Abstract: The present disclosure relates to an equalizer training unit for deriving equalization parameters for compensating data-dependent distortion in received samples by use of a training sequence including a sequence p>1 times and cyclically comprising N sub-sequences of respective combinations of L time-domain symbols of a modulation scheme, wherein the N sub-sequences are cyclically arranged in a selected order and such that L?1 symbols of a respective sub-sequence overlap with symbols in the preceding and following sub-sequences. The present disclosure further relates to a training sequence generator unit for generative the training sequence and an equalizer employing the equalizer training unit.

Abstract: Methods and apparatus are provided. In an example aspect, a method of transmitting a multicarrier symbol comprising a plurality of subcarriers simultaneously from a plurality of antennas is provided. Each subcarrier is associated with a respective orthogonal matrix. The method comprises transmitting the symbol from the plurality of antennas such that, for each antenna, the symbol transmitted from each subcarrier is multiplied by an element of a respective row of the matrix associated with the subcarrier, wherein the row is associated with the antenna. The matrices are selected such that from each antenna, the symbol transmitted from at least one subcarrier is multiplied by a non-zero element, and the symbol transmitted from at least one other subcarrier is multiplied by a zero element.

Abstract: A terminal apparatus mounted on a movable body is provided to communicate with an external communication apparatus outside the movable body. The terminal apparatus includes an antenna, and a communicator device. The antenna includes a plurality of antenna elements to be arranged along a traveling direction of the movable body. The communicator device is configured to communicate with the external communication apparatus using a communicating antenna element that is at least one of the plurality of antenna elements. The communicating antenna element is selected from the plurality of antenna elements so as to belong to a specified region. The specified region is defined by propagation environment information of an electric wave propagation path of a signal transmitted to and received from the external communication apparatus.

Abstract: Disclosed are a communication technique for merging, with an IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety related services, and the like) on the basis of 5G communication technology and IoT related technology. A new radio access technology (NR) system, which is novel 5G communication, is designed such that various services can be freely multiplexed in time and frequency resources, thereby enabling channel state information based on an aperiodic CSI-RS or a synchronization signal to be transmitted and received.

Abstract: A method includes receiving, by a user equipment, a configuration for determining one or more antenna panel-wise cross-link interference measurements from a network entity configured to receive one or more downlink spatial directions. The method also includes calculating, by the user equipment, one or more interference estimates of UL interfering signals and related cross-link interference powers from the network entity. The method further includes transmitting, by the used equipment, one or more interference measurements based upon the configured flexible UL-to-DL cross-link specific resource configuration to the network entity.

Abstract: Provided are a preamble symbol receiving method and device, characterizing in that the method comprises the following steps: processing a received signal; judging whether the processed signal obtained contains the preamble symbol desired to be received; and if a judgement result is yes, determining the position of the preamble symbol and resolving signalling information carried by the preamble symbol, wherein the received preamble symbol comprises at least one time-domain symbol generated by a transmitting end using a free combination of any number of first three-segment structures and/or second three-segment structures according to a predefined generation rule, the first three-segment structure containing: a time-domain main body signal, a prefix generated based on the entirety or a portion of the time-domain main body signal, and a postfix generated based on the entirety or a portion of a partial time-domain main body signal, and the second three segment structure containing: the time domain main body signa

Abstract: PBCH design may affect timing indication in a wireless network and polar code interleaver design, among other things. Mechanisms may indicate half frame timing though de-modulation reference signal sequence initialization, de-modulation reference signal mapping order, or de-modulation reference signal resource element location.

Abstract: A base station for transmitting data to a terminal in a wireless communication system is provided. The base station includes a transceiver, a storage, and a controller including a first control unit and a second control unit, wherein the controller is configured to perform, by the first control unit, data packing on bit unit information including information related to the data and information related to a modulation type, transmit, by the first control unit, the bit unit information on which the data packing is performed and additional information to the second control unit, modulate, by the second control unit, the data based on the bit unit information on which the data packing is performed, and generate, by the second control unit, a signal to be transmitted to the terminal, based on the modulated data and the additional information.

