Abstract: A precoding codebook matrix/vector of length 2L is generated by the selection of two matrices/vectors, each from one of a predetermined set of L×L matrices and multiplying each column of one of the matrices/vectors by a complex coefficient.

Abstract: Some embodiments relate to a method of identifying electrical devices in a power management system. The method includes accessing a controller using a server that includes identifiers of the electrical devices. The controller is electrically connected (directly or indirectly) to the electrical devices. The method further includes exchanging data between the server and the controller to correlate the identifiers with the electrical devices. The potential identifiers that may be used to correlate the identifiers with the electrical devices may be stored in an identifier database on the server. In some embodiments, the identifiers of the electrical devices may also be stored in an identifier database on the controller.

Abstract: A first wireless device including a receiver and a transmitter. The receiver includes a channel estimation module configured to receive, from a second wireless device over a communication channel, a training packet and estimate a quality of the communication channel based on the training packet, and a modulation and coding scheme (MCS) determination module configured to determine an MCS based on one or more of the training packet and the estimated quality of the communication channel. The transmitter is configured to transmit, to the second wireless device over the communication channel, an indication of the MCS determined by the MCS determination module.

Abstract: A method includes determining parameters corresponding to a communication channel, transmitting the parameters from a first wireless device to a second wireless device via the communication channel, wherein the parameters include at least one of (i) an estimated quality of the communication channel or (ii) a modulation and coding scheme (MCS) for transmission via the communication channel, receiving the parameters at the second wireless device, and based on at least one of the parameters, selecting a MCS for transmission from the second wireless device to the first wireless device via the communication channel.

Abstract: Architecture for accelerating video compression by using the motion vectors produced locally by a camera is disclosed. Video frames are captured by the camera (e.g., a webcam) which also computes a motion vector for the frames. Metadata can also be generated that represent an index of motion quality associated with the motion vector. The motion vector is passed to a video compression engine which selectively uses the motion vector directly or alternatively as a seed for a compression and encoding algorithm. This algorithm produces a compressed video frame representing a motion estimate having a selected motion quality index value. In this way, complexity is reduced in the video compression engine, resulting in faster and more efficient video compression. Alternatively, the webcam sends a compressed video bitstream to reduce throughput on the connection and the receiving computing system processes residual information to derive an estimate of the quality index for each macroblock/kernel.

Abstract: A method of processing broadcast data in a broadcast transmitting system is presented. The method includes performing Reed-Solomon (RS) encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data bytes to generate an RS frame, wherein the RS frame comprises an RS frame payload including the mobile service data bytes, RS parity data bytes added at bottom ends of columns of the RS frame payload and CRC data bytes added at right ends of rows of the RS frame payload having the RS parity data bytes, dividing the RS frame into a plurality of portions, wherein each of the plurality of portions has an equal size of data bytes, converting the data bytes of the plurality of portions into data bit, and encoding each of the data bits at a code rate of 1/H to output data symbols, wherein H is greater than 1.

Abstract: A coherent bandwidth calculation unit (41) calculates a coherent bandwidth based on a channel response in the time domain obtained from reception signals (R1-RN) for each path between transmitting antennas and receiving antennas. A weight calculation control unit (42) determines target subcarriers of equalization weight calculation based on the coherent bandwidth. A weight calculation unit (31) calculates the equalization weight of each target subcarrier. A weight interpolation unit (43) performs interpolation processing using the equalization weights so as to obtain equalization weights for the subcarriers that have not undergone equalization weight calculation yet.

Abstract: There are obtained a transmitting apparatus capable of easily notifying information regarding radio waves required for an objective apparatus, a communication apparatus or a receiving apparatus capable of easily setting a frequency required at each place. a communication system or a broadcast receiving system employing the transmitting apparatus, the communication apparatus, and the receiving apparatus; and a control program, a communication method, and a broadcast receiving method to be used in the communication apparatus or the receiving apparatus. The radio wave tower 101 transmits not only radio waves for the television and the radio, but also the radio wave information 104 for communication and for reception of broadcasts by use of the radio wave information transmitting apparatus 102. For example, the portable terminal 106 first receives the radio wave information 104 in a new place and then obtains a center frequency based on the information for communication with the base station 110.

Abstract: Some demonstrative embodiments include devices, systems and/or methods of simultaneously communicating with a group of wireless communication devices. For example, a device may include a wireless communication unit to transmit at least one beamforming-training initiation frame to a group of a plurality of wireless communication devices, wherein the wireless communication unit is to receive two or more feedback frames from two or more of the wireless communication devices, wherein the wireless communication unit is to determine two or more beamforming schemes based on the two or more feedback frames, and wherein the wireless communication unit is to simultaneously transmit two or more different wireless communication transmissions to the two or more wireless communication devices, respectively, using the two or more beamforming schemes, respectively. Other embodiments are described and claimed.

Abstract: An energy management system (400) includes a series of smart devices (404) connected through a network system communications bus (402). The smart devices (404) are connected to loads (408) and include energy monitor boards (448) and a core board (450) for monitoring energy consumption of the loads (408) and transmitting the energy consumption data to a gateway (410).

