Abstract: A remote alarm for use with a wearable medical device. The remote alarm is configured to receive alarms, voice messages and prompts issued by the wearable medical device and to repeat those alarms, voice messages and prompts in a manner that can more easily be perceived by a patient wearing the wearable medical device or a bystander. The remote alarm can be configured to receive a communication from the wearable medical device, and in response, to identify one or more messages to be provided to the patient or a bystander. The messages may be provided audibly, visually, tactilely or combinations thereof. The remote alarm may further be configured to take certain actions depending upon the content of the communication, such as sending a telephone message to alert emergency personnel to the identity, location and medical condition of the patient, or sending an email.

Abstract: This disclosure provides methods and systems for reducing congestion in RoCEv2 networks. The method is configured to operate large-scale in data centers on traffic flowing from a sender node to a receiver node. The method described has three stages: a fast start stage, a transition stage, and a regulation stage. In the fast start stage, the sender sends data to the receiver at a fast initial rate. This may continue until the receiver observes a congestion event. When this happens, the sender reduces the data transfer rate as the method enters the transition stage. From a reduced rate, the method enters the regulation stage, where the rate is increased using a combination of a feedback control loop and an additive increase multiplicative decrease (AIMD) algorithm.

Abstract: A smart thermometer and a method for measuring body temperature using the same are provided. The method for measuring body temperature using a smart thermometer comprises: performing advertising in idle mode; switching the smart thermometer to active mode and connecting to user equipment; measuring body temperature by using a temperature sensor; determining whether the measured body temperature stays below a first threshold for a preset period of time; if the measured body temperature stays below the first threshold for a preset period of time, switching to idle mode and performing advertising; and if the measured body temperature reaches or exceeds the first threshold within the preset period of time, displaying the measured body temperature on a display window and transmitting the measured body temperature to the user equipment.

Abstract: A compensation signal generator generates a compensation signal for canceling an electromagnetic noise on a connection line on the basis of a detection signal of a noise detector. A compensation signal injector injects the compensation signal into the connection line. A compensation signal detector outputs a detection signal of the compensation signal. A low-frequency component subtraction unit amplifies a component in a predetermined first frequency region of the detection signal and negatively feeds back the amplified component to the compensation signal generator. An intermediate frequency component addition unit positively feeds back a component of a predetermined second frequency that is higher than the first frequency region in the detection signal to the compensation signal generator.

Abstract: Provided is a fitting apparatus configured to acquire measurement data obtained by measuring a swing action of a test club by a golfer, calculate one or more first indices representing an amount of change in an openness of a face surface of a head included in the test club at a time of the swing action based on the measurement data, calculate one or more second indices representing a characteristic of the swing action based on the measurement data, select a balance of a golf club suitable for the golfer, according to the one or more first indices, select at least one of a weight and a moment of inertia of a golf club suitable for the golfer, according to the one or more second indices, and select a golf club having the balance and the at least one of the weight and the moment of inertia.

Abstract: Measurement method of the temperature of a mechanical part of a wheel end of an automotive vehicle fitted with a thermal sensor method allowing a high precision measurement and broadcasting of the temperature of a mechanical part in case of an imminent thermal event while saving battery the rest of the time.

Abstract: A remote alarm for use with a wearable medical device. The remote alarm is configured to receive alarms, voice messages and prompts issued by the wearable medical device and to repeat those alarms, voice messages and prompts in a manner that can more easily be perceived by a patient wearing the wearable medical device or a bystander. The remote alarm can be configured to receive a communication from the wearable medical device, and in response, to identify one or more messages to be provided to the patient or a bystander. The messages may be provided audibly, visually, tactilely or combinations thereof. The remote alarm may further be configured to take certain actions depending upon the content of the communication, such as sending a telephone message to alert emergency personnel to the identity, location and medical condition of the patient, or sending an email.

