Abstract: A digital to analog converter (DAC) includes a first amplifier configured to receive a first bit of a data block as an input and output a first signal based on a value of the first bit of the data block, a first filter circuit configured to filter the first signal, an output configured to output an analog signal based on a combination of the filtered first signal and a second signal that represents a value of a second bit of the data block.

Abstract: This application provides example data transmission methods and apparatuses, so that a PAPR of time-domain sending data can be reduced. One example method includes a transmit end performing modulation data processing on first modulation data whose length is M1, to obtain second modulation data whose length is M2, where M1<M2, M1 and M2 are positive integers, and each modulation data in the second modulation data is an element in the first modulation data. The transmit end then performs sending preprocessing, such as phase shift, Fourier transform, inverse Fourier transform, or time/frequency domain filtering on the second modulation data to obtain time-domain sending data of one symbol. The transmit end then sends the time-domain sending data on the one symbol.

Abstract: LMS adaption systems and methods disclosed herein adaptively switch between modes of operation that selectively avoid using the imaginary part of an error signal, in effect, allowing for an LMS adaption that switches between utilizing only the real part of the error signal and utilizing the full complex error signal. Various embodiments take advantage of this added flexibility by implementing a dynamic power saving scheme that, for example, during times when high tracking performance (e.g., high accuracy or high SNR) is not needed, saves power by not energizing a number of multiplier and adder circuits that are expensive in terms of power consumption, thereby, trading power savings for a possible temporary reduction in tracking performance. In embodiments, power savings are accomplished by adaptive power-gating systems and methods that in parts of an analog LMS adaption circuit turn on and off current sources in analog multiplier circuits on demand.

Abstract: A control unit (control device) (12) is configured to be connectable to radio units (11-1 to 11-N), respectively, and each path unit (13) includes path units (13-1 to 13-N) having a first input path (L1) and a second input path (L2). The first input path (L1) is a path on which a corresponding DPD unit (14) is provided and through which a transmission baseband signal compensated for the non-linear distortion is input to a corresponding radio unit (11). The second input path (L2) is a path through which a transmission calibration signal for calibrating a path and amplitude deviation between the radio units (11) is input to the corresponding radio unit (11) without passing through the DPD unit (14).

Abstract: A communication system that includes a first communication device at a first location. The first communication device obtains a plurality of radio frequency (RF) signals corresponding to different communication protocols from a plurality of communication systems. A plurality of repeater devices is arranged at a plurality of different locations and are communicatively coupled in a cascaded structure over wired mediums. At least one repeater device of the plurality of repeater devices is arranged at a second location and is configured to obtain a RF signal of a specified frequency through a wired medium from the first communication device. The at least one repeater device further distributes, from the obtained RF signal of the specified frequency, the plurality of radio frequency (RF) signals corresponding to different communication protocols wirelessly to a plurality of end-user devices or one or more communication systems of the plurality of communication systems.

Abstract: An emitting device includes: an oscillator configured for generating at least one carrier wave; an emitter including: at least one input connected to the oscillator; an activation input configured for receiving a signal representative of data to be transmitted; at least one output configured to generate a carrier wave modulated by the signal representative of the data to be transmitted; a communication link connected to the output of the emitter; a power line connected to the communication link at a connection point; a capacitive coupling component connected between the output of the emitter and the connection point. A receiving device and a system for transmission are also described.

Abstract: The present document discloses network nodes and apparatuses deployable in network systems. The network node may be coupleable via a transmission line to the apparatus. In particular, the network node may comprise means for receiving supply power from the apparatus via the transmission line; performing a line measurement on the transmission line; and signaling to the apparatus to disconnect from the transmission line, wherein the means may be further configured to perform the line measurement on the transmission line during a period of time when the apparatus is disconnected from the transmission line. The apparatus may comprise means for providing supply power to the network node; monitoring at least one electrical parameter of the transmission line; and disconnecting the apparatus from the transmission line if a predetermined line condition or a power violation is detected such that the network node can perform a measurement on the transmission line.

Abstract: Aspects of the disclosure provide for a method. In at least some examples, the method includes receiving, at a circuit, data via a differential input signal. The method further includes detecting a falling edge in the data received via the differential input signal. The method further includes holding an output of the circuit at a final logical value of the data. The method further includes disabling a transmitter of the circuit while holding the output of the circuit at the final logical value of the data. The method further includes releasing the output of the circuit from the final logical value of the data.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a resource allocation indicating a set of transmission tones comprising a set of data tones and a set of peak reduction tones (PRTs), wherein the resource allocation indicates locations for the set of data tones and locations for the set of PRTs within a particular bandwidth, wherein the locations for the set of PRTs are arranged relative to the locations for the set of data tones according to a PRT sequence, and wherein the PRT sequence comprises a plurality of contiguous PRTs arranged relative to a plurality of contiguous data tones or a pseudo-random pattern generated using a pseudo-random number generator; and transmit a data transmission using a waveform based at least in part on the resource allocation. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described in which a base station may develop a number of different predictive models for each of a number of different functions. The different functions may be used to determine various beamforming parameters for beamformed communications between a user equipment (UE) and a base station. The base station may provide the models to a UE, and the UE may then use such models to determine values for one or more beamforming parameters. A same function (e.g., a beam prediction function to identify a transmit/receive beam for communications) may have multiple different models, which may be provided to the UE by the base station, which may be used based on particular channel conditions or locations of a UE. The UE or base station may select which model of the multiple predictive models is to be used for communications.

