Abstract: We provide a method of compressing a data stream for transmission, including: generating a data sequence representing a received data stream, generating a plurality of data substreams, each comprising a portion of the data sequence, identifying a formal concept defining a dependency between a first one of the data substreams and one or more further ones of the data substreams that are dependent on the first data substream, removing those dependent data substreams from the plurality of data substreams, and transmitting the remaining data substreams, and a method of reconstructing a data stream at a receiver, including: receiving a received data sequence representing a received data stream, identifying that a substream has been removed from the data stream prior to transmission, identifying a formal concept definition for regenerating the removed substream based on an identified substream of the received data sequence, regenerating a data substream using the formal concept definition and the identified substrea

Abstract: Indication of an amount of processing performed in detection and removal of ingress noise may be provided. A frequency domain representation of a narrowband region of a digital input signal may be received. The received frequency domain representation of the narrowband region may be compared with a predetermined threshold. Results from the comparison of the received frequency domain representation of the narrowband region with the predetermined threshold may be aggregated. Based on the aggregated results, an indication of an amount of processing performed by an ingress exciser in removing the ingress noise may be provided.

Abstract: The present disclosure relates to a non-uniform antenna array and signal processing therefor. Specifically disclosed is a device at a transmitting end, comprising a plurality of antenna elements arranged in a vertical direction. Spaces between adjacent antenna elements of at least a part of the plurality of antenna elements increase gradually in a first direction.

Abstract: Examples described herein include Weighted Overlap Beamform and Add techniques for calculating frequency-localized weights for adaptive beamformers. Intermediate weights are calculated for overlapping subbands (e.g., using a least-squares solution or a windowed least-squares solution). Each set of intermediate weights may be multiplied by an overlap factor, and combined to provide final weights for a subcarrier.

Abstract: Systems and methods are provided for spreading symbols over multiple time-frequency resources that rely on simple base constellations that can be sent over a frequency tone or time slot. A set of input bits (or an input symbol) are mapped to K symbols, and a symbol-to-resource-element mapping is applied that maps the K symbols to resource units. The mapping to the K symbols may be a linear mapping that maps an input symbol to K target tones through a 2K×2 real matrix, where input symbol is a complex point in a base constellation, and is considered as a 2-dimensional real vector. Up to K co-orthogonal 2K×2 real matrices (whose columns are orthogonal to each other) can be associated with the subset of K target tones. Each of the K co-orthogonal matrices can be used for mapping of an independent symbol from a separate steam of symbols which can be associated to a single UE or separate UEs.

Abstract: The present invention relates to a field programmable gate array system that provides phase control with minimal latency.

Abstract: A method may include receiving a stream of serial pulse-density modulation (PDM) data representing a first channel of data synchronized with a rising edge of a clock associated with the serial PDM data and a second channel of data synchronized with a falling edge of the clock, wherein each of the first channel of data and the second channel of data include encoded datagrams wherein each encoded datagram comprises more than one digital bit, detecting an invalid state associated with the stream, and responsive to detecting the invalid state, determining boundaries of each encoded datagram of the stream based on where within the stream the invalid state occurred.

Abstract: A method uses a controlled oscillator to output an oscillation signal in accordance with a control signal. The method operates by using a first divide-by-1.5 circuit to convert the oscillation signal into a first divided-down signal, using a second divide-by-1.5 circuit to convert the first divided-down signal into a second divided-down signal, using a divide-by-2 circuit to convert the second divided-down signal into a LO (local oscillator) signal, using a modulator to modulate the LO signal into a RF (radio frequency) signal in accordance with a baseband signal, and using a controller to establish the control signal in accordance with a relative timing between a reference signal and the oscillation signal.

Abstract: A method and apparatus for transferring data maps the data to a modulation code using an encoder circuit having a configuration. A binary symbol of the data is mapped to a modulation code having a plurality of modulation digits and a modulation signal is generated based on the modulation code. A transmitter drive signal is modulated based on the modulation signal. A configuration of the encoder circuit is set based on a determined performance level. The transmitter drive signal may be used to produce an electromagnetic field by generating a positive, negative or zero electrical current in an induction coil of a first semiconductor die. A current induced by the electromagnetic field in an induction coil of a second semiconductor die is demodulated to recover the data whereby the data is transferred from the first semiconductor die to the second semiconductor die.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network controller may determine a first set of spreading sequences and a second set of spreading sequences for non-orthogonal multiple access (NOMA) communication, wherein the first set of spreading sequences is different than the second set of spreading sequences; and configure a first cell to use the first set of spreading sequences and a second cell to use the second set of spreading sequences; or configure the first set of spreading sequences to be used for first user equipment associated with a cell center of the first cell and the second set of spreading sequences to be used for second user equipment associated with a cell edge of the first cell or the second cell. Numerous other aspects are provided.