Abstract: A clock calibration module, a high-speed receiver, and an associated calibration method are provided. The calibration method is applied to the high-speed receiver having the clock calibration module and a sampler. The sampler samples an equalized data signal with a sampler-input clock. The clock calibration module includes multiple clock generation circuits and a clock calibration circuit. Each of the clock generation circuits includes a phase interpolator, a duty cycle corrector, and a phase corrector. In a calibration mode, the phase interpolator interpolates a reference input clock and generates an interpolated clock accordingly. The duty cycle corrector generates a duty cycle corrected clock based on the interpolated clock. The phase corrector generates the sampler-input clock based on the duty cycle corrected clock. The phase interpolator is controlled by a phase interpolator calibration signal, and the phase corrector is controlled by a phase corrector calibration signal.

Abstract: A transmission device of the disclosure includes: a generator unit that generates, on the basis of a control signal, a transmission symbol signal that indicates a sequence of transmission symbols; an output control unit that generates an output control signal on the basis of the transmission symbol signal; and a driver unit that generates, on the basis of the output control signal, a first output signal, a second output signal, and a third output signal. The generator unit generates the transmission symbol signal on the basis of the control signal, to allow the first output signal, the second output signal, and the third output signal to exchange signal patterns with one another.

Abstract: Example implementations include a method, apparatus and computer-readable medium of wireless communication. A user equipment (UE) may identify a discrete Fourier transform (DFT) matrix including a number of rows and columns based on scheduled physical uplink control channel (PUCCH) resources including a number of symbols in a time domain and a number of sub-carriers in a frequency domain. The UE may select a codepoint from a sequence pool derived from the DFT matrix based on a payload value of uplink control information (UCI) to be transmitted on the PUCCH resources. The UE may transmit the selected codepoint on the scheduled PUCCH resources.

Abstract: A wireless device receives configuration parameters of a cell that comprise: first parameters indicating: configuration of SRSs of the cell; whether a first accumulated power control adjustment for the SRSs is enabled; and second parameters. The second parameters indicate: configuration of an uplink data channel of the cell; and whether a second accumulated power control adjustment for the uplink data channel is enabled. A first transmission power is determined for the SRSs based on the first accumulated power control adjustment and a first power control command. The SRSs are transmitted, via the cell, with the first transmission power. A second transmission power is determined for the uplink data channel of the cell based on the second accumulated power control adjustment and a second power control command. One or more transport blocks are transmitted, via the uplink data channel of the cell, with the second transmission power.

Abstract: A user station for a bus system and a method for transmitting a message at different bit rates in a bus system. The user station includes a communication control unit for creating a message for a further user station of the bus system. The communication control unit provides, in the message, a first phase, which is to be transmitted at a first bit rate, and to provide a second phase, which is to be transmitted at a second bit rate, which is faster than the first bit rate. The communication control unit is designed to provide in the message a first predetermined bit pattern for a bit rate switching between the first and second bit rate and to provide a second predetermined bit pattern for a bit rate switching between the second and first bit rate. The second predetermined pattern differs from all other bit patterns in a valid message.

Abstract: A user equipment (UE) that performs control signal transmission according to a single-segment subframe format is described. In an aspect, the UE selects a single-segment subframe format as an uplink transmission format for a subframe instead of a multi-segment subframe format. This selection may be based on an indication received by a network node that the single-segment subframe format is to be used for transmission of the one or more control signals. In addition, the UE transmits the one or more control signals on an uplink control channel using the single-segment subframe format.

Abstract: A user terminal according to one aspect of the present disclosure includes: a transmitting section that transmits an uplink signal; and a control section that uses, for the uplink signal, a sequence corresponding to information including whether change of a beam is necessary. According to one aspect of the present disclosure, overhead of a beam report can be reduced appropriately.