Abstract: Described is an apparatus which comprises: a first voltage regulator (VR) having a reference input node; and a first multiplexer to provide a reference voltage to the reference input node and operable to select one of at least two different reference voltages as the reference voltage.

Abstract: In accordance with one embodiment, a method for determining changes in health of a user is disclosed. The method includes sensing multi-dimensional motion of a body part of a user to generate a first multi-dimensional motion signal at a first time and date; in response to the first multi-dimensional motion signal, generating a first neuro-mechanical fingerprint; generating a first health measure in response to the first NFP and user calibration parameters; sensing multi-dimensional motion of the body part of the user to generate another multi-dimensional motion signal at another time and date; in response to the another multi-dimensional motion signal, generating another neuro-mechanical fingerprint; generating another health measure in response to the another NFP and the user calibration parameters; and comparing the first health measure with the another health measure to determine a difference representing the health degradation of the user.

Abstract: A sensor device includes a sleeve portion adapted to receive a portion of a golf club and a plurality of grip sensors on the sleeve portion. The grip sensors are adapted to sense information associated with a user's hands gripping the sleeve portion. The sensor device further includes a sensor assembly coupled to sleeve portion. The sensor assembly is adapted to sense the movement of the golf club by the user.

Abstract: Systems and methods are provided for providing vibration transduction and radio-frequency communication in proximity to an electrically conductive structure. The system may comprise an antenna element, an electrically conductive structure in proximity to the antenna element, and a vibration transducer comprising a material. The material may comprise a ferromagnetic material with piezoelectric properties. The vibration transducer may be positioned between the antenna element and the conductive structure.

Abstract: Microwave amplifiers tolerant to electrical overstress are provided. In certain embodiments, a monolithic microwave integrated circuit (MMIC) includes a signal pad that receives a radio frequency (RF) signal, a ground pad, a balun including a primary section that receives the RF signal and a secondary section that outputs a differential RF signal, an amplifier that amplifies the differential RF signal, and a plurality of decoupling elements, some of them electrically connected between the primary section and the ground pad, others electrically connected in the secondary section to a plurality of the amplifier's nodes, and operable to protect the amplifier from electrical overstress. Such electrical overstress events can include electrostatic discharge (ESD) events, such as field-induced charged-device model (FICDM) events, as well as other types of overstress conditions.

Abstract: The present disclosure is related to a sensing device. The sensing device includes a sensor, a memory, a processor, and two radio units. A first radio unit of the two radio units is configured for bidirectional communication with an external device using a first radio communication protocol. The bidirectional communication comprises receiving configuration data from the external device via a first radio signal from the external device. The second radio unit of the two radio units is configured for unidirectional communication with the external device using a second radio communication protocol. The unidirectional communication comprises the second radio unit transmitting a second radio signal to the external device. The second radio signal communicates data including one or more measurements obtained by the sensor.

Abstract: A computer-implemented system and method for efficient navigation, location, tracking, and collocation of assets in electronic communication networks, which includes mutual tracking of target assets and tracking assets, reducing frequency and duration of radio transmission and reception of data, reducing the need for and frequency of GNSS (e.g. GPS) fixes and other power-hungry radio-based location sensing, predicting future movements of assets, and actions based on adherence to predictions of future movements of assets. Specifically, the computer-implemented system and method relates to the general use of positioning information of a second asset at a first asset to affect when the first asset obtains a NSS (i.e. a GPS) location estimate (also called a fix). The first asset can be either a tracking or a target asset, or both assets simultaneously track each other.

Abstract: The present disclosure relates to a method for transferring data between an automation field device and a communication box, wherein the method comprises: voltage modulation of the supply voltage of the field device by the communication box such that a first communication signal is produced and the supply voltage has the first communication signal; demodulation of the first communication signal from the supply voltage applied to the field device by means of the two-wire line such that the first communication signal is separated from the supply voltage; current modulation of an output current of the field device by the field device such that a second communication signal is produced and the output current has the second communication signal; demodulation of the second communication signal from the output current by the communication box such that the second communication signal is separated from the output current.

