Abstract: As solution for predistorting a signal is presented. The solution comprises receiving (600) as an input a signal comprising at least two signal components on a different band, sampling (602) the input signal comprising linear terms, composite non-linear terms causing intermodulation outside Nyquist band of the input signal and further non-linear terms causing intermodulation inside the Nyquist band, the further non-linear terms comprising multi-band terms. Oversampling (604) by a given factor is applied to the signal in a first predistortion circuit for processing the linear terms and composite non-linear terms causing intermodulation outside Nyquist band; processing (606) the input signal without oversampling in a second predistortion circuit in parallel with the first predistortion circuit for the further non-linear terms. The rates of the output signals of the predistortion circuits are matched (608), combined and filtered (610).

Abstract: A communication device for detecting an object includes a power module, an antenna array, a first sensor pad, a second sensor pad, and a control unit. The antenna array is excited by the power module, and is configured to provide a first beam group and a second beam group. The first sensor pad is disposed adjacent to the first side of the antenna array. A first capacitance is formed between the first sensor pad and the object. The second sensor pad is disposed adjacent to the second side of the antenna array. A second capacitance is formed between the second sensor pad and the object. The control unit controls the power module according to the first capacitance and the second capacitance, so as to selectively apply at least one power backoff operation to the first beam group and/or the second beam group.

Abstract: A transmitter includes a transmission controller which outputs original data through an original data lane, an encoder which encodes the original data into encoded data and outputs the encoded data through an encoded data lane, and a transmission driver which outputs the encoded data at a speed of M (M is a real number greater than 0) gigabits per second through a transmission and reception interface. The transmission driver provides a first clock signal corresponding to an output speed to the encoder, the encoder provides a second clock signal having a second frequency less than a first frequency of the first clock signal to the transmission controller, the transmission controller outputs the original data based on the second clock signal, and the encoder outputs the encoded data based on the first clock signal.

Abstract: Ultra-wide band frequencies used for extended reality (XR) services operate as unlicensed spectrum, which can result in unexpected interference. Although some link adaptation procedures can be used, uncertain link quality can result in sub-optimal utilization of spectrum resources, which may result in poor performance of an XR service. Some aspects described herein enable use of a fixed quantity of re-transmissions of data for an XR frame, with each of the re-transmissions having different XR frame qualities or different quantities of parity bits. The XR device may transmit a feedback message indicating whether the first transmission was successful and may receive a second transmission with additional data for the XR frame. In this way, the XR device can ensure a more efficient use of network resources.

Abstract: A transmission/reception method and device for isolated communication is proposed. The transmission/reception method includes performing transmission, wherein bit streams are extracted from data and two or more predetermined number of bits are modulated into one DC balanced symbol so as to generate a signal in which a plurality of symbols are listed, thereby transmitting the signal through an isolated communication circuit, and performing reception, wherein the signal is received through the isolated communication circuit and the plurality of symbols included in the signal are demodulated into the two or more predetermined number of bits so as to generate the bit streams and organize the bit streams into the data. The transmission/reception method and device may reduce power consumption at the same communication speed because a plurality of bits is represented by the one DC balanced symbol.

Abstract: The present technology relates to a communication apparatus and a communication method that permit realization of more reliable communication. Provided is a communication apparatus that includes a control section that performs control such that plural aggregated subframes are sent in a predetermined sequence for each frame included in each of spatially multiplexed streams when a frame is sent to another communication apparatus as plural spatially multiplexed streams. The present technology is applicable, for example, to a communication apparatus included in a wireless LAN system.

Abstract: Systems and methods of a field deployed access CPE device with smart and efficient agent integrated with an agile software architecture to collect and analyze proactive network maintenance (PNM) management information base (MIB) data. The access CPE device may determine the OFDMA channel's impulse response and group delay, stream the collected data to the operator's streaming and analytics platform to identify cable plant faults, determine whether the identified faults are located inside or outside the customer's home, and mitigate the impact of the identified faults via machine learning models.

Abstract: A terminal receives beams from a plurality of cells that include a non-serving cell and are formed by the same base station. The terminal determines a beam failure or a candidate beam by identifying received signals of the beams from the plurality of cells that include the non-serving cell.

Abstract: A method includes sending, by a master beacon device and one or more beacon repeater devices, ultra-wideband (UWB) beacon frames. The UWB beacon frames are transmitted as interleaved pairs of UWB beacon frames. Each interleaved pair includes a first UWB beacon frame and a second UWB beacon frame. For each interleaved pair, the first UWB beacon frame and the second UWB beacon frame are transmitted with a master time delay. The method further includes receiving, by one or more tag devices, at least one of the interleaved pairs of UWB beacon frames.

Abstract: To maximize throughput, an optimization method includes determining at least one precoding matrix and at least one combining matrix together according to Bayesian Optimization, Causal Bayesian Optimization, or Dynamic Causal Bayesian Optimization, and outputting the at least one precoding matrix and the at least one combining matrix. The at least one precoding matrix is configured for at least one precoder of a transmitter. The at least one combining matrix is configured for at least one combiner of at least one receiver.