Abstract: A method for generating a Trellis-Coded Modulation (TCM) scheme for transmitting symbols over a Partial-Response (PR) channel, the method including holding a base TCM scheme including a plurality of states and transitions among the states. Sequences of symbols are produced, and second sequences of symbols are calculated, each second sequence emulating a response of the PR channel to a respective sequence of symbols traversing the PR channel. The TCM scheme is initialized by assigning the sequences to the transitions of the base TCM scheme. One or more transitions are removed so that second sequences corresponding to transitions that were not removed are separated by at least a first distance. One or more additional transitions are further removed from the TCM scheme, so that second sequences corresponding to parallel transitions from a current state to a next state are separated by at least a second distance larger than the first distance.

Abstract: One or more systems, devices and/or methods of use provided herein relate to a device that can support a signal generation. A current-mode end-to-end signal path can include a digital to analog converter (DAC) operating in current-mode and an upconverting mixer, operating in current-mode and operatively coupled to the DAC. Analog inputs and outputs of the DAC and upconverting mixer can be represented as currents, and the DAC can generate a baseband signal. The DAC and upconverting mixer each can comprise switching transistors of the same type, such as p-type metal-oxide semiconductor (PMOS) switching transistors. In one or more embodiments, a current source and a diode-connected transistor can be arranged in parallel in the current-mode signal path, and the current source passes a static current, while the diode-connected transistor passes both a static current and a dynamic current.

Abstract: Utilizing the topological character of patterns in 3D structures is beneficial for information storage, magnetic memory and logic systems. One embodiment describes the use of topological knots, exemplified by a Möbius strip, in which a spin traversing along the band for a complete cycle will recover its original position, while having rotated away from its original orientation. The spins can respond to an external magnetic field, but cannot achieve a ferromagnetic state, in which all magnetic moments are pointing in the same direction, due to the topological knot. 3D assemblies of such nano-Möbius strips may form prototype secure magnetic information storage devices that are secure and with extremely low levels of energy dissipation.

Abstract: A transmission method includes generating a first precoded signal and a second precoded signal by performing a precoding process on a first baseband signal and a second baseband signal, outputting a third signal by inserting a pilot signal into the first precoded signal, outputting a fourth signal by applying a first phase change to the second precoded signal, outputting a fifth signal by inserting a pilot signal into the fourth signal, and outputting a sixth signal by applying a second phase change to the fifth signal.

Abstract: A method and network node for detection of passive intermodulation (PIM) are disclosed. According to one aspect, a method includes determining values of a covariance matrix based at least in part on uplink signals received by the network node radio. The method also includes determining a plurality of uplink (UL) channel 5 eigenvalues based at least in part on an eigen-component acquisition technique. The method further includes determining a presence or absence of PIM based at least in part on a plurality of the UL channel eigenvalues.

Abstract: A broadcast signal reception method, according to one embodiment of the present invention, may include receiving the broadcast signal including broadcast data and physical layer signaling information, where the physical layer signaling information includes frequency interleaver information for indicating whether a frequency interleaver is applied to the broadcast data, performing frequency deinterleaving on the broadcast data selectively based on the frequency interleaver information, convolutionally deinterleaving the broadcast data, block deinterleaving the convolutionally deinterleaved broadcast data, and cell deinterleaving the block deinterleaved broadcast data using a memory, where the cell deinterleaving includes random writing the block deinterleaved broadcast data into the memory and linear reading the block deinterleaved broadcast data from the memory, and the random writing is performed based on a permutation sequence and the permutation sequence varies for every FEC block.

Abstract: Embodiments of a method and an apparatus for wireless communications are disclosed. In an embodiment, a method for wireless communications involves assigning subcarriers of a first access point (AP) and a second AP to a subcarrier set of a virtual AP, generating, by the virtual AP, a packet that includes a signal for a station (STA) and that is transmitted using the subcarrier set, where generating the packet includes: encoding a preamble portion of the packet on the assigned subcarriers included in the subcarrier set, nulling the preamble portion of the packet for unassigned subcarriers of the first AP and the second AP, encoding a subsequent portion of the packet according to a Distributed Multiple-Input Multiple-Output (DMIMO) transmission, and transmitting the packet to the STA.