Abstract: Herein described are at least a method and a system for transmitting high speed wireless data from a first communication device to a second communication device. The method comprises using a first physical layer for transmitting management data or control signals between the first and second devices. In one embodiment, the management data may be used to authenticate and assign an appropriate wireless communication channel between the first and second device. The wireless communication channel is established by implementing a second physical layer in each of the first and second devices. The wireless communication channel may be used to transmit the high speed wireless data. The system comprises a first communication device and a second communication device wherein each of the first communication device and the second communication device utilizes a first physical layer and a second physical layer.

Abstract: A technique for operating a wireless communication device includes assigning a reference signal bandwidth to a reference signal. Cyclic shift control bits (associated with the reference signal) are then allocated based on the assigned reference signal bandwidth. The allocated cyclic shift control bits specify a cyclic shift associated with the reference signal.

Abstract: A device for processing data which is to be transmitted by radio, with the data to be transmitted being in the form of a digital baseband signal (DAT1), has a filter unit (301) for pulse shaping and oversampling of the digital baseband signal (DAT1), a predistortion unit (302, 303) for predistortion of the filtered and oversampled digital baseband signal (DAT2), and a control unit (304, 313) for controlling the predistortion unit (302, 303) as a function of the digital baseband signal (DAT1).

Abstract: there is provided a spreading apparatus using a child orthogonal variable spreading factor (OVSF) code pair, including: a channel condition information receiving unit for receiving channel condition information including a channel condition metric; a switch controlling unit for receiving the channel condition information from the channel condition information receiving unit and transferring data stream according to the received channel station information; a first spreading unit for receiving the data stream from the switching controlling unit, and spreading the data stream using a single OVSF code; and a second spreading unit for receiving the data stream from the switching controlling unit, and spreading the data stream using a child OVSF code pair.

Abstract: This invention concerns a wireless data communication method, wherein a transmitter device having a first wide band antenna transmits ultra-wide band coded data signals to a receiver device having a second wide band antenna for receiving the direct and/or multiple path coded data signals. The transmitted data is defined by one or several sequences of N pulses where N is an integer number greater than 1. The arrangement of the N pulses of each sequence represents a data coding relative to the transmitter device. The N pulses of a sequence of direct and/or multiple path coded data signals received by the receiver device are processed each in one among N corresponding reception time windows. Each of the N reception time windows is positioned in time based on a known theoretic arrangement of the N pulses of signals transmitted by the transmitter device.

Abstract: A system and method for dynamically varying traffic channel sectorization within a spread spectrum communication system is disclosed herein. In a preferred implementation the system is operative to convey information to at least one specified user in a spread spectrum communication system and includes multiple antennas, each having an associated coverage area, and each coupled to an antenna driver. The antenna drivers each include a delay element and an input summation node. A switching transmission network is disposed to selectively transmit via antennas. Selective transmission of signals results in variation in size of a given user sector. In another aspect, the system may be configured to selectively receive, and coherently combine, signals from different coverage areas.

Abstract: Transmitter device including a modulator apparatus for the generation of a modulated digital signal in a remote control system. The modulated signal is defined by at least one characteristic quantity correlated to an information to transmit. The modulator apparatus is characterized by including a finite states machine for generating a modulating digital signal to combine with a carrier signal and obtain the modulated signal. The finite states machine generates the modulating signal on the basis of digital data corresponding to said at least one characteristic quantity.

Abstract: A security code transmitter is provided to transmit a control signal to a barrier movement operator to controlling movement of a movable barrier. The barrier movement operator is proximate to a wireless communication network having a network ID. A receiver of the security code transmitter receives a transmitted network signal comprising the network ID from the wireless communication network. A memory of the security code transmitter stores a predetermined ID. A processor of the security code transmitter determines whether the wireless network ID of the transmitted network signal matches the predetermined wireless network ID. When a match is determined, the security code transmitter is controlled to transmit the control signal to the barrier movement operator.

Abstract: A data receiving device is provided enabling a reduction in the time required for extracting a partial band signal, and capable of being easily made in a simple structure as an LSI device without requiring a plurality of analog circuits having the same characteristics. The data receiving device includes: a first sampler for sampling an in-phase signal I(t) at every predetermined sampling period and outputting the sampled in-phase signal; a second sampler for sampling a quadrature signal at every predetermined sampling period and outputting the sampled quadrature signal; a partial band extracting section structured by a complex filter for extracting partial band signals IBr, QBr from frequency components included in the sampled in-phase signal and the sampled quadrature signal; and first and second delay detection operating sections for performing a delay detecting process based on the partial band signals and outputting detection signals.

Abstract: A system for economically extending the effective operational range of an infrared remote control system having a remote control unit with an infrared transmitter, and a controlled device having an infrared receiver. The system includes a first transmitter to receive IR signals from the remote control unit and transmit an RF output signal corresponding to the infrared signal received from the remote control unit. The RF signal is received by an RF receiver which generates a second IR signal corresponding to the received radio signal. The second IR signal is transmitted to and received by the IR controlled device. In some cases, the first IR control signal, and in all cases, the RF, signal include information/data concerning the IR carrier frequency.

