Abstract: Disclosed is a method for performing downlink time difference of arrival (DL-TDoA) by an ultra-wide band (UWB) device that includes selecting at least one active ranging round from a ranging block based on at least one of location information or motion information about the UWB device, transferring, to a UWB sub system, a command including information about the at least one active ranging round, and performing a DL-TDoA operation based on the information about the at least one active ranging round.

Abstract: A data transmission system includes a transmitter circuit. The transmitter circuit receives regular data bits and auxiliary data bits. The transmitter circuit encodes a first subset of the regular data bits to generate a first subset of encoded data comprising pairs of symbols that are used in quadrature amplitude modulation. The transmitter circuit encodes the auxiliary data bits and a second subset of the regular data bits to generate a second subset of the encoded data comprising at least one pair of symbols that are unused for encoding by the quadrature amplitude modulation. The transmitter circuit generates a modulated output signal that indicates the first and second subsets of the encoded data using pulse amplitude modulation.

Abstract: Disclosed are a method for temporal/spatial polarized beams and channel non-reciprocity correction and a multi-beam antenna apparatus using the same. According to one aspect of the present disclosure, a multi-beam antenna apparatus includes an array antenna including transmission antenna elements used for forming a plurality of transmission beams and reception antenna elements used for forming a plurality of reception beams. The multi-beam antenna apparatus separates polarized beams temporally and spatially by using two kinds of different orthogonal polarizations, while corrects a channel non-reciprocity which occurs due to temporal polarization separation.

Abstract: A reduced-complexity Internet of Things sensor is disclosed. An example apparatus comprises memory storing one or more sensor event messages, a radio configured to determine a sensor event, a counter configured to output incremental counter states, and a control circuitry. The control circuitry may be in communication with the memory, the radio, and counter, and the sensor. The control circuitry may be configured to determine, based on the sensor event, a select sensor event message of the one or more sensor event messages. The control circuitry may be further configured to output, via the radio signal, a packet comprising the select event message and an indication of a counter state associated with the sensor event message.

Abstract: A system for co-transmitting discrete power and data over a common high frequency channel includes a power transmitting node, a power receiving node, a data transmitting node, a data receiving node, a power transmitting switch, a power receiving switch, a data transmitting switch, a data receiving switch, a primary power switch, a secondary power switch, a common high frequency channel, a first control unit, and a second control unit. When the primary power switch, power transmitting switch, and power receiving switch are in an activated state, a power signal is transmitted over the common high frequency channel from the power transmitting node to the power receiving node. When the secondary power switch, data transmitting switch, and data receiving switch are in an activated state, a data signal is transmitted over the common high frequency channel from the data transmitting node to the data receiving node.

Abstract: Techniques are provided for radio frequency (RF) sensing using a single wireless device. An example method for determining a distance to an object with radio frequency sensing includes transmitting a radio frequency signal with a transmit channel on a wireless device, receiving a leakage signal with a receive channel on the wireless device at a first time, such that the leakage signal is based on the radio frequency signal, receiving a reflected signal with the receive channel on the wireless device at a second time, such that the reflected signal is based on the radio frequency signal reflecting from the object, and determining the distance to the object based at least in part on a difference between the first time and the second time.

Abstract: A device includes input data lines associated with a first time domain and output data lines associated with a second time domain. Synchronizing circuitry is coupled between the input data lines and output data lines. The synchronizing circuitry is driven by a synchronizing clock signal generated by clock generating circuitry. The clock generating circuitry is coupled to the input data lines and the synchronizing circuitry. In operation, the clock generating circuitry detects signal transitions on the plurality of input data lines. The clock generating circuitry generates the synchronizing clock signal that drives the synchronizing circuitry based on detected transitions, a clock signal of the first time domain, and a clock signal of the second time domain.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, a transmission part (TP) hopping configuration that indicates one or more TPs and a TP hopping pattern associated with one or more hops between the one or more TPs. The UE may communicate, with the base station, using a TP of the one or more TPs based at least in part on the TP hopping configuration. Numerous other aspects are described.

Abstract: Disclosed herein is a reconfigurable phased array and a method for determining the current configuration of a phased array. Certain disclosed embodiments include a reconfigurable phased array including a constellation of antennas configured to receive and transmit radiation towards a far field target. Each of the antennas senses incidental power from the retransmitted radiation from the other antennas of the constellation of antennas. This incidental power may be referred to as mutual coupling. The reconfigurable phased array further includes a computer system configured to: measure the incidental power sensed by the each of the antennas; perform a physical constraint mapping of the constellation of antennas; perform an array shape construction to determine a current position of all the elements based on the physical constraint mapping of the constellation of antennas and the incidental power sensed by each of the antennas.

Abstract: Examples are disclosed that relate to improving security of radio frequency (RF) backscattered communication. In one example, a RF device includes a primary RF signal receiver, a secondary signal receiver, a signal mixer, and a transmitter. The primary RF signal receiver is configured to receive a RF carrier signal sent from a base station. The secondary signal receiver is configured to receive a masking signal from the base station. The signal mixer is configured to generate a response signal based at least on the RF carrier signal and generate a mixed signal by mixing the response signal and the masking signal. The transmitter is configured to broadcast the mixed signal, via backscattering, as a masked backscattered signal.

Abstract: A wireless device, such as a base station, may be configured to determine a set of silent symbols for beam calibration measurements by a User Equipment (UE) for full duplex communication. The wireless device may transmit, to the UE, an indication of the set of silent symbols for the beam calibration measurements by the UE. The wireless device may refrain from transmitting during the set of silent symbols. A wireless device, such as a UE, may receive an indication of a set of silent symbols for a beam calibration measurement by the UE for full duplex communication with a base station. The wireless device may perform beam calibration measurements for beam candidates.