Abstract: Methods, systems, and devices for wireless communications are described. A network node may identify a set of packets for broadcasting to a set of user equipment (UEs) and may transmit a set of encoded packets based on the set of packets. The network node may receive feedback from one or more of the UEs, and the feedback may indicate a number of successfully received packets of the set of encoded packets at each of the one or more UEs. Based on the feedback, the network node may transmit a second set of encoded packets to the set of UEs if the number of successfully received packets for at least one UE fails to satisfy a decodability threshold. The transmitter may continue to transmit sets of encoded packets until the feedback indicates that each UE has received a number of packets that satisfies the decodability threshold.

Abstract: A PAM-N receiver capable of adaptively adjusting threshold voltages determining a level of a received signal and a method of adaptively adjusting threshold voltages thereof are disclosed. According to the method of the present invention, the result of comparison between reference data levels and the level of data in the received signal are used to adjust the reference data levels, and the threshold voltages of a PAM-N receiver are adaptively calculated from the adjusted reference data levels, thereby reflecting transmission line conditions and Inter-Symbol Interference.

Abstract: The present application provides a wireless communication method, a network device, and a terminal device. The network device may configure, in a time slot, a time-domain position of a first resource transmitting a physical downlink control channel (PDCCH), so that the terminal device may accurately receive the PDCCH over the first resource, thereby meeting different PDCCH transmission delay requirements. The method comprises: sending first configuration information to a terminal device, the first configuration information indicating a time domain position of a first resource in each of at least one time slot, wherein the first resource is used for transmitting a PDCCH; and sending the PDCCH to the terminal device over the first resource.

Abstract: An antenna front-end module, a method, and an information handling system are provided. An antenna front-end module comprises a circuit board. The circuit board comprises an antenna tuning circuit adapted to tune a feed impedance of an antenna, the antenna electrically connected to the circuit board, and an antenna proximity sensing circuit adapted to obtain proximity sensing information indicative of proximity of a part of a human body to the antenna. A method comprises obtaining, at an antenna proximity sensing circuit on a circuit board, proximity sensing information indicative of proximity of a part of a human body to an antenna, the antenna electrically connected to the circuit board, and, in response to the obtaining, providing, to an antenna tuning circuit on the circuit board, a tuning parameter value to adapt antenna tuning for the proximity of the part of the human body to the antenna.

Abstract: A channel encoding method and apparatus. The method includes: obtaining A to-be-encoded information bits; mapping the A to-be-encoded information bits and L CRC bits to a first bit sequence based on an interleaving sequence, where the L CRC bits are obtained based on the A to-be-encoded information bits and a CRC polynomial, the interleaving sequence is obtained from a prestored interleaving sequence table or is obtained based on a maximum-length interleaving sequence, A+L is less than or equal to Kmax, and Kmax is a length of the maximum-length interleaving sequence; and encoding the first bit sequence. In this way, not only an encoding delay can be reduced, but also decoding has an early stop capability, so that decoding can end in advance, thereby reducing a decoding delay.

Abstract: Within many applications impulse radio based ultra-wideband (IR-UWB) transmission offers significant benefits for very short range high data rate communications when compared with existing standards and protocols. In many of these applications the main design goals are very low power consumption and very low complexity design for easy integration and cost reduction. Digitally programmable IR-UWB transmitters using an on-off keying modulation scheme on a 0.13 microns CMOS process operating on 1.2V supply and yielding power consumption as low as 0.9 mW at a 10 Mbps data rate with dynamic power control are enabled. The IR-UWB transmitters support new frequency hopping techniques providing more efficient spectrum usage and dynamic allocation of the spectrum when transmitting in highly congested frequency bands. Biphasic scrambling is also introduced for spectral line reduction.