Abstract: In accordance with one embodiment, a method for determining changes in health of a user is disclosed. The method includes sensing multi-dimensional motion of a body part of a user to generate a first multi-dimensional motion signal at a first time and date; in response to the first multi-dimensional motion signal, generating a first neuro-mechanical fingerprint; generating a first health measure in response to the first NFP and user calibration parameters; sensing multi-dimensional motion of the body part of the user to generate another multi-dimensional motion signal at another time and date; in response to the another multi-dimensional motion signal, generating another neuro-mechanical fingerprint; generating another health measure in response to the another NFP and the user calibration parameters; and comparing the first health measure with the another health measure to determine a difference representing the health degradation of the user.

Abstract: An apparatus for diagnosis of a communication channel, wherein a communication signal serves for data transmission and is a frequency-modulated signal. The apparatus includes a receiving circuit, which serves for receiving the frequency-modulated signal. The receiving circuit includes a monitoring unit, which serves for determining a signal parameter of the frequency-modulated signal. The receiving circuit also includes a demodulator, which serves to demodulate the frequency-modulated signal. The receiving circuit also includes a signal processing unit, which is connected with the demodulator and with the monitoring unit, wherein the signal processing unit, at least at times, serves for evaluating the signal parameter of the frequency-modulated signal determined by means the monitoring unit and, at least at times, for evaluating the demodulated signal.

Abstract: A method includes implementing a coupled Voltage Controlled Oscillator (VCO) array with a number of VCOs, and mixing Local Oscillator (LO) signals generated through the number of VCOs of the coupled VCO array with signals from antenna elements of an antenna array to introduce differential phase shifts in signal paths coupled to the antenna elements during performing beamforming with the antenna array. The method also includes accommodating differential coupling between the VCOs to improve immunity to noise and/or interference during the beamforming compared to the VCOs accommodating single-ended coupling therebetween.

Abstract: A pulsed voltage bias method and/or pulsed light bias method may be used to reduce, minimize, and/or eliminate external quantum efficiency measurement artifacts of multi-junction solar cells, for example artifacts caused by the shunt effect. In this manner, multi-junction solar cells may be designed and constructed with improved performance, efficiency, and the like.

Abstract: A wireless communication system is disclosed. The system includes a transmitter which includes a data source configured to provide data to be transmitted, a modulator configured to modulate the data, a pre-filter configured to apply a filter to the modulated data generating pre-filtered data, and a transmitter antenna configured to receive the pre-filtered data and to transmit the pre-filtered data, the pre-filter based on a phase compensation topology that is based on channel characteristics between the transmitter and a receiver, the frequency response of the pre-filter based on spectral phase information of the channel such that the frequency response at the receiver is proportional to the magnitude of the channel frequency response.

Abstract: A detection device that detects resetting of an electric circuit breaker. The electric circuit breaker comprises fixed and moving contacts, the moving contact being movable between an open position and a closed position, a mechanism for separating the contacts, a lever for resetting the mechanism from the open position to the closed position of the moving contact, and an actuator for actuating the separator mechanism, the actuator including an electromagnetic coil and a core movable between an idle position and a working position in which the separating mechanism is actuated, the coil causing the moving core to move from idle position to working position. The detection device may comprise means to generate a resetting indication signal from an electric pulse corresponding to an electric current induced in the coil by the movement of the moving core from its working position to its idle position during resetting of the circuit breaker.

Abstract: In one embodiment, a system comprises a portable computing device comprises a housing, at least one temperature sensitive radio frequency signal source proximate the housing and at least one radio frequency interface to receive a radio signal generated by the at least one temperature sensitive radio frequency signal source.