Abstract: Embodiments are disclosed for tuning a continuous time linear equalizer embedded in a receiver of a communication system. An example method includes receiving an N-point estimation of a channel pulse response associated with an input signal. The method further includes calculating an estimated power spectral density for one or more desired frequency bands. The method further includes updating one or more parameters of a continuous time linear equalizer to adjust one or more power densities of the one or more desired frequency bands based on the one or more estimated power spectral densities calculated. The method further includes calculating, for each desired frequency band, an estimated power spectral density after updating the one or more parameters of the continuous time linear equalizer to adjust the one or more power densities of the one or more desired frequency bands.

Abstract: The present invention relates to a field programmable gate array system that provides phase control with minimal latency.

Abstract: Physical layer processing methods for network acquisition by remote nodes in wireless communication systems are described herein. New methods for wireless network discovery and synchronization by remote nodes are described herein that utilize spatial (e.g., antenna array) processing algorithms which may achieve enhanced functioning in challenging radio frequency environments, such as those containing interference and multi path distortion effects. These methods may include advantageous use of spatial whiteners and associated pluralities of adaptive beamformers to detect network reference and synchronization signals and estimate their parameters.

Abstract: A wireless communication device for transceiving signals by using carrier aggregation is provided. The wireless communication device includes a first antenna configured to transmit a first signal to an outside of the wireless communication device or receive a second signal from the outside; a first transmitter connected to the first antenna via a first node and configured to generate the first signal by combining plural transmitting carrier signals received over a plural transmitting carriers; and a first receiver connected to the first antenna via the first node and configured to divide the second signal into a plural receiving carrier signals received over a plural receiving carriers. The first receiver includes a first receiving amplifier commonly connected to a plural carrier receivers configured to amplify the second signal received from the first antenna and to divide the receiving carrier signals, respectively.

Abstract: The present invention provides for transmitting a spread signal in a mobile communication system. The present invention includes spreading a signal using a plurality of spreading codes, wherein the plurality of spreading codes have a spreading factor, multiplexing the spread signal by code division multiplexing, transmitting the multiplexed signal via a plurality of neighboring frequency resources of one OFDM symbol of a first antenna set, and transmitting the same multiplexed signal via a plurality of neighboring frequency resources of one OFDM symbol of a second antenna set.

Abstract: A functional clock generator, including: an oscillator configured to generate an oscillator clock having an oscillator clock frequency; a control value generator configured to generate control values to ramp the oscillator clock frequency between a first frequency and a second, higher frequency; a Phase-Locked Loop (PLL) configured to generate a PLL clock having the second frequency; and a selector configured to switch between selecting the oscillator clock and the PLL clock as a functional clock when the oscillator clock frequency and the PLL clock frequency are substantially equal.

Abstract: A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.

Abstract: An indicator in a master AP from among a plurality of APs obtains communication quality of communication with an AP which is a communication partner. In the case where the obtained communication quality is less than a threshold, the indicator causes the plurality of APs including the master AP to perform cooperative operation to transmit data. In the case where the obtained communication quality is not less than the threshold, the indicator causes the plurality of APs including the master AP to stop the cooperative operation.

Abstract: A Multiple Input Multiple Output (MIMO) antenna system and operating method that provides spatial- and temporal multiplexing with polarization independent operating modes.

Abstract: A synchronization device, for use in a system of synchronization devices, to synchronize a received data stream with data streams received at other synchronization devices, and including a synchronization buffer receiving a data stream; an event detector detecting an event in the received data stream and to broadcast event information including an event detection time; and a delay computation element receiving, from each synchronization device, event information including the event detection time, to determine a delay time of a most delayed data stream, and to calculate a delay time to be applied to the received data stream to synchronize the received data stream with the most delayed data stream.