Abstract: One example includes a device that is comprised of a pre-power amplifier, a power amplifier, a signal path, and a dynamic bias circuit. The pre-power amplifier amplifies an input signal and outputs a first amplified signal. The power amplifier receives the first amplified signal and amplifies the first amplified signal based on a dynamic bias signal to produce a second amplified signal at an output thereof. The signal path is coupled between an output of the pre-power amplifier and an input of the power amplifier. The dynamic bias circuit monitors the first amplified signal, generates the dynamic bias signal, and outputs the dynamic bias into the signal path.

Abstract: A method may include receiving a communication from a user device, determining whether to forward the communication to a first computer system or a second computer system and forwarding the communication to the first computer system based on the determining. The method may also include generating, by the first computer system, a first response to the communication, determining whether an error occurred when processing the communication at the first computer system and forwarding the communication to the second computer system, in response to determining that an error occurred. The method may further include generating, by the second computer system, a second response to the communication and comparing the first response from the first computer system to the second response from the second computer system.

Abstract: A wireless charging transmit end includes a dual-polarized antenna which includes at least one dual-polarized element and a signal processing apparatus. Each dual-polarized element includes a first linearly polarized element and a second linearly polarized element that are mutually orthogonal and respectively receive a first wireless signal and a second wireless signal from the receive end. The signal processing apparatus obtains a first energy signal and a second energy signal based on a waveform relationship between the first wireless signal and the second wireless signal. The first energy signal is sent to the receive end by the first linearly polarized element, and the second energy signal is sent to the receive end by the second linearly polarized element. The first energy signal and the second energy signal are combined into an energy signal matching the receive end.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station over a set of component carriers according to a carrier aggregation configuration. In some cases, the UE may receive an indication of one or more groups of units, where each group may include one or more component carriers and/or one or more time intervals of each component carrier. The UE may receive downlink control information (DCI) including one or more fields that are common to a group of units that may schedule a set of data transmissions over the one or more groups of units such that the single DCI may schedule multiple component carriers (e.g., two or more) over one or more time intervals. The UE may transmit or receive the set of data transmissions (e.g., uplink or downlink data transmissions) over the scheduled units based on receiving the DCI.

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive control signaling indicating a preamble configuration. The UE may receive a preamble in a time domain. The preamble may include a set of modulated bits during a first portion of an initial symbol duration of a slot. The set of modulated bits may include one or more of a first subset of network temporary identifier bits or a second subset of modulation and coding scheme (MCS) bits. The UE may process the preamble during a second portion of the initial symbol duration of the slot based on the preamble configuration.

Abstract: A reference signaling scheme is provided that is based on the use of a Zadoff Chu sequence with cyclic repetition, optionally code division multiplexing precoding, together with frequency domain spectral shaping (FDSS). A specific pulse shape design for the FDSS part of the reference signal scheme in some embodiments involves the use of a raised cosine pulse raised to the power of ?. The new solution for generating reference signals has a Low peak average power ratio that matches the PAPR of SC-OQAM, good channel estimation performance, and the ability to implement CDM in the frequency domain to increase multiplexing gain.

Abstract: Systems and methods are disclosed herein that relate to transmitting and receiving a transmission when there is a collision between the transmission and reserved resource elements. In some embodiments, a radio access node for a cellular communications network is disclosed, wherein the radio access node comprises a transceiver, a processor, and memory storing instructions executable by the processor whereby the radio access node is operable to transmit, via the transceiver, a downlink transmission to a wireless device using one or more Physical Resource Blocks (PRBs) that comprise reserved Resource Elements (REs) by puncturing the downlink transmission at positions of the reserved REs. In some embodiments, the downlink transmission is an Enhanced Physical Downlink Control Channel (EPDCCH) transmission or a Physical Downlink Shared Channel (PDSCH) transmission. Further, in some embodiments, the reserved REs are REs utilized for one or more CSI-RSs.

