Abstract: The disclosure provides a method and a device in a User Equipment (UE) and a base station for wireless communication. The UE receives a target radio signal, transmits a first radio signal in a first time resource pool, and monitors a first signaling in a second time resource pool in a first frequency domain resource; a channel measurement for the target radio signal is used for triggering a transmitting of the first radio signal; the first signaling is transmitted employing a first antenna port group, the first radio signal is used for determining a second antenna port group, and the first antenna port group is different from the second antenna port group; the first signaling is a physical layer signaling. By designing the first signaling, the disclosure achieves a more efficient beam management on unlicensed spectrum, thus improves the overall transmission efficiency and performance of system.

Abstract: Systems and methods that enable and provide compensation for phase noise when performing Channel State Information (CSI) measurements are disclosed. In some embodiments, a method of operation of a User Equipment 5 (UE) comprises determining that a reference signal associated with a CSI Reference Signal (CSI-RS) is present on two Orthogonal Frequency Division Multiplexing (OFDM) symbols onto which the CSI-RS is mapped. The reference signal is a reference signal that is present on OFDM symbols only when CSI-RS is present on the OFDM symbols. The method further comprises producing at 10 least one phase error estimate for the CSI-RS that is mapped onto at least one of the two OFDM symbols based on the reference signal, compensating for phase error on at least one of the two OFDM symbols based on the at least one phase error estimate, and generating and reporting CSI based on the CSI-RS after compensating for phase error.

Abstract: An apparatus generating a packet of signals, a number of preamble signals of a preamble portion for each of a number of radio transmission units, and a number of data signals of a data portion, wherein a phase rotation in frequency domain is equal to a time shift in time domain is applied to each symbol of the number of preamble signals separately, the same phase rotation is applied to each symbol separately, the amount of the phase rotation is different for each preamble signal and each data signal, the amount of the phase rotation of one of the number of data signals and one of the number of preamble signals is both zero, and the amount of the phase rotation is equal between one of the preamble signals and one of the data signals for the same radio transmission unit.

Abstract: This application provides sounding reference signal transmission methods and apparatuses. One method comprises: determining, by a terminal device, that a sounding reference signal (SRS) to be transmitted is an nSRSth transmission of a plurality of SRS transmissions, wherein nSRS is a non-negative integer; selecting, by a terminal device, an antenna group of ? antenna groups to transmit the sounding reference signal (SRS) based on ? and nSRS, such that when sending the SRS for 2? times, the SRS is sent through each of the ? antenna groups at least once, wherein ? is a positive integer greater than or equal to 3; and sending, by the terminal device during the nSRSth transmission, the SRS through antenna ports comprised in the selected antenna group.

Abstract: An integrated circuit receiver is disclosed comprising a data receiving circuit responsive to a timing signal to detect a data signal and an edge receiving circuit responsive to the timing signal to detect a transition of the data signal. One of the data or edge receiving circuits comprises an integrating receiver circuit while the other of the data or edge sampling circuits comprises a sampling receiver circuit.

Abstract: Provided is a transmission method that improves data reception quality in radio transmission using a single-carrier scheme and/or a multi-carrier scheme. The transmission method includes: generating a plurality of first modulated signals s1(i) and second modulated signals s2(i) from transmission data, the plurality of first modulated signals s1(i) being signals generated using a QPSK modulation scheme, and the plurality of second modulated signals s2(i) being signals generated using 16QAM modulation; generating, from the plurality of first modulated signals s1(i) and the plurality of second modulated signals s2(i), a plurality of first signal-processed signals z1(i) and a plurality of second signal-processed signals z2(i) which satisfy a predetermined equation; and transmitting the plurality of first signal-processed signals z1(i) and the plurality of second signal-processed signals z2(i) using a plurality of antennas.