Abstract: A radio frequency receiving device with automatic gain control includes a filtering module, a radio frequency processing module, a controlling unit and a displaying unit. The filtering module is configured to filter a radio frequency signal to generate a filtered signal. The radio frequency processing module includes an amplifier, a detecting circuit and an automatic gain control circuit. The amplifier amplifies the filtered signal to generate a radio frequency output signal. The detecting circuit detects the filter signal to generate a detected signal. The controlling unit generates at least one intensity signal according to the detected signal, and judges the detected signal to generate an automatic gain control signal. The automatic gain control circuit controls the radio frequency output signal according to the automatic gain control signal. The displaying unit turns on or off a plurality of light emitters according to the at least one intensity signal.

Abstract: This disclosure provides a split-path equalizer and a clock recovery circuit. More particularly, clock recovery operation is enhanced, particularly at high-signaling rates, by separately equalizing each of a data path and an edge path. In specific embodiments, the data path is equalized in a manner that maximizes signal-to-noise ratio and the edge path is equalized in a manner that emphasizes symmetric edge response for a single unit interval and zero edge response for other unit intervals (e.g., irrespective of peak voltage margin). Such equalization tightens edge grouping and thus enhances clock recovery, while at the same time optimizing data-path sampling. Techniques are also disclosed for addressing split-path equalization-induced skew.

Abstract: A method of processing a signal in a compressive sensing receiver, includes: obtaining a first signal received via an antenna; generating a first baseband signal by mixing the first signal with a second signal generated by a local oscillator based on a pseudo random binary sequence (PRBS); removing a spurious from the first baseband signal based on a pre-stored estimation value obtained by estimating the spurious generated by the local oscillator in advance; and detecting a spectral slice including the first signal based on the first baseband signal from which the spurious is removed and a measurement matrix.

Abstract: A wireless communication is proposed that utilizes a large available bandwidth (e.g., 10-100,000 MHz) and employs a combination of frequency shifting (from an input RF signal to an IF signal) and frequency hopping from one IF frequency value to another within the available bandwidth. The combination of frequency shifting and frequency hopping adds a level of noise mitigation moving the transmission frequency as a function of time (and avoiding frequencies known to be subject to noise). By its nature, the addition of frequency hopping frustrates the ability of outsiders to access transmissions. A map of frequencies to be used may be delivered to both the transmitter and receiver via a separate command/control signal path. Alternatively, a transmitter may develop the map and forward it to the receiver. The frequency hopping sequence is preferably a randomly-generated sequence that uses the entire available bandwidth.

Abstract: There is disclosed a method of operating a transmitting node in a millimeter-wave communication network. The method includes transmitting millimeter-wave signaling in a transmission timing structure, the transmission timing structure including N time interval elements sequentially ordered in time, the millimeter-wave signaling including N separate signaling structures, each signaling structure being transmitted in a different one of the time interval elements. N is an integer multiple of 2. A first subset of the N separate signaling structures corresponds to control signaling, the subset including 2{circumflex over (?)}m signaling structures consecutive in time beginning with the signaling structure of the first time interval element, and m is an integer such that 2{circumflex over (?)}m<=N. A second subset of the N separate signaling structures corresponds to data signaling, the second subset comprising 0 or an integer number of signaling structures.

Abstract: A method includes determining one or more active slots and inactive slots in an ultra-wide band (UWB) ranging round. The method also includes determining multiple UWB silent periods in the ranging round based on an arrangement of the inactive slots. The method also includes determining a sleep-wake-up schedule that aligns with at least one selected silent period of the multiple UWB silent periods in the ranging round, the sleep-wake-up schedule to be used for Wi-Fi communication. The method also includes waking up a Wi-Fi station (STA) for the Wi-Fi communication during the at least one selected silent period, then going back to sleep according to the sleep-wake-up schedule.

Abstract: Apparatus and methods for modulation partition and transmission via multiple antennas for enhanced transmit power capability are provided herein. In certain embodiments, an RF communication system includes a transceiver that generates a first RF signal and a second RF signal corresponding to partitions of a modulated RF signal. For example, the first RF signal and the second RF signal can be associated with different RB allocations of one or more channels of a frequency band. The RF communication system further includes a first transmit chain that processes the first RF signal to generate a first RF output signal for transmission on a first antenna, and a second transmit chain that processes the second RF signal to generate a second RF output signal for transmission on a second antenna.

Abstract: Ultra-Wideband (UWB) technology exploits modulated coded impulses over a wide frequency spectrum with very low power over a short distance for digital data transmission. Today's leading edge modulated sinusoidal wave wireless communication standards and systems achieve power efficiencies of 50 nJ/bit employing narrowband signaling schemes and traditional RF transceiver architectures. However, such designs severely limit the achievable energy efficiency, especially at lower data rates such as below 1 Mbps. Further, it is important that peak power consumption is supportable by common battery or energy harvesting technologies and long term power consumption neither leads to limited battery lifetimes or an inability for alternate energy sources to sustain them. Accordingly, it would be beneficial for next generation applications to exploit inventive transceiver structures and communication schemes in order to achieve the sub nJ per bit energy efficiencies required by next generation applications.

Abstract: Method, apparatuses, and computer program product for providing an efficient receiver beam selection scheme during positioning which utilizes the uplink (UL). One method may include creating a group of user equipment with one or more user equipment according to user equipment characteristics. The method may also include assigning a group identification for the group of user equipments. The method may further include assigning an anchor user equipment for the group of user equipments.