Abstract: A terminal is disclosed including a receiver that receives a system information block before establishing a radio resource control connection; and a processor that determines one physical uplink control channel (PUCCH) resource set from a plurality of PUCCH resource sets based on an index within the system information block, and determines one PUCCH resource from a plurality of PUCCH resources within the PUCCH resource set based on a control channel element (CCE) index and a PUCCH resource indicator field within a downlink control information (DCI), wherein all of the plurality of PUCCH resources includes a same number of symbols and a same start symbol index, and at least two PUCCH resources out of the plurality of PUCCH resources include different initial cyclic shift indexes. In other aspects, a radio communication method and a base station are also disclosed.

Abstract: A parity interleaving apparatus and method for fixed length signaling information are disclosed. A parity interleaving apparatus according to an embodiment of the present invention includes a processor configured to generate a parity bit string for parity puncturing by segmenting parity bits of an LDPC codeword whose length is 16200 and whose code rate is 3/15, into a plurality of groups, and group-wise interleaving the groups using an order of group-wise interleaving; and memory configured to provide the parity bit string for parity puncturing to a parity puncturing unit.

Abstract: A transmitter includes a data stream encoder layer having an output and a pattern generator having a bit pattern output. The transmitter further includes a first multiplexer having first and second inputs and a first multiplexer output. The first input is coupled to the output of the data stream encoder layer, and the second input is coupled to the bit pattern output of the pattern generator. While at least a portion of the data stream encoder layer is powered down, the pattern generator is configured to provide bit patterns on its bit pattern output, a control signal to the first multiplexer is configured to select the second input of the first multiplexer, and the first multiplexer is configured to output the bit patterns on the output of the first multiplexer.

Abstract: A transmission method comprises: generating a transmission signal including OFDM symbols, wherein the last OFDM symbol of the OFDM symbols can be partitioned into four segments, and wherein the generating includes: computing an initial padding factor value associated with one of the four segments and computing an initial number of OFDM symbols; determining a user with a longest packet duration among plural users; determining a common padding factor value being the initial padding factor value and a common number of OFDM symbols being the initial number of OFDM symbols of the determined user with the longest packet duration; adding pre-FEC padding bits toward one of four possible boundaries of the last OFDM symbol, the one of four possible boundaries being represented by the determined common padding factor value; and adding post-FEC padding bits in remaining segment(s) of the last OFDM symbol; and transmitting the generated transmission signal.

Abstract: A method and an apparatus for transmitting an EHT PPDU to a WLAN system are proposed. Specifically, a transmitter generates and transmits an EHT PPDU to a receiver through a 320 MHz band from which an 80 MHz band is punctured. The EHT PPDU includes a legacy preamble and an EHT field. The legacy preamble includes an L-STF and an L-LTF. The legacy preamble is generated by applying a first phase rotation value. The first phase rotation value is obtained on the basis of a second phase rotation value and a third phase rotation value. The second phase rotation value is a phase rotation value that repeats a phase rotation value defined for the 80 MHz band in an 802.11ax system. The third phase rotation value is a phase rotation value defined in unit of the 80 MHz band in the 320 MHz band on the basis of an optimal PAPR of the L-STF and L-LTF. The first phase rotation value is [1 1 ?1 ?1 ?j ?j j j 1 1 ?1 ?1 ?j ?j j j].

Abstract: The present disclosure relates to an electronic apparatus, a wireless communication method and a computer-readable medium. The electronic apparatus for wireless communication according to one embodiment comprises a processing circuit. The processing circuit is configured to perform control to send or receive configuration information. The configuration information is related to configuration of a reference signal used in a discovery process of an integrated access backhaul (IAB) link node.

Abstract: A combined I/Q DAC is provided with a plurality of sources corresponding to a plurality of selectors in which the corresponding source drives the corresponding selector with a source signal to produce a corresponding pair of in-phase and quadrature-phase analog input signals to a summation network. Each selector routes its source signal responsive to a digital value of a corresponding in-phase and quadrature-phase bit pair.