Abstract: The present invention is directed to circuits and communication. More specifically, a specific embodiment of the present invention provides a timing recovery device with two stages. The first stage generates a clock signal to sample the received waveform, and the second stage provides timing-jitter mitigation. The second stage includes a jitter mitigation circuit with coefficients a function of the instantaneous jitter estimate, in addition to a jitter estimation tracking loop consisting of an error generator, a timing error detector and a loop filter to compensate for timing jitter associated with the clock signal. There are other embodiments as well.

Abstract: Embodiments herein provide a transceiver system 1000a-1000f for full-duplex communication. The transceiver system 1000a-1000f includes an electrical balance based duplexer (EBD) 100 coupled with at least one transceiver 200a and 200b and at least one antenna 300a and 300b. The at least one antenna 300a and 300b is configured to transmit first signals and the at least one antennas 300a and 300b is configured to receive second signals using at least one circulators. The EBD 100 is configured to provide an isolation between the transmitting signals and the receiving signals in a same channel full duplex (SCFD) front-end circuit using the at least one circulators.

Abstract: A receiver receives binary information from a transmission using a binary amplitude shift keying where information symbols are represented by a signal including a first power state and a second power state. A duration of a bit includes a first part where the second power state is applied irrespective of which binary value is represented, and a second part where a binary value is represented by any of the first power and a third power state or a combination pattern of the first power state and the third power state. A sampling circuit is arranged to retrieve samples of the received signal during the second part and discard samples during the first part. A duration of the retrieving of samples is selected to be a time corresponding to the duration of the second part plus a time based on an expected synchronization error.

Abstract: A direct digital radio having a high-speed RF front end in communication with an antenna, and a radio subsystem that can be configured to form a programmable multi-standard transceiver system. The high-speed RF front including RF inputs configured to receive a plurality of radio frequencies (e.g., frequencies between 400 MHz to 7.2 GHz, millimeter wave frequency signals, etc.) and wideband low noise amplifiers provides amplified signals to RF data converters, analog interfaces, digital interfaces, component interfaces, etc. The programmable multi-standard transceiver is operable in frequencies compatible with multiple networks such as private LTE and 5G networks as well as other wireless IoT standards and WiFi in multi-standard network access equipment.

Abstract: Systems and methods are disclosed herein that related to Peak-to-Average Power Ratio (PAPR) reduction in a (e.g., massive) Multiple-Input Multiple-Output (MIMO) Orthogonal Division Multiplexing (OFDM) transmitter system. In some embodiments, a method of operation of a MIMO OFDM transmitter system comprises, for each carrier of two or more carriers, performing precoding of a plurality of frequency-domain input signals for the carrier to provide a plurality of frequency-domain precoded signals for the carrier, the plurality of frequency-domain input signals for the carrier being for a plurality of transmit layers for the carrier, respectively. The method further comprises processing the frequency-domain precoded signals for the two or more carriers in accordance with a multi-carrier Convex Reduction of Amplitudes (CRAM) processing scheme to provide a plurality of multi-carrier time-domain transmit signals for a plurality of antenna branches, respectively, of the MIMO OFDM transmitter system.

Abstract: An apparatus and a method for simultaneous localization of multiple targets in 3-D cooperative wireless sensor networks (WSNs), utilizing combined measurements of received signal strength (RSS) and angle of arrival (AoA) are disclosed herein. By exploiting the convenient nature of spherical representation of the considered problem, the measurement models are linearized and a sub-optimal estimator is formulated. The method disclosed herein has a straightforward adaptation to the case where the target's transmit power is also not known. A representative set of simulations and experiments verify the potential performance improvement realized with embodiments of the method for RSS/AoA network localization in 3-D space.

Abstract: A method of calibrating a clock phase and a voltage offset includes receiving an input data signal that is periodically toggled. A clock phase calibration operation is performed based on an up signal and a down signal, such that phases of a plurality of clock signals are adjusted. The up signal and the down signal are generated based on the input data signal, a reference voltage and the plurality of clock signals. A voltage offset calibration operation is performed based on the up signal, the down signal and a first sample data signal, such that a voltage level of the reference voltage is adjusted. The first sample data signal is generated by sampling the input data signal based on one of the plurality of clock signals. The clock phase calibration operation and the voltage offset calibration operation are performed independently of each other and not to overlap with each other.

