Abstract: The present technology relates to a receiving device, a receiving method, a transmitting device, and a transmitting method that enable a more appropriate introduction of a new broadcasting scheme. A receiving device is provided including a receiving unit that receives a transmission frame transmitted from a transmitting device, and a demodulation unit that performs demodulation processing on a data signal obtained from a transmission frame that has been received, on the basis of a transmission control signal obtained from the transmission frame that has been received, in which the transmission control signal includes time-division control information regarding time-division control, as control information according to introduction of a second scheme compatible with a first scheme, and the demodulation unit operates according to the time-division control information. The present technology can be applied to, for example, a transmission system compliant with a broadcasting scheme such as an ISDB-T scheme.

Abstract: In one example aspect, a method of transmitting signals is provided. The method comprises transmitting a first multi-carrier on-off keyed signal comprising a plurality of on periods and a plurality of off periods. Transmitting the first signal in each on period comprises, for each subcarrier of a plurality of subcarriers, transmitting, from each antenna of a plurality of antennas, a frequency domain symbol associated with that subcarrier phase shifted by a respective factor of a set of factors associated with that subcarrier, wherein the set of factors associated with that subcarrier is different from the set of factors associated with at least one other subcarrier of the plurality of subcarriers.

Abstract: Methods, systems, and devices for wireless communications are described. In one example, a receiving device (e.g., a UE) may transmit, to a transmitting device (e.g., a base station), a capability indicator indicating a capability of the receiving device to perform peak reconstruction using soft metrics (e.g., expected value, covariance) on symbol decisions. The receiving device may receive, from the transmitting device and based on the capability indicator, control signaling indicating a clipping level applied to generate a signal and a subset of peaks clipped from the signal. The receiving device may receive the signal generated in accordance with the control signaling from the transmitting device and may decode a reconstructed signal based on performing the peak reconstruction on the signal using the soft metrics on symbol decisions, the clipping level, and the subset of the peaks clipped from the signal.

Abstract: A system and method are provided for measuring absolute phase noise of a test signal from a DUT using a reference source for generating an RF reference signal, a mixer for mixing the RF reference signal and an input signal, an adjustable DC voltage source for outputting a DC voltage, and a PLL for maintaining a 90 degree quadrature between the RF reference and input signals. The method includes mixing RF calibration signals and the RF reference signal to provide calibration phase signals, at least one of the RF calibration signals having one-tone AM modulation; monitoring modulation tone frequency of the one-tone AM modulation; adjusting the DC voltage output by the adjustable DC voltage source to minimize a voltage level of the tone frequency being monitored; mixing the test signal and the RF reference signal to provide a measurement phase signal for measuring absolute phase noise of the test signal.

Abstract: A communication device communicates a radio frame including a preamble and a data field of a physical layer (PHY). The preamble includes an L-STF (Legacy Short Training Field), an L-LTF (Legacy Long Training Field), an L-SIG (Legacy Signal Field), an EHT-SIG-A (Extremely High Throughput Signal A Field), an EHT-STF, and an EHT-LTF, and the EHT-SIG-A includes a field indicating a standard that the radio frame complies with.

Abstract: The invention relates to a wireless communication device configured for use in a wireless communication system, wherein, based on one or more structural properties of a multi-panel antenna array describing how the antenna array is structured into multiple panels, a precoder is selected to be applied for a transmission from the multi-panel antenna array; and wherein an information indicative of the determined precoder is signaled to a transmit radio node; the invention further refers to a transmit radio node configured for transmitting via a multi-panel antenna array in a wireless communication system, wherein signaling indicating one or more structural properties of a multi-panel antenna array describing how the antenna array is structured into multiple panels is transmitted to the wireless communication device.

Abstract: A method for wireless communication in a reflective environment includes (a) receiving first wireless signals at a first antenna assembly at least partially via a first reflective environment, (b) generating a first electrical signal from a first antenna element of the first antenna assembly in response to the first wireless signals, the first antenna element having a first polarization, (c) generating a second electrical signal from a second antenna element of the first antenna assembly in response to the first wireless signals, the second antenna element having a second polarization different from the first polarization, (d) shifting phase of at least one of the first electrical signal and the second electrical signal, and (e) after shifting phase, combining at least the first electrical signal and the second electrical signal to generate a combined electrical signal.