Abstract: A telemetry system for use in a combustion turbine engine (10) having a compressor (12), a combustor and a turbine (16) that includes a sensor (306) in connection with a turbine blade (301) or vane (22). A telemetry transmitter circuit (312) may be affixed to the turbine blade with an electrical connecting material (307) for routing electronic data signals from the sensor (306) to the telemetry transmitter circuit, the electronic data signals indicative of a condition of the turbine blade. A resonant energy transfer system for powering the telemetry transmitter circuit may include a rotating data antenna (314) affixed to the turbine blade or on a same substrate as that of the circuit. A stationary data antenna (320) may be affixed to a stationary component such as a stator (323) proximate and in spaced relation to the rotating data antenna for receiving electronic data signals from the rotating data antenna.

Abstract: Systems and methods of reducing false alarms associated with a vital-sign monitor are disclosed. One or more data samples of a vital sign of a patient are generated at a first sampling rate in a normal mode of operation. Whether the one or more data samples satisfy an alert condition is determined. An alert mode of operation is entered into if the alert condition is satisfied. One or more additional data samples of the vital sign are generated at a second sampling rate higher than the first sampling rate in the alert mode.

Abstract: An irrigation control device having a modulator that modulates data onto an alternating power signal by distorting amplitude of a first leading portion of selected cycles of the alternating power signal, and permit effectively a full amplitude of the alternating power signal on a following portion of the selected cycles, wherein the first leading portion and the following portion are either both on a high side of a cycle or both on a low side of a cycle of the alternating power signal. The irrigation control device further includes an interface configured to couple the modulator to a multi-wire interface coupled to a plurality of irrigation devices to permit the alternating power signal to be applied to the multi-wire interface.

Abstract: A new coded continuous phase modulation (CPM) scheme is proposed to enhance physical layer performance of the current DVB-RCS standard for a satellite communication system. The proposed CPM scheme uses a phase pulse design and combination of modulation parameters to shape the power spectrum of CPM signal in order to improve resilience to adjacent channel interference (ACI). Additionally, it uses a low complexity binary convolutional codes and S-random bit interleaving. Phase response using the proposed CPM scheme is a weighted average of the conventional rectangular and raised-cosine responses and provides optimum response to minimize frame error rate for a given data rate.

Abstract: In a distributed meter data management (MDM) system of a smart grid, a network computing device, such as a network router deployed in the field, may receive data from one or more utility meters, sensors, control devices, or other utility data collection devices that are communicatively coupled to the network computing device. The network computing device may process the data received from the utility data collection devices to generate processed data usable by a consumer. The network computing device may also send data to and/or receive data from a centralized control system, MDM system, and/or smart grid analytic applications at a utility central office. The network computing device may then provide the processed data directly to the consumer, with or without first sending the data to a centralized MDM system of the utility.

Abstract: An RFID system using an M pulse amplitude modulation (M-PAM) or M quadrature amplitude modulation (M-QAM) scheme using a plurality of load-modulators, a plurality of antennas, and a communication method thereof are provided. The RFID system includes: an RFID tag; and a reader device communicating with the RFID device, wherein the RFID tag includes: N load-modulators an N antennas communicating with the reader device in any one scheme of M-pulse amplitude modulation (M-PAM) and M-quadrature amplitude modulation (M-QAM) in which modulation of an M level is performed and operated corresponding to the M level.

Abstract: This disclosure describes a chopper mixer telemetry circuit for use in a wireless receiver. The receiver may be located in an implantable medical device (IMD) or external programmer. The chopper mixer telemetry circuit may include a mixer amplifier that operates as a synchronous demodulator to provide selective extraction of wireless signals received from a transmitter while suppressing out-of-band noise that can undermine the reliability of the telemetry link between an IMD or programmer and another device. The mixer amplifier may utilize parallel signal paths to convert the received telemetry signal into an in-phase (I) signal component and a quadrature (Q) signal component and recombine the I and Q signal components to reconstruct the total signal independently of the phase mismatch between the transmitter and receiver. Each signal path may include a chopper-stabilized mixer amplifier that amplifies telemetry signals within a desired band while suppressing out-of-band noise.

