Abstract: A process for cooperative aerial inter-antenna beamforming for communication between (a) multiple moving platforms, each platform having an aerial antenna mounted thereon, such that the aerial antennas have variable positions and orientations over time, and (b) at least one antenna mounted on user equipment having a lower altitude than the aerial antennas; the process involving transmitting data relating to the positions and orientations of the aerial antennas to a processing system, the processing system calculating and transmitting beamforming instructions to the aerial antennas, the aerial antennas thereby transmitting or receiving respective component signals for each user antenna, the component signals for each user antenna having essentially the same information content but differing in their phase and usually amplitude, so as to form a cooperative beam from the cooperative sum of the signals between the aerial antennas and the user antenna.

Abstract: A system and method for implementing a distributed source coding quantization scheme is provided. In one example, two independent but statistically correlated data sources can be asymmetrically compressed so that one source is compressed at a higher ratio than the other. The resulting signals are transmitted and decoded by a receiver. The highly compressed source can utilize the non-highly compressed source as side information so as to minimize the compression loss associated with the higher compression ratio. A conditional codebook can be created that not only depends on the highly compressed quantizer, but also depends on the quantized symbol received from the non-highly compressed data source.

Abstract: A process for cooperative aerial inter-antenna beamforming for communication between (a) multiple moving platforms, each platform having an aerial antenna mounted thereon, such that one or more aerial antennas have variable positions and orientations over time, and (b) first and second antennas connected to user equipment having a lower altitude than the aerial antennas; the process involving transmitting data relating to the positions and orientations of the aerial antennas to a processing system, the processing system calculating and transmitting beamforming instructions to the aerial antennas, the aerial antennas thereby transmitting or receiving respective first component signals for the first user antenna, and transmitting or receiving respective second component signals for the second user antenna, the first component signals each having essentially the same information content but differing in their phase and usually amplitude, the second component signals each having essentially the same information c

Abstract: A method for receiving a signal by a first terminal in a wireless communication system supporting non-orthogonal multiple access (NOMA) according to an embodiment of the present invention comprises the steps of: receiving a NOMA signal in which signals for each of the first terminal and a second terminal belonging to the same NOMA pair are superposed; and demodulating the signal for the first terminal from the NOMA signal, using at least a part of a NOMA constellation which is configured by considering downlink transmission power and a modulation order for the second terminal, wherein only a bit corresponding to one digit is differently configured between the bit sequences of NOMA constellation points adjacent to each other in the NOMA constellation, and the complex coordinates (I, Q) of the NOMA constellation points are determined on the basis of a combination of downlink transmission power for the first terminal and the downlink transmission power for the second terminal.

Abstract: A communication control device includes a synchronization detection unit that detects a synchronization timing from a synchronization signal, and a transmission control unit that causes a communication unit to transmit a control signal, for changing a communication route of data to which a flag specified on the basis of the synchronization signal is added, to a network switch performing relay between a reception device and a plurality of transmission devices transmitting the data to which the flag is added while changing the flag at the synchronization timing. The control signal is transmitted at a timing corresponding to the synchronization timing.

Abstract: A receiver includes: an A/D converter that performs an analog digital conversion of an input signal; an equalizer that equalizes an output from the A/D converter, eliminates inter code interference and obtains a data output; a timing recovery part that generates a recovery clock from the data output of the equalizer; a detector that detects the timing when an input signal varies from a no-signal state and has reached a predetermined threshold; and an initial phase setting part that sets as the initial phase of the recovery clock by the timing recovery part, a timing when the predetermined time has elapsed after the timing detected by the detector.

Abstract: System for adjusting a reference constellation for demodulating an optical signal include a coherent electro-optical receiver configured to convert a received optical signal to a plurality of electrical signals, an array of analog-to-digital convertors configured to digitize the plurality of electrical signals, and processor logic. The processor logic is configured to process the digitized plurality of electrical signals using a reference constellation to yield a plurality of decoded signals and a signal quality measurement. The reference constellation includes an inphase component equal to an ideal inphase component plus an inphase offset and a quadrature component equal to an ideal quadrature component plus a quadrature offset. The processor logic is configured to determine an optimal inphase offset and optimal quadrature offset. The processor logic is configured to update the reference constellation using the optimal inphase offset and the optimal quadrature offset.

Abstract: Provided is a high speed phase shift keying modulator. The high speed phase shift keying modulator has variable pipeline buffers formed at an input side and an output side of a bandlimiting filter and a compensation filter to ensure timing margins of the bandlimiting filter and the compensation filter, so that a ultra-high speed phase shift keying modulator is provided.

Abstract: A method for receiving a signal by a station (STA) in a wireless LAN system according to an embodiment of the present invention comprises the steps of: receiving a multi-user (MU) frame including a SIG-A field, a SIG-B field and a short training field (STF), and a long training field (LTF) that provides training symbols; and performing blind-decoding of the SIG-B field using a group ID assigned to the STA, wherein the SIG-B field includes information on the number of streams assigned to each of multiple stations that receive the MU frame, and the starting position of a training symbol interval for the STA in the LTF is implicitly indicated by the number of streams assigned to each of other stations in the same group, which share the group ID with the STA, and the order in which the streams are assigned to the STA in the same group.