Abstract: Systems and methods for selecting subcarriers to be used for sub-Physical Resource Block (PRB) transmission and, in some embodiments, for mapping Demodulation Reference Signals (DMRS) to resources on the selected subcarriers are disclosed. In some embodiments, a method of operation of a radio node for providing sub-PRB transmission comprises selecting two adjacent subcarriers from a set of three allocated subcarriers that are allocated for a sub-PRB transmission that uses Single Carrier Frequency Division Multiple Access (SC-FDMA) Pi/2 Binary Phase Shift Keying (BPSK) modulation using only two adjacent subcarriers out of the set of three allocated subcarriers with Discrete Fourier Transform (DFT) spread length of 2. In some embodiments, the selection is such that the selected adjacent subcarriers varies, e.g., from one cell to another. In doing so, interference is distributed.

Abstract: A beamformee executes a singular value decomposition operation on a channel coefficient matrix to generate a diagonal matrix and a unitary matrix. The beamformee extracts a submatrix from each of the diagonal matrix and the unitary matrix. Each of a number of rows and a number of columns of the submatrix extracted from the diagonal matrix is equal to a number of spatial streams associated with a beamformer. Further, the submatrix extracted from the unitary matrix has a number of rows and a number of columns equal to a number of beamformer antennas of the beamformer and the number of spatial streams, respectively. The beamformee generates a subspace matrix that is a product of the submatrix extracted from the diagonal matrix and a conjugate transpose of the submatrix extracted from the unitary matrix. Further, the beamformee generates a steering matrix based on the subspace matrix.

Abstract: A clock generation circuit has an injection-locked oscillator, a frequency doubler circuit, low pass filters and a calibration circuit. The injection-locked oscillator has an input coupled to a half-rate clock signal. The frequency doubler circuit has inputs coupled to outputs of the injection-locked oscillator. Each of the low pass filters has an input coupled to one of a plurality of outputs of the frequency doubler circuit. The calibration circuit includes comparison logic that receives outputs of the low pass filters. The calibration circuit has an output coupled to a control input of a source of a supply current in the injection-locked oscillator. In one example, the source of the supply current is a current digital to analog converter.

Abstract: Methods, systems, and devices for wireless communications are described. A codebook adaptation may be performed for a flexible user equipment (UEs) to determine a codebook for a physical configuration of the UE. For example, if the UE determines that the physical configuration does not correspond to a pre-loaded codebook in its memory, the UE may provide information about the physical configuration to a base station to determine a corresponding codebook. Additionally, the UE may request that the base station provide channel information to assist with the codebook determination. In some cases, this request may indicate for the base station to allocate a specific number of channel state information reference signal symbols that the UE can use for the codebook determination. Additionally or alternatively, the UE may generate the codebook internally and then signal to the base station a request for a beam refinement procedure with the generated codebook.

Abstract: A configuration for local coordination between the child node and parent node to enable SDM communication between the parent and child node, without input or interaction from the CU. The apparatus receives, from a CU, an indication including an allocation of resources. The apparatus determines a type of communication with a second node based on the allocation of resources. The apparatus communicates with the second node based on the determined type of communication and utilizing the allocated resources. The apparatus coordinates with a parent node to utilize the allocated resources in a SDM operation between the child node and the parent node.

Abstract: System-aware radio frequency (RF) front ends for wireless communication systems are provided. High complexity communication systems, such as Third Generation Partnership Project (3GPP) fifth generation (5G)-new radio (NR) systems, impose severe board area, volume, thermal and interference penalties on wireless devices. In the case of 5G-NR, this is due to the number of bands to be supported, the instantaneous bandwidth and spectral efficiency among other parameters. Other communications systems can involve high modulation of other parameters that similarly impose such penalties. Embodiments described herein provide a co-designed RF front end architecture that utilizes system knowledge (e.g., from baseband or other digital control circuitry, from antenna feedback, etc.) to dynamically adjust the parameters of various RF front-end components. System-aware RF front ends are thus able to improve and optimize performance criteria (e.g., to reduce the above penalties in complex communications systems).

