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Class 375/213 - Testing

Subclass of Class 375 - Pulse or digital communications
Definition: Subject matter for testing a pulse or digital signal repeater.
No. of patents: 116
Last issue date: 10/15/2013

NumberTitleIssue Date
8559485Autoregressive signal processing for repeater echo cancellation
A method and apparatus to address multipath interference in a communication system is provided. The method comprises measuring an error signal in a signal path of the repeater, wherein the error signal contains desired communication signals, noise signals, and multi...
8184677Arrangement in a network repeater for monitoring link integrity and automatically down shifting link speed
A network repeater having a plurality of repeater ports selectively establishes links with remote nodes at one of two data rates based on the capabilities of the remote network node and a determined link integrity. A network repeater establishes a link with a networ...
8126034Method for ranging with access point and repeater in wireless communication system
The present invention relates to a mobile communication system, and more particularly, to a repeater and a ranging method using the repeater. In the mobile communication system including the repeater, a ranging operation is performed so that data are transmitted to ...
8040939Picture mode controller for flat panel display and flat panel display device including the same
The picture mode controller for flat panel and flat panel display device including the same includes an input unit to input a first timing signal indicating transmission sections for pixel data, and a second timing signal indicating a transmission time of each pixel...
7428228Method and apparatus for detecting active downlink channelization codes in a TD-CDMA mobile communication system
A method and apparatus in a UE for detecting active channelization codes including channelization codes used by other UEs, which are different from at least one channelization code assigned to the UE, for transmission/reception to/from a Node B in an assigned time s...
7406116Method and system for determining user location in a wireless communication network
In a wireless communication network, the location of an addressable receiver relative to the locations of a plurality of addressable sources of electromagnetic radiation is found using probabilistic models of the signal strength measured at the addressable receiver....
7356019Method and apparatus for converting optical signals to radio channels
The invention relates to a conversion of a pulse modulated signal to a radio frequency signal enabling use of applications and protocols designed for wireless optical links on radio frequency channels. The method comprises receiving the pulse modulated input signal,...
7337356Systematic and random error detection and recovery within processing stages of an integrated circuit
An integrated circuit includes a plurality of processing stages each including processing logic 1014, a non-delayed signal-capture element 1016, a delayed signal-capture element 1018 and a comparator 1024. The non-delayed signal-capture e...
7277672System and method for selecting repeaters
A method is described for selecting repeaters comprising: transmitting a first signal from a first node to a second node; measuring signal strength of the first signal at the second node; transmitting a second signal from the second node to the first node; measuring...
7277477Zero overhead back channel for adaptive transmit filter updates in SerDes transceivers
A method and system that communicates adaptive transmit-side filter updates between a receiver and transmitter inserts additional versions of control codes into a back channel for encoding updates. Since the control codes are required in the back channel, no additio...
7254370Method to maintain stability in a bi-directional amplifier
A method for controlling an adjustable gain in an amplifier having an output power level and an adjustable gain is disclosed. The method includes an enhancement to a conventional Automatic Gain Control (AGC) function that distinguishes between a signal caused by osc...
7251284QAM receiver
A QAM receiver is disclosed. According to one aspect, a QAM receiver includes a signal input for receiving an analog input signal. Further, the QAM receiver includes an anti-aliasing filter and a series connected analog/digital converter for converting the received ...
7236766Filtered wireless communications
In accordance with the principles of the present invention, a method and apparatus for filtered wireless communications is provided. The method provides a filtered wireless zone. Signaling channels normally serving a geographic vicinity are scanned, with the channel...
7234642Memory device
A memory device operable to receive an input signal and to generate a corresponding data bearing output signal in response. The device includes a series of circuit stages operable to be triggered by the input signal at a first stage of the series, thereby causing a ...
7174488Echo canceler-based mechanism for performing and reporting fault diagnostic testing of repeatered telecommunication line
A repeater-installed fault location mechanism conducts parametric measurements on a segment of wireline to which the repeater is connected, and adjusts taps of an echo cancellation operator in the repeater transceiver equipment, in accordance with the response of th...
7171224Method and arrangement for maintaining synchronization in association with resetting a communication connection
A method and an arrangement are disclosed for resetting a communication connection between a first communication device and a second communication device in a cellular radio system. Firstly, there is detected the need for resetting the communication connection. Ther...
7154943Method and circuit of digital measurement of the phase of a sinusoidal signal
A method for measuring with a maximum error E the phase of a substantially sinusoidal signal, of angular frequency ω=2π/T, sampled with a sampling period T/r, in which the phase is calculated as the time at which a straight line crossing two consecutive samples lo...
7142619Long subscriber loops using automatic gain control mid-span extender unit
Systems and methods are described for long subscriber loops using automatic gain control. A method includes extending a digital subscriber loop including: producing an output signal in a first direction from a variable gain amplifier at a mid-span extender unit resp...
7130590Transceiver assembly
A transceiver assembly including an antenna input/output transition, a transmit module, a receive module, and a diplexer. The diplexer has opposing planar surfaces and the transmit module, receive module and antenna input/output transition are placed on the same pla...
