of delay elements and positioning of...
|
|
|
7599453 |
Doppler spread estimation for OFDM systems
A Doppler spread value of a channel in an Orthogonal Frequency Division Multiplexing (OFDM) system is estimated, wherein the channel comprises a plurality of carrier frequencies. Estimating...
|
|
|
7596461 |
Measurement of air quality in wireless networks
A system for measuring air quality in wireless networks. In particular implementations, a method includes computing an interference severity level for a plurality of interference sources detected...
|
|
|
7593742 |
Received communication signal processing methods and components for wireless communication equipment
A wireless transmit receive unit (WTRU) and methods are used in a wireless communication system to process sampled received signals to establish and/or maintain wireless communications. A...
|
|
|
7593459 |
Wireless link simulator
A wireless link simulator includes, in sequence, a digital transmit device under test (TX-DUT), a wireless link simulator, and a digital receive device under test (RX-DUT). The wireless link...
|
|
|
7590152 |
Router-based monitoring of EF-on-EF jitter
A system for monitoring EF-on-EF jitter in a network node having an EP output queue into which EF packets are entered comprises a first counter that counts the packets entering the queue and also a...
|
|
|
7583725 |
Dynamically reconfigurable adaptive communication device and system
Method and apparatus for transmission of information is described. A first transceiver has transmitter reconfigurable logic and a second transceiver has receiver reconfigurable logic. The first...
|
|
|
7583091 |
Printed circuit board, and backplane data transmission method
In a receiving-side printed circuit board, a reflected-waveform analyzing unit analyzes a reflected wave generated in a transmission line on a backplane along with transmission of a signal from a...
|
|
|
7577191 |
Apparatus for automatically detecting BER measurement signal
An apparatus comprises input means, detection means and a selector, and automatically detects a kind of serial signal used in BER measurement. The input means receives at least two signals which...
|
|
|
7577190 |
Method for prediction of a channel coefficient
The present invention provides a method for prediction of a channel coefficient for a propagation path in a mobile radio channel with multipath propagation, in which a canonical random variable...
|
|
|
7573937 |
Phase rotator control test scheme
Techniques and apparatus for testing phase rotators for detecting defective tap weights are provided. Phase rotator test logic may include a master phase rotator to cycle the phase of a clock...
|
|
|
7567614 |
Altering power consumption in communication links based on measured noise
A method, circuit and system for altering the power consumption in communication links. A type of noise and an amount of jitter in a signal transmitted across a communication link is measured. Upon...
|
|
|
7564897 |
Jitter measuring apparatus, jitter measuring method and PLL circuit
A jitter measurement apparatus for measuring an intrinsic jitter of a circuit to be tested including a phase detector which outputs a signal according to a phase difference between a supplied first...
|
|
|
7564896 |
Method for measuring multiple parameters of a signal transmitted by a signal generator
A method is disclosed for measuring one or more parameters of a signal generated by a signal generator. The method employs capturing and analyzing a train of data packets or other forms of signals...
|
|
|
7564893 |
Test system and method for parallel modulation error measurement of transceivers
A test system is capable of performing parallel modulation error measurement of transceivers using a loop-back configuration. Each transceiver includes a transmitter and a receiver. A signal...
|
|
|
7561212 |
Digital broadcast receiving apparatus and receiving method
A factor in deterioration of receiving characteristics of an antenna is automatically determined and automatically improved. In an apparatus for receiving digital broadcast signal, when receiving...
|
|
|
7559001 |
Method and apparatus for executing commands and generation of automation scripts and test cases
A command execution terminal includes an interactive graphical-user-interface (GUI) for sending commands to devices under test and to capture and display the command responses and maintaining a...
|
|
|
7558316 |
System and method for implementing a delta-sigma modulator integrity supervisor
A system and a method for constructing a signal integrity supervisor capable of both detecting and triggering an appropriate response when transmit path signals indicate a potential damaging...
|
|
|
7555038 |
Transmission system, signal receiver, test apparatus and test head
A transmission system for transmitting a transmission signal, includes a section for outputting a periodic clock having a preset period, a section for transmitting the transmission signal in...
|
|
|
7551690 |
Transmitter and receiver
A transmitter ( 1 ) converts an input signal from a microphone ( 2 ) into a plural-bit digital signal by means of an A/D converter ( 4 ) at predetermined time intervals. An encoder ( 6 ) divides...