Abstract: A vehicle control system for data exchange in a transport system, where a control unit is configured to transfer control commands to a vehicle configured to transfer status messages to the control unit, where a signal generator is connected to a first data line and a second data line and provides a changeover signal, a first switching means is arranged in the control unit and is configured to change positive half-waves of the changeover signal, and a second switching means is arranged in the vehicle and is configured to change negative half-waves of the changeover signal, in a circuit formed by the first and second data lines to transfer binary values back-and-forth between the control unit and the vehicle.

Abstract: Medical diagnostic and digital communication methods for processing in a mobile device a DNA, or blood, or heart or glucose, or body temperature or skin, or urine, or another medical device provided signal into a processed signal. Providing processed medical signals to a Code Division Multiple Access (CDMA) processor or to a Orthogonal Frequency Orthogonal Frequency Division Multiplex (OFDM) processor for processing, modulation and transmission of mobile device modulated signals in a wireless system. Processing a touch screen generated signal in mobile device into a touch screen processed signal for control of mobile device. Digital communications to and from a heart pacemaker for wireless mobile diagnostics and control of heart pacemaker.

Abstract: An apparatus for diagnosis of a communication channel, wherein a communication signal serves for data transmission and is a frequency-modulated signal. The apparatus includes a receiving circuit, which serves for receiving the frequency-modulated signal. The receiving circuit includes a monitoring unit, which serves for determining a signal parameter of the frequency-modulated signal. The receiving circuit also includes a demodulator, which serves to demodulate the frequency-modulated signal. The receiving circuit also includes a signal processing unit, which is connected with the demodulator and with the monitoring unit, wherein the signal processing unit, at least at times, serves for evaluating the signal parameter of the frequency-modulated signal determined by means the monitoring unit and, at least at times, for evaluating the demodulated signal.

Abstract: A method for synchronizing data transmitted between at least one transmit terminal (TE) and a receive terminal (TR) via a transmission channel (CD) with unmanaged latency, comprising the steps consisting in: (a) in said or in each transmit terminal, generating at least one synchronization signal (SSYNC) having a known temporal relationship with the time of transmission of at least one data packet (SEEG) to be synchronized; (b) transmitting said or each data packet to be synchronized on said transmission channel with unmanaged latency, and said or each synchronization signal on an auxiliary transmission channel (CS) with managed latency; (c) in said receive terminal, receiving said or each data packet to be synchronized and said or each synchronization signal; and (d) synchronizing said or each data packet received by said receive terminal by means of said synchronization signal. Data acquisition device for carrying out such a method.

Abstract: A method for digital data transmission from a sensor to a control unit is described, the sensor values of the sensor being divided for data transmission at different resolutions. The sensor values form a first range of values including successive sensor values. The first range of values for data transmission is divided as a function of a variable relevant for the control unit.

Abstract: A method and device for locating each of the wheels of a pair of twinned wheels mounted on a vehicle. Each twinned wheel is equipped with an electromagnetic receiving antenna, and these two twinned wheels are provided with elements of relative blocking rotation-wise designed to make it possible to obtain an offset by a predetermined angle (?), such that (?) is different from 0° and 180°, between the receiving antennas with which the two twinned wheels are equipped. The vehicle is equipped with a fixed source of emission of an electromagnetic signal suitable for covering an area passed through by the receiving antennas, and the electromagnetic field received by each of the receiving antennas is measured, so as to deduce, from the analysis of the time offset between the variations of the two measured electromagnetic fields, the location of each of the twinned wheels.