Abstract: The invention reduces transient peaks in signals transmitted in CDMA communication systems. A plurality of spread spectrum data signals are combined into a combined signal having fluctuating power level corresponding to the combination of the data signals. The combined signal is modulated to produce an RF signal for transmission. The average power of the combined signal is measured over a selected time period. The combined signal power level is adaptively limited to a calculated power level based at least in part on the measured power.

Abstract: A data transmission system (200) includes a data transmission terminal (201) and a portable data device (203) that is remotely powered by the terminal. A method is provided for supplying power and data from the terminal (201) to the portable data device (203) using a carrier signal (401), including the step of identifying a slot location into which a modulation discontinuity (403-409) is introduced. The slot location is chosen within a modulation frame, which is based on n bits of the information signal to be transmitted, the number of slots in the frame varying between 1 and 2n. The modulation discontinuity (403-409) is introduced into the chosen slot location to produce an encoded data stream, which is then transmitted to the portable data device.

Abstract: A remote control apparatus for a digital cable television system and a method thereof which are capable of inserting and transmitting a control data into each channel of a head end (HE) which is an output unit of a transmitting unit and modulating a state checking data of a receiving unit for a VSB/QAM receiving unit based on a QPSK method, thus upwardly transmitting the date, whereby it is possible to remotely control and monitor a VSB/QAM receiving unit without additionally allocating a frequency band width.

Abstract: A transmitter unit generates a carrier signal in the form of a periodic bipolar signal. The carrier signal has intrapulse periods between two pulses of different polarity. A transmission antenna is operated with the bipolar signal. To prevent the harmonic oscillations of the transmitted signals from having excessively great amplitudes, the intrapulse period is defined such that the amplitude of the first harmonic of the transmitted oscillation, ascertained by Fourier analysis, is greater than 90% and the amplitude of the third harmonic oscillation is less than 25%, in comparison with the amplitude of the fundamental oscillation of a rectangular oscillation without intrapulse periods.

Abstract: A low power transmitter for use in a vehicle security system includes an oscillator that is isolated from a transmitter antenna. An amplifier is coupled between the oscillator and the antenna to achieve the isolation. The amplifier and the isolator are tied to a single signal source so that each is initiated at the same time. The amplifier has a faster turn-on time than the oscillator so that the amplifier is fully operational at the instant it receives an output signal from the oscillator. The amplifier amplifies the single frequency of the oscillator and that amplified signal is transmitted by the antenna to a controller, which responsively controls the vehicle security system.

Abstract: An arrangement for controlling the activation of an electrical appliance. The arrangement utilizes a capacitive sensor to recognize the physical proximity of a user (e.g., a hand) to an internal capacitive sensing means. The capacitive change is applied as an input to an electrical control circuit so as to ultimately provide an electrical control signal to an associated electrical appliance. The arrangement does not require direct physical contact to activate any appliance, and may be used to control various power levels associated with a particular electrical appliance (e.g., light intensity for a "dimmer" switch, sound volume for an audio system, activation and trigger signals to an alarm system). The arrangement may be embedded within the wall of a structure (i.e., not visible) and still provide the capacitively-activated control function.

Abstract: An infrared remote-control receiver employs at its front end a gyrator-configured transistor operating as a current-to-voltage converter, but derives its data information from a negative-going gyrator output pulse in preference to the more conventionally used positive-going pulse. This negative-going pulse may be wider than the positive-going pulse and reduces the bandwidth demand on subsequent processing circuitry. This enables low-bandwidth, low-current hardware to be used which makes the receiver ideal for use in battery-operated systems. Also, the negative-going pulse is easier to detect, as it directly follows a disturbance known to be in the opposite direction. The result is an increased receiver sensitivity.

Abstract: A device for transmitting binary information, in the form of two information-carrying symbols, between two or a number of units, in which transmission is by optical means in free medium, includes an optical transmitter module with a transmitter unit for transmitting an optical transmission signal and an optical receiver module with a receiver unit for receiving the optical transmission signal, and the device is arranged for high speed communications without a carrier wave. The transmitter module is equipped with a formatting unit devised to activate the transmitter unit to emit the transmission signal only during part of a complete symbol interval corresponding to one of the symbols, and the receiver module is equipped with a normalizing unit devised to recreate, from the transmission signal received by the receiver unit, both the symbol corresponding to the transmission signal throughout its entire symbol interval and the residual information-carrying symbol in the digital information.

Abstract: A radio modulator/demodulator particularly suitable for TDMA mobile telephone use employs digital techniques for GMSK phase modulation. Phase numbers representative respectively of an intermediate frequency carrier and modulation symbols are combined digitally to combination phase numbers which are subjected to a single folded cosine table to produce a digital trignometric sequence of numbers for modulating the transmitter. Economy of components and memory is achieved and some of the modulator components are used in demodulation which is effected by the single look-up table used in sine and cosine mode alternately.