Abstract: The present invention is proposed to solve the above problems and is directed to providing a UWB system comprising: a memory in which a UWB ranging factor definition program is embedded; and a processor which executes the program, wherein the processor predefines UWB ranging factors to define an encryption key in consideration of a unique m-byte key characteristic for each set of a vehicle and a device.

Abstract: Devices, systems, methods, and non-transitory media facilitate image rejection for a radio frequency signal with a wideband carrier. Wideband signals from a device may be analyzed, the wideband signals corresponding to a wideband channel. Each wideband signal may correspond to a sinusoidal electrical signal with IQ amplitude and phase modulation. An in-phase component (I) of a wideband signal may be determined. A quadrature component (Q) of the wideband signal may be determined. Based on the determined I and Q, a wideband IQ imbalance may be determined. A scalar error based on the wideband IQ imbalance may be obtained. The scalar error may be mapped to a vector error plane. Orthogonal error vector points that are based on the mapping may be determined. The wideband IQ imbalance of the device may be compensated based on adjusting an IQ setting of the device with the orthogonal error vector points.

Abstract: According to an aspect of the present invention, there is provided a ultra-wideband (UWB) system comprising: a memory in which a UWB ranging factor definition program is embedded; and a processor which executes the program, wherein the processor predefines UWB ranging factors to define a scrambled timestamp sequence (STS) index in consideration of a characteristic of an n-byte random value that is changed every ranging.

Abstract: Provided are M signal processors that respectively generate modulated signals for M reception apparatuses (where M is an integer equal to 2 or greater), a multiplexing signal processor, and N antenna sections (where N is an integer equal to 1 or greater). When transmitting multiple streams, each of the M signal processors generates two mapped signals, generates first and second precoded signals by precoding the two mapped signals, periodically changes the phase of signal points in the IQ plane with respect to the second precoded signal, outputs the phase-changed signal, and outputs the first precoded signal and the phase-changed second precoded signal as two modulated signals. When transmitting a single stream, each of the M signal processor outputs a single modulated signal. The multiplexing signal processor multiplexes the modulated signals output from the M signal processors, and generates N multiplexed signals. The N antenna sections respectively transmit the N multiplexed signals.

Abstract: The ultra-wideband (UWB) system includes an input unit configured to receive information on a separation distance between a tag and a vehicle, a memory in which a ranging program corresponding to the separation distance is embedded and a processor which executes the program, wherein the program determines a ranging scheme and an anchor to perform ranging according to the separation distance.

Abstract: A constant amplitude Radio Frequency (RF) signal is created by ordering complex information bearing symbols in the frequency domain along with their complex conjugates, and performing an inverse Fourier transform. This produces an analytic real-only transformed baseband signal. The real-only baseband signal is used to linearly vary the phase angle of a carrier wave while its amplitude remains constant. After reception, multi-path distortion is canceled. A time series of recovered phase angle is un-transformed with a FFT (fast Fourier transform) to produce I (in-phase) and Q (quadrature) samples. Demodulation occurs in a receiver by recovering carrier's phase angle vs. time. Forward error correction may be applied to data if desired. This may be called PM-OFDM (Phase Modulated-orthogonal frequency division multiplexing).

Abstract: By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.

Abstract: Systems and methods for wideband RF interference detection and suppression include an open-circuit stub, a first voltage peak detector, a second voltage peak detector, an analog-to-digital converter (ADC), and a controller. The open-circuit stub is configured to receive an input signal. The first voltage peak detector is coupled at the open end of the open-circuit stub and configured to output a first voltage signal based on a portion of the input signal. The second voltage peak detector is coupled a distance away from the open end of the open-circuit stub and configured to output a second voltage signal based on the portion of the input signal. The controller is configured to generate an output control signal operable to adjust a signal filter based on the first digital voltage signal and the second digital voltage signal to suppress the portion of the input signal.

Abstract: A data transmission circuit may include a plurality of data transmission lines configured to transmit a victim data signal through a victim data transmission line, and transmit an adjacent data signal through an adjacent data transmission line disposed adjacent to the victim data transmission line; and a data input/output circuit configured to control a reference voltage level reflected into the victim data signal on the basis of data pattern information of the adjacent data signal, and compare the victim data signal to the reference voltage level and output the comparison result.

Abstract: A method for designing a low-complexity linear minimum mean squared error (LMMSE) and zero-forcing (ZF) receivers for MIMO-RCP-OTFS system is disclosed. The method includes steps of: computing a received signal vector (r) and structure of a matrix (?) using a channel matrix (H); reordering the matrix (?) to reduce bandwidth of the matrix (?); computing inverse of a banded matrix (G=LU) by multiplying the matrix (?) with permutation matrix (P) and with transpose of permutation matrix (PT) using Cholskey decomposition; calculating LMSSE/ZF equalized vector ({tilde over (r)}ce) by multiplying inverse of banded matrices with Bw bandwidth (L and U), with the received signal vector (r=Pr) using forward and backward substitution algorithms; reordering the vector ({tilde over (r)}ce) to calculate vector (y); and calculating data vector ({circumflex over (d)}) representing an estimation of low-complexity LMMSE/ZF equalization by multiplying Hermitian matrix (B) with the vector (y).