Abstract: A method and apparatus for enabling the operative association of electronic devices that each employ spread spectrum EMI noise reduction. The method includes the detection of frequency modulation and the generation of a modulation detection signal that conveys the modulation extent and type. The modulation detection signal is then used to accommodate the modulation technique and make it compatible with the receiving electronic device. The apparatus of the invention includes an FM modulator that creates an FM signal from an input signal, an FM detector that detects the FM content of the incoming signal and represent this information by means of either voltage or current signals, and a circuit to process this FM information and perform functions such as modification of the FM content and generating a new signal with this new content, complete removal of the content, and “no-action,” whereby the signal is passed on with no alteration to the content.

Abstract: The invention provides a method and circuitry for transmitting signals in a frequency-hopping, spread-spectrum, AMR network using mobile receivers operating at greater than 1 milliwatt and providing data profiling data to be read out through an I/O port or transmitted over the RF network, which may use one-way or two-way communication.

Abstract: A process variable transmitter that preferably includes a transmitter output circuit that provides bidirectional HART and controller area network communication transceiver lines. The transmitter output circuit also includes sensor circuit interface contacts. An isolated circuit couples to the sensor circuit interface contacts. The isolated circuit includes sensor circuitry sensing a process variable. The isolated circuit further comprises a galvanic isolation barrier galvanically isolating the sensor circuitry from the HART and controller area network transceiver lines. A stacked power supply provides power management. Other aspects may include a controller area network current limiter diagnostic output, timed sequencing of microcontroller startup and shutdown, a local operator interface and power management.

Abstract: A fluid power valve arrangement with at least one solenoid valve whose solenoid is connected or able to be connected via only two control lines with an electrical control and/or communication device. The solenoid valve has integrated in it a non-volatile storage device containing identification data of the solenoid valve, and furthermore a modulator for modulation of data of the solenoid valve in the two supply lines. The control and/or communication device possesses a demodulator for demodulation of the modulated data.

Abstract: An anti-theft system, especially in the form of an access and/or starting system for a vehicle has a vehicle-mounted receiver for receiving a request signal containing the instruction to find out whether objects that are associated with the vehicle, e.g. lost identifiers, are located in specific areas of the vehicle. The anti-theft system further has a vehicle-mounted control and evaluation unit for verifying whether the objects are in the specific areas of the vehicle and outputting information on whether an object that is associated with the vehicle has been found. The anti-theft system finally has a vehicle-mounted transmitter for transmitting a result signal containing the information on whether objects have been found. Such an anti-theft system allows an identifier, for example, which is associated with a user, to start a search from a distance in order to verify whether certain objects are located near or inside the vehicle.

Abstract: The communications terminal and acquisition method is for use with Continuous Phase Modulation (CPM) and Phase Shift Keying (PSK) modulation-type signals, each modulation-type signal having a respective preamble phasing sequence. The communications terminal may include a wireless communications device to receive a modulated signal having one of the CPM and PSK modulation types, and having a symbol rate. A controller may be included to cooperate with the wireless communications device to perform a transform process, such as a Fourier Transform (FT) process, on the received modulated signal to detect the modulation type and the symbol rate of the received modulated signal based upon the preamble phasing sequence. Carrier phase and frequency of the received modulated signal may be estimated based upon bin amplitudes. Also, symbol timing may be estimated based upon a phase difference between tones associated with the preamble phasing sequence.

Abstract: A two-tier communication system for a seismic streamer. The communication system operates over an unshielded twisted-pair communication line extending the length of the streamer. Repeater units having a repeater function and a device controller function divide the twisted pair into line segments. Coils on each segment couple signals inductively to collocated external devices in a low-speed 2400 baud FSK data link between the devices and an associated device controller. A Gaussian 8-level FSK high-speed 60 kbit/s data link is established along all the segments with the repeaters re-transmitting boosted signals along the entire length of the communication line. The coils are transparent at the high-speed data rate. Time division multiple access (TDMA) or frequency division multiple access (FDMA) is used to accommodate the two links on the single twisted pair.