Abstract: Aspects of the subject disclosure may include, a system configured for receiving modulated signals operating in a first plurality of frequency bands, and utilizing a plurality of signaling protocols, selectively converting the plurality of modulated signals to a plurality of frequency converted signals, wherein the second plurality of frequency bands differs from the first plurality of frequency bands, selectively assigning at least one of the second plurality of frequency bands to each of a respective one of a plurality of antenna systems, and transmitting a reference signal with the plurality of frequency converted signals for receipt by a respective one of the plurality of antenna systems. Other embodiments are disclosed.

Abstract: A method (700) includes receiving (701) a receive signal (x[n]) comprising a periodic data signal component (r[n]) and a periodic interference signal component (s[n]); determining (702) an average value by averaging over sub-samples of the receive signal (x[n]), wherein the average value is independent of at least one sub-sample of the receive signal (x[n]) having a same phase as a particular sample ([n]) of the receive signal (x[n]); and determining (703) for the particular sample ([n]) of the receive signal (x[n]) an estimate (?[n]) of the interference signal component (s[n]) based on the average value.

Abstract: A digital repeater system for repeating RF signals can include a receiving section for receiving an RF input signal that includes a frequency band with at least one subband associated with a communication channel of a telecommunications network. The receiving section can digitize the RF input signal to obtain a digital signal. A filter device includes a digital filter with a passband for filtering the digital signal. The digital filter is configurable by setting filter coefficients. A gain control device can set the gain of at least a portion of the digital signal. A transmitting section can transmit an RF output signal and can convert the digital signal to the RF output signal for transmission. A control unit can configure the filter coefficients of the digital filter based on the gain setting of the gain control device.

Abstract: Systems and methods for communicating a signal over a fuel line in a vehicle are provided. In one embodiment, a system can include a fuel line. The fuel line can include at least one communication medium for propagating a communication signal. The system can also include at least one signal communication device configured to receive the communication signal communicated over the fuel line. The system can also include at least one vehicle component in communication with the at least one signal communication device.

Abstract: For example, a wireless station may be configured to modulate a plurality of data bit sequences into a plurality of data blocks according to a dual carrier modulation, to map the plurality of data blocks to a plurality of spatial streams according to a space-time diversity scheme, and to transmit a MIMO transmission based on the plurality of spatial streams.

Abstract: A method allowing a receiver device of a wireless communication system to receive a useful signal emitted by an emitter device. The useful signal corresponding to a signal, the phase or frequency of which is modulated by a sequence of two-state symbols corresponding to a sequence of binary data. A temporal envelope of the useful signal is detected and compared to a preset threshold value. Transitions between consecutive useful-signal symbols are detected, on the basis of the result of the comparison. A sequence of binary data is extracted from the useful signal depending on the detected transitions.

Abstract: The present application discloses a UE, network node, and method for determining a transmitting manner of a downlink signal of a cell. The UE obtains first attribute indication information of a first cell, where the first cell is any cell other than a cell serving the UE, and the first attribute indication information of the first cell includes at least one of: a radio access standard supported for signal transmitting by the first cell, a frequency band supported for signal transmitting by the first cell, an PCI supported for signal transmitting by the first cell, a modulation mode supported for signal transmitting by the first cell, or an MIMO antenna mode supported for signal transmitting by the first cell; and the UE determines a transmitting manner of a downlink signal of the first cell according to the obtained first attribute indication information of the first cell.

Abstract: Diversity receiver front end system with variable-gain amplifiers. A receiving system can include a controller configured to selectively activate one or more of a plurality of paths between an input of a first multiplexer and an output of a second multiplexer. The receiving system can further include a plurality of bandpass filters, each one of the plurality of bandpass filters disposed along a corresponding one of the plurality of paths and configured to filter a signal received at the bandpass filter to a respective frequency band. The receiving system can further include a plurality of variable-gain amplifiers (VGAs), each one of the plurality of VGAs disposed along a corresponding one of the plurality of paths and configured to amplify a signal received at the VGA with a gain controlled by an amplifier control signal received from the controller.

Abstract: A method and apparatus for equalization in a communication system. The method includes receiving an input of a block of symbols, filtering the input in the frequency domain, calculating an error factor in the time domain based on the filtered input, updating tap weights of the equalizer in the frequency domain using circular correlation based on the error factor and the conjugate of the input in the frequency domain, and outputting the filtered input.

Abstract: A method and apparatus for equalization in a communication system. The method includes receiving an input of a block of symbols, filtering the input in the frequency domain, calculating an error factor in the time domain based on the filtered input, updating tap weights of the equalizer in the frequency domain using circular correlation based on the error factor and the conjugate of the input in the frequency domain, and outputting the filtered input.

Abstract: The present invention is directed to a method, an apparatus and a system for error-free detection of bit values which are transmitted using a continuous data signal. For this purpose, a particularly advantageous metric is proposed, which makes a conclusion possible as to an optimum time for sampling the data signal and thus makes it possible to detect the bit value unambiguously.