7123920Technique for setting up calls in mobile network
In a technique for setting up calls in IP mobile networks, when an application level in a mobile station sends a setup message to set up a multimedia call, before sending such a message over the radio interface, the mobile station performs the appropriate procedures...
7099278Line loop back for very high speed application
Method and circuitry for performing a line loop back test includes a receiver, a deserializer, and a low speed parallel loop back data multiplexer selects either the low speed parallel data from the deserializer when in loop back mode or low speed parallel input dat...
7061872Managed HDSL repeater
A repeater for HDSL transmission is presented. The repeater replaces the regenerator commonly used in HDSL by utilizing the activation/deactivation process in the HDSL specification. The repeater is adjusted to detect an activation/deactivation sequence, whereby a f...
7049939Power line carrier system
The power line carrier system provides with a filter in a power branch apparatus removable from an external power line. The filter passes a power line carrier signal in a signal mode for the external power line, and interrupts another power line carrier signal which...
7042868Method and system for performing ranging functions in an ultrawide bandwidth system
7043678Method for identifying bad frames
The present invention discloses a method and device for identifying unusable data blocks (bad frames) during communication in a network. The method comprises the steps of determining (S1) a classifier (CL_C) in a current data block, calculating (S3) a ...
7035321Monitoring stability of an on-frequency repeater
A system provides evaluation of stability of an on-frequency repeater. A unique signature is imposed on RF signals transmitted by the repeater, and RF signals received by the repeater are analyzed to detect signal components corresponding to the signature. The signa...
7006936Pulse width measuring device with automatic range setting function
A pulse width measuring device is disclosed that calculates the pulse width of a signal to be measured, based on a count value and a count clock signal. In the pulse width measuring device, the counter circuit has a plurality of bits that are divided into an exponen...
6977958Differentially-driven loop extender
Systems and methods are disclosed for improving DSL performance, including ADSL and VDSL performance, over a local loop between a telephone company central office and a customer premises. In particular, a loop extender is coupled to the local loop and differentially...
6977960Self test circuit for evaluating a high-speed serial interface
A data transceiver including a self-test data generator for generating test data, which includes a first pseudo-random number generator programmable so as to allow the operator to input the test data values. The data transceiver further includes a transmitter sectio...
6973043Arrangement for converting between a media independent interface and a twisted pair medium using a field programmable gate array
An integrated network test device has network logic configured for performing prescribed network device operations and outputting network data based on a media independent interface (MII) based protocol, first test logic configured for performing prescribed test ope...
6970497Intermittent calibration apparatus
A base station receives a signal resulting from multiplexing a communication signal spread using a signal-specific spreading code and sent by mobile station apparatus and a calibration (CAL) signal spread using a signal-specific spreading code and sent for each unit...
6961367Forward link repeater frequency watermarking scheme
A forward link repeater frequency watermarking (FLRFWM) system and method that enable accurate position location of mobile stations in areas where repeaters are present by watermarking repeated signals with repeater information. A repeater watermarks a forward link ...
6947469Method and Apparatus for wireless spread spectrum communication with preamble processing period
A simple and flexible over-air protocol for use with a mobile telephone system, having hand-held telephones in a microcell or other type of cellular communication system. A method in which user stations communicate with one or more base stations to place and receive...
6829292Increasing gain with isolating upstream and downstream filters and amplifiers
Systems and methods are described for digital subscriber loop repeaters. A method of transforming a digital subscriber loop signals includes increasing a gain with a digital subscriber loop repeater including: isolating an upstream signal band by passing an upstream...
6819930Apparatus and method for use in allocating a channel resource in wireless multiple access communications systems
Allocation of a wireless communications system channel resource is managed by utilizing traffic segment allocation. This is realized by partitioning the channel resource into an assignment channel and a traffic channel in a fixed manner. The assignment channel inclu...
6795491Spread spectrum localizers
A network of localizers determines relative locations in three-dimensional space to within 1 cm by cooperatively measuring propagation times of pseudorandom sequences of electromagnetic impulses. Ranging transmissions may include encoded digital information to incre...
6721352Method and device for detecting the presence of a carrier signal transmitted in the reverse RF path
The present invention provides an improved apparatus and method for detecting a reverse carrier signal. The present invention utilizes a peak detector/envelope filter for determining the peak level of the reverse analog waveform. The peak level is compared to a thre...
6606350Pulse transmission receiver with higher-order time derivative pulse generator
Systems and methods for pulse-transmission low-power communication modes are disclosed. A pulse transmission receiver includes: a front-end amplification/processing circuit; a synchronization circuit coupled to the front-end amplification/processing circu...
6510174Apparatus, and associated method, for facilitating setting of link parameters to improve communication qualities in a radio communication system
Apparatus, and an associated method, for facilitating selection of link parameters associated with a communication signal transmitted in a radio communication system, such as a GSM (global system for mobile communications) system which provides for GPRS (...
6463107Methods and apparatuses for synchronization and modulation type detection
In a communication system including a transmitter and a receiver, the receiver is synchronized with the transmitter, and a modulation type in a signal transmitted by the transmitter and received by the receiver is detected. A first portion of the received...
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