Abstract: A method of operating a first RFID read/write device and at least one second RFID read/write device is disclosed herein. The first and second RFID read/write devices respectively comprise an RF part and a baseband part with a digital signal processor. The first and second RFID read/write devices are arranged at a usable wireless transmission distance from one another. The method comprises generating a Reader Service Signal in its baseband form in the signal processor and combining the Reader Service Signal with an RFID signal in its baseband form comprising a carrier signal, so that the RFID signal has the Reader Service Signal embedded to it in amplitude, frequency or phase. Thereafter, the RFID signal with the embedded Reader Service Signal is shifted into an RF band and the RFID signal is transmitted as a transmission signal wirelessly by the RFID read/write devices.

Abstract: An integrated circuit implements a wireless remote sensor. The wireless remote sensor includes an antenna coupled to an energy distribution unit to allow passive collection of electrical charge. A signal processing unit couples to the energy distribution unit and modulates transmission by the antenna according to a binary code.

Abstract: A solution for monitoring a property of an object and/or an area using a Micro-ElectroMechanical Systems (MEMS)-based monitoring device is provided. In an embodiment of the invention, the MEMS-based monitoring device includes a MEMS-based sensing device for obtaining data based on a property of the object and/or area and a power generation device that generates power from an ambient condition of the monitoring device. In this manner, the monitoring device can operate independent of any outside power sources or other devices. Further, the monitoring device can include a transmitter that transmits a signal based on the property. The monitoring device can be used to monitor a moving component of a machine, and can be integrated with a health monitoring system of the machine using one or more relay devices.

Abstract: A transmission system for a measurement device on a coordinate positioning apparatus comprises a station (18) mounted on the measuring device (10) and a station (20) mounted on the coordinate positioning apparatus (22), wherein the stations communicate with each other using a spread spectrum radio link, for example frequency hopping. The station on the probe sends a regular signal and on receiving the signal the station on the coordinate positioning apparatus synchronises its clock and sends an acknowledgement signal. Measurement data is either sent in the regular signal or in a measurement event driven signal.

Abstract: A process variable transmitter that preferably includes a transmitter output circuit that provides bidirectional HART and controller area network communication transceiver lines. The transmitter output circuit also includes sensor circuit interface contacts. An isolated circuit couples to the sensor circuit interface contacts. The isolated circuit includes sensor circuitry sensing a process variable. The isolated circuit further comprises a galvanic isolation barrier galvanically isolating the sensor circuitry from the HART and controller area network transceiver lines. A stacked power supply provides power management. Other aspects may include a controller area network current limiter diagnostic output, timed sequencing of microcontroller startup and shutdown, a local operator interface and power management.

Abstract: An accurate total error rate performance can be measured using a computed error vector magnitude (EVM) per stream. Using this EVM, the receiver or the transmitter can advantageously generate an optimized modulation and coding scheme (MCS) that corresponds to a specific number of streams, modulation and coding rate for the transmitter. For example, the receiver can compute an SNR from the EVM and then use an SNR vs. MCS table to determine the optimized MCS. In contrast, the transmitter can receive an EVM-to-RSSI mapping and an EVM-to-MCS mapping from the receiver. These mappings and an EVM can facilitate selecting the optimized MCS.

Abstract: A compact, solid-state THz source based on the driven Josephson vortex lattice in a highly anisotropic superconductor such as Bi2Sr2CaCu2O8 that allows cw emission at tunable frequency. A second order metallic Bragg grating is used to achieve impedance matching and to induce surface emission of THz-radiation from a Bi2Sr2CaCu2O8 sample. Steering of the emitted THz beam is accomplished by tuning the Josephson vortex spacing around the grating period using a superimposed magnetic control field.

Abstract: The invention provides a method and circuitry for transmitting signals in both a narrow band, mobile-receiver type of AMR network and also for operation in the frequency-hopping, spread-spectrum, fixed-receiver type of AMR network. Unlike systems provided with multiple transmitters, the invention provides this in a single transmitter operating with common circuitry to transmit in two modes of transmission in a single operational sequence.