Abstract: A control and processing system for use with an interrogator and an interrogation system employing the same. In one embodiment, the control and processing system includes a correlation subsystem having a correlator that correlates a reference code with a reply code from a radio frequency identification (RFID) tag and provides a correlation signal therefrom. The control and processing system also includes a decision subsystem that verifies a presence of the RFID tag as a function of the correlation signal.

Abstract: A digital pre distortion (DPD) calibration coefficient control method and apparatus are applied to a microwave communications device that includes an analog device and a digital device, and can ensure a DPD calibration effect, where the method includes determining, by interpolation and according to DPD calibration coefficients corresponding to at least 2N typical working states of the analog device obtained in advance, a specified DPD calibration coefficient corresponding to a specified working state of the analog device, where N is a quantity of parameters representing a working state of the analog device, and controlling a DPD calibration coefficient according to the determined specified DPD calibration coefficient corresponding to the specified working state of the analog device.

Abstract: The communication process for high-sensitivity and synchronous demodulation signals between a transmitter (2) and a receiver (3) comprises a first synchronisation phase followed by a modulation and demodulation phase of the data. To achieve this, the transmitter transmits a pseudo-periodic chirp signal to the receiver, where a frequency conversion of the chirp signal is performed in a mixer (33) by an oscillating signal (So) at constant frequency of a local oscillator (34) to supply an intermediate signal, which is filtered and sampled for a logic unit (37). An assembly (38) of m pairs DFT blocks phase-shifted in relation to one another and operating in parallel is provided in the logic unit. A processing unit (39) receives the result of the pairs of the assembly to determine frequency and phase errors between the transmitter and the receiver on the basis of two peaks detected by one of the pairs above a threshold to synchronise the receiver.

Abstract: Provided are a method and apparatus for estimating and correcting the phase error in 5G or pre-5G communication systems providing much higher data rates compared to existing 4G communication systems including LTE systems. The existing phase error estimation scheme using a cyclic prefix in the time domain may fail to prevent performance degradation due to inter-carrier interference. In the present invention, it is possible to enhance reception performance of the receiver by estimating and correcting the phase error multiple times within a symbol using a time domain signal and by reducing the influence of inter-carrier interference.

Abstract: Aspects of the subject disclosure may include, for example, determining whether communications are encrypted, determining a communication type for the communications according to sensitivity criteria, encrypting the communications according to the communication type to generate encrypted communications, and transmitting to a second network device the encrypted communications. Other embodiments are disclosed.

Abstract: A base station (BS) capable of communicating with a user equipment (UE) includes a transmitter configured to transmit, to the UE, downlink signals including precoding matrix indicator (PMI) codebook parameters comprising: first and second quantities of antenna ports, N1 and N2, indicating respective quantities of antenna ports in first and second dimensions of a dual-polarized antenna array at the BS; first and second oversampling factors, O1 and O2, indicating respective oversampling factors for Discrete Fourier Transform (DFT) beams in the first and second dimensions; and a beam group configuration among a plurality of beam group configurations. The BS also includes a receiver configured to receive uplink signals including a plurality PMIs from the UE determined using a PMI codebook corresponding to the transmitted PMI codebook parameters; and determine a precoder using the received PMIs. Other embodiments including methods and UEs and methods are disclosed.

Abstract: A receiver frontend having a high-frequency AC-coupled path in parallel to a low-frequency feed-forward path for baseline correction. The low-frequency path blocks the DC common-mode voltage of the input differential signal pair, but passes low-frequency differential signal components (e.g., long strings of a single value, or disparities in the number of 1's and 0's over a long period of time.) The low-frequency path can include a passive network for level shifting and extending the range of acceptable common-mode input voltages. The low-frequency path can also include a differential (e.g., transconductance) amplifier to isolate the common-mode input voltage from the output of the baseline wander correction circuit.

Abstract: Various embodiments relate to a network node and method thereof including a high stability oscillator and a holdover phase-locked loop (“PLL”) wherein the holdover PLL is configured to perform a holdover function by receiving a system clock signal, disciplining the high stability oscillator using the system clock signal to generate a local reference signal, and providing the local reference signal as the system clock signal when the system clock signal becomes unavailable.

Abstract: Cross-phase interference occurs in dual polarized or orthogonal polarized microwave links when independent local oscillators (LOs) are utilized in each outdoor unit (ODU) transceiver operating on the same frequency channel. If the cross-phase noise is not compensated the performance of the microwave link will be degraded. In order to reduce cross-phase noise two or more pilot symbols are utilized to enable cross-phase noise estimates to be determined at the receiver of the microwave link. The pilot symbols enable a cross-phase noise compensation factor to be determined for the signal from the one or more cross-phase noise estimates. The received signal can then be compensated using the estimated cross-phase noise compensation factor.

Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). Disclosed is a method of reporting beam measurement state information by a User Equipment (UE). The method may include: measuring beam state information by using a first reception chain and a second reception chain; controlling beam state information on the first reception chain to correspond to beam state information on the second reception chain; calculating state information on each beam based on the controlled beam state information on the first reception chain and beam state information on the second reception chain; and reporting state information on one or more beams.

Abstract: A circuit arrangement for clock and data recovery comprises a control unit, a phase-locked loop circuit and a sampling unit. The control unit is configured to derive a first reference signal and a second reference signal from an input signal. Furthermore, the control unit is configured to derive a common reference signal from one of the first reference signal and the second reference signal, selected depending on a mode of operation of the circuit arrangement. The phase-locked loop circuit is configured to generate an oscillator signal based on the common reference signal. The sampling unit is configured to extract a recovered data signal from the input signal.

Abstract: A system for digital self-interference cancellation includes a filter that generates a reduced-noise digital residue signal; a channel estimator that generates a current self-interference channel estimate from a digital transmit signal, the reduced-noise digital residue signal, and past self-interference channel estimates; a controller that dynamically sets the digital transform configuration in response to changes in a controller-sampled digital residue signal; and a channel memory that stores the past self-interference channel estimates.

Abstract: The present invention teaches a system and method for signal recovery for range and coverage extension in a heterogeneous cooperative network of digital chaos transmissions with OFDM component signal transmission. The invention improves upon the state of art in side channel information from the transmit side containing information on the clipped amplitude. In-band transmission of the side information is achieved by exploiting the sparsity of the resulting clip amplitude position in conjunction with hash function to map keys to values, where the values at the position location for the clipped amplitude. The information rate of the clipped amplitude is sub-Nyquist relative to the original OFDM component signal transmission, which allows very low power spreading by a cooperative digital chaos sequences at a transmit side and recovery of the clipped amplitude at a receive side.

Abstract: A quadrature phase detector circuit for a multi-antenna radio circuit comprising a plurality of frequency synthesizers using a common reference oscillator signal is disclosed.

Abstract: A quantum mechanical radio frequency (RF) signaling system includes a transmission line that receives and conducts an RF pulse signal operating at a radio frequency, a first qubit having a quantum mechanical state that is a linear combination of at least two quantum mechanical eigenstates, and a first network of reactive electrical components having an input that is coupled to the transmission line for receiving the RF pulse signal and an output that is coupled to the first qubit. The first network of reactive electrical components attenuates the amplitude of the RF pulse signal and produces a first attenuated RF pulse signal that is applied to the first qubit. The first attenuated RF pulse signal operates at the radio frequency and has a first attenuated amplitude that causes a predefined change in the linear combination of at least two quantum mechanical eigenstates within the first qubit.

Abstract: Apparatus and methods are provide for a multichannel clock and data recovery (CDR) device that shares information between channels. In an example, a multiple channel communication circuit can include a plurality of clock and data recovery (CDR) circuits, each CDR circuit of the plurality of CDR circuits associated with a channel of the multiple channel communication circuit. In certain examples, each CDR circuit can be configured to detect an incoming stream of data from the channel, to determine a setting of one or more parameters for correctly sampling the data from the incoming stream, and to share an indication of the setting of the one or more parameters to an adjacent CDR circuit of the plurality of CDR circuits.

Abstract: The present invention proposes a method for providing a broadcast service. The method for providing a broadcast service in a broadcast signal transmitter according to the present invention may comprise the steps of: encoding media data to a media stream; creating signaling information for signaling the media stream; multiplexing the encoded media stream and the signaling information; and transmitting a broadcast signal comprising the multiplexed media stream and the signaling information.

Abstract: Described is an apparatus which comprises: samplers operable to perform linear equalization training and to perform function of an un-rolled decision feedback equalizer (DFE); and logic to select output of offset samplers, from among the samplers, when two adjacent bits of an input signal are the same. Described is an equalization scheme which comprises a linear equalizer (LE) operable to match a first post-cursor residual ISI tap to a first pre-cursor residual ISI tap for a non-lone bit transition of the input signal.

Abstract: Disclosed are: a communication technique for fusing, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4 G system and subsequent systems; and a system thereof. The present disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety-related service and the like) based on 5G communication technology and IoT related technology. The present disclosure presents a method by which a base station determines the approximate location of a terminal on the basis of a reception power report, and sets a codebook subset on the basis of the approximate location of the terminal so as to reduce a channel state report burden.

Abstract: A baseband filter unit inputs a received signal including a sine wave at least in a portion of the received signal. A differentiator differentiates the received signal. A first correlator correlates the received signal differentiated and a cosine waveform. An acquisition unit acquires a value of the received signal as an offset value, at a time estimated based on a result of correlation in the first correlator and at a time when the received signal includes a sine waveform. A correction unit corrects the received signal in accordance with the offset value acquired in the acquisition unit.