Abstract: A monitoring system for a wind turbine blade, wherein the wind turbine blade includes an electrically conducting or semi-conducting structural component and a lightning protection system having a down conductor electrically connected to an lightning receptor, wherein the down conductor is electrically connected to the structural component by an equipotential connector, such that, a network of electrical impedances including the structural component, the equipotential connector and the down conductor is formed, whereby the hybrid monitoring system includes, a sensing device for the network, including a transmitter for emitting an electrical pulse into the network via a first terminal and a receiver for receiving a reception pattern of the electrical pulse from the network via a second terminal, and an evaluation device for evaluating the reception pattern to determine a first health information regarding the lightning protection system, and a second health information regarding the structural component, is pro

Abstract: An apparatus of a user equipment (UE) comprises one or more baseband processors to process a message received from a Fifth Generation (5G) NodeB (gNB) to perform one or more measurements in one or more target frequency layers, and for each of the one or more target frequency layers, to divide one or more other frequency layers into one of three categories comprising fully overlapped frequency layers, partially overlapped frequency layers, and non-overlapped frequency layers. The apparatus includes a memory to store the message.

Abstract: A message transmitting/receiving apparatus and method and a communication system. The message transmitting method includes: determining a message type of a message to be transmitted to one or more user equipments; scrambling control information of the message by using an identity to which the message type corresponds; wherein, different identities correspond to different message types; and transmitting data information of the message and the scrambled control information to the one or more user equipment.

Abstract: An apparatus has a Radio Frequency (RF) signal generator to produce RF signals phase shifted relative to one another in accordance with RF frequency waveform parameters. Amplifier chains process the RF signals to produce channels of amplified RF signals. Each amplifier chain has amplifiers and at least one amplifier has a tunable gate voltage synchronized with the RF signals.

Abstract: A system includes an ultra-wideband (UWB) array having a transmitter that transmits electromagnetic waves as UWB pulses toward a region-of-interest (ROI), and having a receiver that receives reflected electromagnetic waves from objects in the ROI and generates object data, and a pattern recognition device having a processor configured to provide operations. The processor is configured to provide instructions that obtain scanning data from reflected electromagnetic waves from the ROI until an event is triggered, when the event is triggered, access a heuristic created from calibration data that was previously obtained using the ROI and using the UWB array, analyze the scanning data with the heuristic utilizing a pattern recognition function derived from the calibration data, to determine whether an object-of-interest (OOI) pattern is recognized within the scanning data, and if an OOI pattern is recognized, generate an alert.

Abstract: A precoded signal including reference symbols can be received. Channels for the reference symbols can be estimated. A channel for the data symbols can be estimated by taking an inner product of a conjugate of a data symbol precoder and the reference symbol channel estimates. Received data symbols can be demodulated based on the estimated channel.

Abstract: Methods, systems, and devices for wireless communications are described that may enable a user equipment (UE) or base station (e.g., a next-generation NodeB (gNB)) to identify that a waveform to be generated for a scheduled transmission is formed by one or more reference signal symbols and one or more data symbols. The waveform may be contained between a beginning boundary and an ending boundary with a duration equal to a total length of the one or more reference signal symbols and the one or more data symbols. The UE, base station, or both may generate the waveform by inserting a guard internal in the one or more reference signal symbols and the one or more data symbols to enable a receiver to perform a fast Fourier transform (FFT) for each of the one or more reference signal symbols and the one or more data symbols.

Abstract: A wireless device transmits a frame by determining a plurality of Resource Units (RUs) of the frame, providing pilots in a first RU of the frame at a first set of positions, providing pilots in a second RU of the frame at a second set of positions, and transmitting the frame. The first set of positions is different from the second set of positions. A wireless device receives a frame including an RU including pilots and processes the pilots. When an RU for the data symbol includes an odd-numbered lowest subcarrier, the pilots are included at a first set of positions in the resource unit. When the RU includes an even-numbered lowest subcarrier, the pilots are included at a second set of positions in the resource unit. The second set of positions is different from the first set of positions.