Abstract: Introduced are a data transmission method, apparatus and device based on a modulation signal and a storage medium. The method includes steps as follows: calculating a first amplitude-modulated sine wave signal and a second amplitude-modulated sine wave signal with each preset frequency individually; based on the first amplitude-modulated sine wave signal and the second amplitude-modulated sine wave signal with the each preset frequency and according to a preset mapping rule, mapping a sequence of data bits to be sent into a signal sequence; and processing the signal sequence to generate a transmittable radio-frequency signal, and sending the transmittable radio-frequency signal to a receiving end.

Abstract: An antenna system and method includes or uses a set of M antenna structures and a cross bar beam former. The analog (or digital) cross bar beam former includes a set of M N to 1 (M(N×1)) interfaces, each of the M N to 1 interfaces having a first line coupled to a respective one of the set of the M antenna structures. The cross bar beam former also includes a set of N 1 to M (N(1×M)) interfaces, each of the N 1 to M interfaces having a set of M second lines, each of the M second lines being coupled to a respective one of the M N to 1 interfaces. Each of the N 1 to M interfaces includes a third line for a respective one of N independent beams.

Abstract: Embodiments disclosed herein relate to reducing or substantially eliminating an insertion loss caused by isolating a transmit circuit from a receive circuit of an electronic device. To do so, an isolation circuit may be disposed between the transmit circuit and the receive circuit. The isolation circuit may have a first signal path and a second signal path. A first portion of the signal may propagate along the first signal path and a second portion of the signal may propagate along the second signal path. A phase shifter may be disposed on the first signal path to shift a phase of the first portion to match a phase of the second portion. The phase-shifted first portion may be combined with the second portion to reduce or substantially eliminate an insertion loss caused by the isolation circuit.

Abstract: According to one embodiment, an RF frontend IC device includes a first RF transceiver to transmit and receive RF signals within a first frequency band and a second RF transceiver to transmit and receive RF signals within a second frequency band that is different than the first frequency band. The RF frontend IC device further includes a converter and a multi-band local oscillator (LO) generator to provide LO signals to the converter. The multi-band LO generator includes a phase-lock loop (PLL) circuit operating at a PLL operating frequency, wherein the PLL operating frequency is outside of the first frequency band and the second frequency band. The multi-band LO generator also includes multiple frequency multipliers coupled to the PLL circuit to upscale the PLL operating frequency and to generate an LO signal having a frequency within a predetermined proximity from the frequency band.

Abstract: A radio frequency module includes a radio frequency filter (10), and the radio frequency filter (10) includes a terminal (11), a terminal (12), an impedance element (Z) disposed in series on a path (13) connecting the terminal (11) and the terminal (12), and a parallel arm resonator (P) connected between a node (N) on the path (13) and the ground. The impedance element (Z) is a capacitor or an inductor, capacitance (C) between the ground and a wiring line (14) connecting the node (N) and the parallel arm resonator (P) is larger than capacitance between the ground and a wiring line (16) connecting the impedance element (Z) and a terminal out of the terminal (11) and the terminal (12) having a shorter wiring length to the impedance element (Z) (terminal (11), for example).

Abstract: Aspects relate to reconstructing a received non-linearly distorted (e.g., clipped) signal. A transmitting device may non-linearly distort a signal to be transmitted (e.g., by clipping peaks of the signal). A receiving device uses a signal reconstruction procedure to reconstruct the original signal. For example, the receiving device may estimate the non-linear distortion (e.g., due to clipped peaks) in the received signal by slicing the received signal, and applying a non-linear distortion to (e.g., clipping) the sliced signal using a threshold that corresponds to a threshold (e.g., a clipping threshold) used by the transmitting device. The receiving device may thereby generate a reconstructed signal based on this estimate of the non-linear distortion.

Abstract: A scheduling device for managing a packet queue of a communication gateway includes a receiving portion configured to receive data packets according to at least one communication protocol, a processor, and classification module configured to separate the received data packets into a first traffic queue and a second traffic queue separate from the first traffic queue. The first traffic queue includes a low latency service flow classified to have strict priority. The second traffic queue includes a primary service flow classified as having a classic priority. The classification module separates the received data packets so that those with a first indicator are sent to the first traffic queue and those without the first indicator are sent to the second traffic queue.