|
|
|
7538706 |
Mash modulator and frequency synthesizer using the same
A MASH modulator. The MASH modulator receives a fractional input value, generates an integer output value, and comprises three cascaded first order sigma delta modulators (SDMs) each comprising an...
|
|
|
7529295 |
Acquiring frequency and phase offset estimates using frequency domain analysis
Determining a frequency and phase offset estimates include receiving a signal at an offset estimator. The received signal is zero-padded in the time domain to yield a zero-padded signal. A Fourier...
|
|
|
7529294 |
Testing of multiple asynchronous logic domains
A digital system and a method for operating the same. The digital system includes (a) a first and a second pins, (b) first and second logic domains, and (c) first and second test pulse generator...
|
|
|
7523365 |
Dynamic determination of signal quality in a digital system
A receiving processor is configured with a normal (operational) path and a test path. The test path is configured in parallel with the normal path. The test path simulates and receives as input the...
|
|
|
7522662 |
Electronic device including image forming apparatus
When a plurality of sub-processors are daisy chained in a loop, for example, to a main processor by a one-way bus, a command packet from the main processor addressed to itself is transmitted to the...
|
|
|
7522661 |
Method of producing a two-dimensional probability density function (PDF) eye diagram and Bit Error Rate eye arrays
A method of producing of a two-dimensional probability density function eye diagram and Bit Error Rate eye arrays generates a two-dimensional PDF array of a correlated waveform record of a data...
|
|
|
7522660 |
Pulse pattern generating apparatus
An object of this invention is to realize a pulse pattern generating apparatus that outputs a test signal of high waveform quality even when the shape of an eye pattern is changed. This invention...
|
|
|
7519383 |
Method for efficient calibration of EVM using compression characteristics
A method for estimating and measuring error vector magnitude (EVM) is provided by correlating a transmitter compression level to an EVM.
|
|
|
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...
|
|
|
7519112 |
Testing device and method for providing receiver overload protection during transceiver testing
A testing device for testing transceivers includes a transmitter operable in a first state to transmit signals, a receiver operable in a second state to receive signals and a power coupler coupling...
|
|
|
7519111 |
Apparatus and method for providing system and test clock signals to an integrated circuit on a single pin
In a configuration testing integrated circuits, the system clock signals are forced to the same frequency as the test clock signals. When the test clock signals and the system clock signals have...
|
|
|
7515877 |
Communicating signals according to a quality indicator and a time boundary indicator
One or more quality indicators are established at a first communication device having antenna elements. The quality indicators indicate a quality of one or more communication links between the...
|
|
|
7509095 |
Method and system for identifying occurrence of shadowing phenomenon during wireless communications
A method for identifying occurrence of shadowing phenomenon is to be implemented using a wireless communications system that includes signal transmitting and receiving devices. The signal-receiving...
|
|
|
7508868 |
Systems and methods for testing the performance of and simulating a wireless communication device
A system abstracts channel information from field data gathered in actual wireless communication system environments. The abstracted data is then transformed into control signals or programming...
|
|
|
7505512 |
Method and apparatus for combining statistical eye channel compliance methods with linear continuous-time equalization
A method and apparatus for combining statistical eye channel compliance methods with linear continuous-time equalization. A set of equalizer parameters is processed with measured channel parameters...
|
|
|
7502410 |
Method and system for controlling a notching mechanism
A circuit ( 100 ) is provided for notching an incoming wireless signal. The circuit comprises: a notching mechanism ( 110 ) for receiving an incoming signal and generating a notched signal having...
|
|
|
7502326 |
Methods used to simultaneously perform automated at-speed testing of multiple gigabit per second high serial pin count devices
A method performs automated at-speed testing of devices. The method includes the steps of generating multiplexer control signals, forming various signal paths between a set of multiplexers and the...
|
|
|
7500162 |
Sourcing internal signals to output pins of an integrated circuit through sequential multiplexing
An integrated circuit with a multiplexer system and a control circuit is described. The multiplexer system has an output terminal connected to an output pin of the integrated circuit and input...
|
|
|
7499406 |
Method and apparatus for estimating and reporting the quality of a wireless communication channel
A method and apparatus for estimating and reporting the quality of a wireless communication channel between a wireless transmit/receive unit (WTRU) and a Node-B. A modulated signal is received from...
|
|
|
7496137 |
Apparatus for measuring jitter and method of measuring jitter
There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, including a pulse generating section having first pulse generating means for detecting edges of...
|