Abstract: A barrier layer and corresponding method of making provide anti-inflammatory, non-inflammatory, and anti-adhesion functionality for a medical device implantable in a patient. The barrier layer can be combined with a medical device structure to provide anti-adhesion characteristics, in addition to improved healing, non-inflammatory, and anti-inflammatory response. The barrier layer is generally formed of a naturally occurring oil, or an oil composition formed in part of a naturally occurring oil, that is at least partially cured forming a cross-linked gel. In addition, the oil composition can include a therapeutic agent component, such as a drug or other bioactive agent.

Abstract: An apparatus for providing an autonomous fire extinguishing system including a tank filled with an extinguishing agent with a targeting system with independently mounted targeting servos and targeting gimbal to position an emitter and an infra-red camera. A microcontroller provides control signals to the targeting servos and an actuation valve. One or more heat sensors, smoke detectors, humidity sensors, and/or carbon monoxide detectors are electrically connected to the microcontroller; and the microcontroller continuously reads in the sensor data till appropriate conditions indicating a potential fire are detected; these appropriate can be based on temperature, rate of temperate increase, smoke levels, humidity, and/or carbon monoxide levels. Once the appropriate conditions are detecting, the microcontroller commands the targeting gimbal to position the infra-red camera to a number of calculated positions, taking infra-red pictures covering the environment requiring protection.

Abstract: A barrier layer and corresponding method of making provide anti-inflammatory, non-inflammatory, and anti-adhesion functionality for a medical device implantable in a patient. The barrier layer can be combined with a medical device structure to provide anti-adhesion characteristics, in addition to improved healing, non-inflammatory, and anti-inflammatory response. The barrier layer is generally formed of a naturally occurring oil, or an oil composition formed in part of a naturally occurring oil, that is at least partially cured forming a cross-linked gel. In addition, the oil composition can include a therapeutic agent component, such as a drug or other bioactive agent.

Abstract: A system for providing an automatic fire extinguishing system including a tank filled with an extinguishing agent with a targeting system with independently mounted targeting servos and targeting gimbal to position an emitter. A microcontroller provides control signals to the targeting servos and an actuation valve. A plurality of temperature sensors electrically connected to the microcontroller send temperature data to the microcontroller which calculates target angles and sends the target angle to the targeting gimbal. The emitter is positioned by the targeting servo positioning the targeting gimbal armatures to the target angles. The microcontroller compares sensor temperature data a predetermined temperature value and sends an open signal to the actuation valve when a sensor temperature data is greater than the predetermined temperature value. The extinguishing agent flows from the tank to the emitter, where it is discharged.

Abstract: A method (500) for estimating at least one offset in a subcarrier that is subject to distortion in a multicarrier communication system. The method comprises receiving a plurality of subcarriers wherein the plurality of subcarriers contain the subcarrier that is subject to the distortion; and generating a plurality of first channel estimates for a respective plurality of received subcarriers that are not subject to the distortion. The method further comprises processing a number of the plurality of first channel estimates for the respective plurality of received subcarriers that are not subject to the distortion to generate a second channel estimate for the subcarrier that is subject to the distortion; and estimating an offset associated with the subcarrier that is subject to the distortion.

Abstract: A method (500) for estimating at least one offset in a subcarrier that is subject to distortion in a multicarrier communication system. The method comprises receiving a plurality of subcarriers wherein the plurality of subcarriers contain the subcarrier that is subject to the distortion; and generating a plurality of first channel estimates for a respective plurality of received subcarriers that are not subject to the distortion. The method further comprises processing a number of the plurality of first channel estimates for the respective plurality of received subcarriers that are not subject to the distortion to generate a second channel estimate for the subcarrier that is subject to the distortion; and estimating an offset associated with the subcarrier that is subject to the distortion.

Abstract: The present invention relates to estimating and correcting for frequency offset errors in wireless receivers, and is particularly but not exclusively related to MIMO WLAN applications. The present invention provides an improved method of tracking receiver frequency offsets in a receiver for MIMO systems. These receiver based frequency offset components are caused by errors or inaccuracies in various receiver sub-systems such as phase lock loops or carrier frequency oscillator error, and sampling clock rate errors. The frequency offsets due to each of a number of receiver sub-systems are estimated by monitoring frequency offsets on a number of channels or subcarriers (such as OFDM pilot channels) on different frequencies. These channel frequency offsets are preferably estimated by detecting the phase rotation between adjacent pilot symbols on each respective channel. They are then weighted according to a quality parameter of the estimates, which corresponds to their accuracy.

Abstract: A lattice reduction device is described for determining a reduced lattice for a MIMO decoder. The device comprises a data processing element operable to receive matrix information and to apply one or more data processing operations on the matrix information. The device further comprises first and second parallel operation means operable in conjunction with the data processing element so that any operation carried out by said data processing element on said matrix information is directly matched by an operation carried out on respective matrix information. The data processing element is operable, on an input triangular matrix being an R component of a QR decomposition of a channel state matrix, to tend non diagonal elements of said triangular matrix towards zero on the basis of matrix column operations and to make corresponding column operations at said first and second parallel operation means.

Abstract: Lattice reduction aided MIMO detection is disclosed for a packet based signal comprising a header and one or more data symbols. The detector comprises a pre-processing section operable to derive channel decoding information on the basis of a channel estimate from the header, storage means operable to store the channel decoding information, and a data processing section operable to process the one or more data symbols with reference to the stored channel decoding information.

Abstract: A communications system including a transmitting device having plural transmit antennas and a receiving device having plural receive antennas. When it is determined that an error has occurred in a first data transmission attempt in which data signals are transmitted from a first selection of transmit antennas for receipt at a second selection of receive antennas, a second data transmission attempt is performed in which the data signals are re-transmitted from a third selection of transmit antennas for receipt at a fourth selection of receive antennas. Before the second transmission attempt, a reconfiguration operation is performed to ensure the channel response between the transmit and receive antennas selected for the first transmission attempt is different to the channel response between the transmit and receive antennas selected for the second transmission attempt. Data is then recovered at the receiving device using information from the first and second transmission attempts.

Abstract: In a lattice-reduction-aided receiver based wireless communications system, outputs are determined on the basis of a received signal, the received signal being modulated onto a plurality of sub-carriers.

Abstract: In a lattice-reduction-aided receiver based wireless communications system, soft estimates of transmitted bit values are determined from a received signal by applying lattice reduction to the channel estimate and equalising the received signal in accordance with the reduced basis channel, and determining probabilities of transmitted bits having particular values. The method includes selecting an initial candidate vector in the reduced basis and determining further candidate vectors in the reduced basis dependently of the initial candidate vector, determining a corresponding transmitted symbol vector for each candidate vector and, on the basis of the received signal determining the probability of each transmitted bit value having been transmitted and log-likelihood ratios of transmitted bits.