Abstract: Methods related to radio frequency front end systems. In some embodiments, the method can include providing a first module configured to provide multi-input multi-output (MIMO) receive operations for a first plurality of mid bands and a first plurality of high bands. The first module can be further configured to provide transmit operations for the plurality of mid bands. The first module can include a first node. The method can include providing a second module configured to provide transmit and receive operations for a second plurality of mid bands and a second plurality of high bands. The second module can be a power amplifier integrated duplexer (PAiD) module. The second module can include a second node. The first module and the second module can be coupled by a signal path at the first node and the second node, respectively.

Abstract: A communication device and a communication signal generation method that perform, adaptively, a wired power line communication that is given desired communication characteristics being in such a level as to satisfy user demands is provided. The communication device includes a selection unit a selection unit which selects a mode that prescribes a number of one or more channels prepared in a prescribed frequency band used for a communication to be performed with another communication device via a wired medium and a channel to be used for the communication in the mode; and a signal processing unit which generates communication frames to be used for the communication by performing signal processing on input data according to the selected mode and channel.

Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a wireless device to perform multiple-input, multiple-output (MIMO) transmissions using a reduced number of antennas (e.g., a number of transmit antennas that is smaller than a number of layers of the MIMO transmission). The MIMO transmission may communicate multiple streams of data to a second wireless device. The MIMO transmission may further be used for sensing applications, e.g., based on reflection of the MIMO transmission.

Abstract: A method of analyzing at least one periodic horizontal impairment component of an input signal is described. The input signal is received that includes at least a periodic horizontal impairment component. The at least one periodic horizontal impairment component is analyzed based on a first model, thereby obtaining a first estimated parameter set for each analyzed periodic horizontal impairment component. The at least one periodic horizontal impairment component is analyzed based on a second model, thereby obtaining a second estimated parameter set for each analyzed periodic horizontal impairment component. The first model is different to the second model. Further, the present disclosure provides a measurement instrument.

Abstract: Systems and methods for rapidly finding detectable signals within the field-of-view of a phased array antenna. The transmit beam pattern is modified over time to increase signal spatial search performance over typical time-delay steering by producing a coarse-to-fine angular beam pattern with a tree-based approach to signal detection. A tree-based beam search is employed to select a beam having a narrower beamwidth for transmission at an angle from boresight that lies in an angular space where a signal has been previously detected.

Abstract: A transmitter device includes a transmitter including a first oscillator circuitry, a signal processing circuitry, and a calibration circuitry, and a second oscillator circuitry. The first oscillator circuitry is configured to output a first oscillating signal. The signal processing circuitry is configured to mix calibration signals according to the first oscillating signal, in order to emit a first output signal. The calibration circuitry is configured to detect a power of the first output signal to generate coefficients, and generate the calibration signals according to the coefficients, an in-phase data signal, and a quadrature data signal. The second oscillator circuitry is disposed adjacent to the transmitter, and is configured to output a second oscillating signal. The calibration signals are configured to reduce a pulling generated by both of the first output signal and the second oscillating signal to the first oscillator circuitry.

Abstract: Dynamic reconfiguration of CSI-RS resources for CSI reporting is described for full dimension multiple input, multiple output (FD-MIMO) systems. While a larger number of channel state information (CSI) reference signal (CSI-RS) resources with independent resource configuration are configured and associated with a CSI process, only a subset of resources that are activated by additional signaling are used for CSI measurement and reporting. The set of activated CSI-RS resources may include only a single CSI-RS resource. Both periodic and aperiodic CSI reporting may then be based on the same set of the activated CSI-RS resources. Medium access control (MAC) control elements may be used to provide activation/deactivation of the CSI-RS resources. Additionally, CSI reporting may be based on both the activated CSI-RS resources and the associated number of antenna ports.