Abstract: An example disclosed method includes (i) modulating a first type of uplink information using beam direction modulation with an uplink beam direction pattern applied over a set of allocated uplink radio resource, (ii) modulating a second type of uplink information using an in-phase quadrature (IQ)-based modulation scheme, wherein modulation symbols of the IQ-based modulation scheme are transmitted on a plurality of uplink beams used to modulate the first type of uplink information across same set of allocated uplink radio resources as the set of allocated uplink radio resources used for the beam direction modulation, (iii) and transmitting the modulated first type of uplink information and the modulated second type of uplink information over an air interface.

Abstract: According to one or more embodiments of the disclosure, an electronic device may include a power amplifier, a voltage generator, an antenna, and a communication processor. The CP determines whether an output waveform of the transmission signal which is output through the antenna is a first waveform or a second waveform. If the output waveform is the first waveform, the voltage generator generates a first output voltage for amplifying the first waveform by applying a first direct current (DC) power source of one or more first voltages. If the output waveform is the second waveform, the voltage generator generates a second output voltage for amplifying the second waveform by applying a second DC power source of a second voltage shifted by a designated level with respect to the first voltage, based on a peak power of the first waveform and a peak power of the second waveform.

Abstract: Examples described herein include devices and methods that may facilitate interoperability between backscatter devices and wireless communication devices. For example, backscatter devices and methods for backscattering are described that provide a transmitted backscattered signal formatted in accordance with a wireless communication protocol (e.g. Bluetooth Low Energy, WiFi, IEEE 802.11, or IEEE 802.15.4). Such communication may reduce or eliminate any modifications required to wireless communication devices necessary to receive and decode backscattered signals.

Abstract: Provided is a power line communication device for use in an electric power generation system. The power line communication device is provided with: a positive input terminal connected to a positive pole of an electric generator; a negative input terminal connected to a negative pole of the electric generator; a positive output terminal connected to the downstream side of a power line for transmitting electric power generated by the electric generator; a negative output terminal connected to the upstream side of the power line; a current pulse generator which is connected between the negative input terminal and the positive output terminal and generates a current pulse in the power line; and a controllable unidirectional device which is connected between the positive input terminal and the positive output terminal and is capable of performing impedance control.

Abstract: Wireless communication techniques that utilize a general purpose (GP) reference signal for non-coherent millimeter-wave communication are discussed. The GP reference signal may have a special structure allowing it to be flexibly used by a mobile device for multiple purposes. A base station may determine a repetition factor for a repetitive intra-symbol GP reference signal mapping based on an event that triggered transmission of the GP reference signal. The base station may also map the GP reference signal to resource elements of a symbol based, at least in part, on the determined repetition factor of the repetitive intra-symbol GP reference signal mapping. The base station may also transmit the mapped GP reference signal. A mobile device may receive the GP reference signal and modify at least one parameter of a plurality of parameters based, at least in part, on processing of the GP reference signal.

Abstract: The present disclosure provides a data transmission method, which includes that: M conjugate symbol pairs are generated, where M is more than or equal to 1; and the symbol pairs in the conjugate relationship are transmitted. The present disclosure also provides a data transmission device, a storage medium and an electronic device.

Abstract: This application provides a power line communication method. Wherein, a first node determines a channel status of a channel between a second node and the first node in an alternating current cycle. Then, the first node may divide the alternating current cycle into time windows based on the channel status, and determine modulation coding parameters used for data transmission between the second node and the first node in the time window obtained through division. Further, the first node may send information about the time window obtained through division and the modulation coding parameters used in the time window obtained through division to the second node.

Abstract: A transceiver having a shared filter for both transmit and receive modes is disclosed. A transceiver includes a transmitter having an output coupled to a signal node, wherein the transmitter is configured to transmit signals onto the signal node during transceiver operation in a transmit mode. The transceiver also includes a receiver having an input coupled to the signal node, and configured to receive signals from the signal node during operation in the receive mode. The transceiver further includes a first filter coupled to the signal node, wherein the filter is shared by the transmitter and the receiver. The filter is coupled between the transceiver and a first terminal of a transmission line.

Abstract: Disclosed are a carrier channel control method and apparatus, a storage medium and a processor. The carrier channel control method includes: applying an air conditioner control signal to a power line carrier to obtain a power line communication (PLC) signal, wherein, the power line carrier comprises a plurality of communication subcarriers; determining PLC noise values respectively corresponding to each of the communication subcarriers used to transmit the PLC signal; generating state data of carrier channels respectively corresponding to the communication subcarriers based on each of the PLC noise values which corresponds to one of the communication subcarriers, wherein each of the carrier channels respectively corresponds one of the communication subcarriers; and controlling each of the carrier channels respectively according to the state data of each of the carrier channels.

Abstract: There is provided mechanisms for reshaping individual beams of a beam pattern. A method is performed by a control node. The method comprises determining the beam pattern by distributing available transmission energy in individual beams according to a weighted combination of the individual beams. Different weights are applied for at least two of the individual beams. The weighted combination of individual beams is based on radio propagation channel properties. The method comprises truncating transmission energy of the individual beam with highest transmission energy in the beam pattern to not be over a threshold. The method comprises redistributing the truncated transmission energy among the remaining individual beams in the beam pattern, thereby reshaping the individual beams of the beam pattern.