Abstract: A receiver includes a first T-coil circuit at an input of the receiver and configured to receive an input signal, a termination impedance coupled to the first T-coil circuit and configured to match an impedance of a transmission line coupled to the first T-coil circuit, and an amplifier including a first input and a second input and configured to amplify a differential signal at the first and second inputs, a calibration switch coupled to the amplifier and configured to selectively electrically connect or disconnect the first and second inputs of the amplifier, and a first receive switch configured to selectively electrically connect or disconnect a center node of the first T-coil circuit and the amplifier.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine to operate in an antenna switch diversity mode to transmit an uplink signal according to an antenna switching pattern, the antenna switching pattern comprising switching between a first transmit chain coupled to a first antenna and a second transmit chain coupled to a second antenna. The UE may transmit at least a first portion of the uplink signal using the first transmit chain coupled to the first antenna, the first transmit chain coupled to the first antenna. The UE may transmit at least a second portion of the uplink signal using the second transmit chain coupled to the second antenna, the second transmit chain coupled to the second antenna.

Abstract: A method is disclosed to identify a port that is associated with a faulty cable. In one embodiment, such a method identifies a cable to replace. The cable provides a path between a first port, residing on a first component, and a second port, residing on a second component. The method further identifies whether an alternative path, bypassing the first cable, exists between the first component and the second component. In the event the alternative path exists, the method sends, over the alternative path, from the first component to the second component, a command to activate an indicator on the second port. This command is received and executed by the second component to activate the indicator. A corresponding apparatus and computer program product are also disclosed.

Abstract: Circuits for identifying interferers using compressed-sampling, comprising: a low noise amplifier (LNA); a passive mixer having a first input coupled to an output of the LNA; a local oscillator (LO) source having an output coupled to a second input of the passive mixer; a low pass filter having an input coupled to an output of the passive mixer; an analog-to-digital converter (ADC) having an input coupled to the output of the low pass filter; a digital baseband (DBB) circuit having an input coupled to an output of the ADC; and a compression-sampling digital-signal-processor (DSP) having an input coupled to the output of the DBB circuit, wherein the compression-sampling DSP is configured to output identifiers of frequency locations of interferers, wherein, in a first mode, the LO source outputs a modulated LO signal that is formed by modulating an LO signal with a pseudo-random sequence.

Abstract: An antenna device includes: a first variable phase amplifier that outputs a first signal to a first transmission line without outputting a second signal to a second transmission line; a second variable phase amplifier that outputs a fourth signal to a fourth transmission line without outputting a third signal to a third transmission line; a phase comparator that acquires a first reflected signal that is obtained by reflecting the first signal by a first antenna element from the second transmission line, acquires a second reflected signal that is obtained by reflecting the fourth signal by a second antenna element from the third transmission line, and detects a phase difference between the first and the second antenna elements based on the first and the second reflected signals; and a phase amplitude controller that calibrates a phase between the first and the second antenna elements based on the detected phase difference.

Abstract: A receiver includes a synchronous detection unit, an elimination unit, and an envelope detection unit. The synchronous detection unit synchronously detects a received signal to generate an I-component and a Q-component. The elimination unit eliminates a noise from the I-component based on the Q-component that is generated by the synchronous detection unit. The envelope detection unit envelope-detects the I-component where the noise is eliminated by the elimination unit and the Q-component to generate an output signal.

Abstract: Systems and methods may provide for establishing a data usage budget based on one or more of user input and historical usage data, wherein the data usage budget distinguishes between usage types and distinguishes between connection types. Additionally, a data usage of one or more client devices may be monitored in accordance with the data usage budget. In one example, the usage types are designated as one or more of a high bandwidth usage and a low bandwidth usage, and the connection types are designated as one or more of a capped connection and a nan-capped connection.

Abstract: The invention discloses a method for fast detection scan of NB-IoT signals in networks. The object of the invention to provide a scanning procedure which is reliable and very fast in order to reduce the search time and hence the power consumption will be solved by a method for fast detection scan of NB-IoT signals in a network by applying a higher sampling rate than 240 kHz and observing a received signal at a receive bandwidth around a magnitude wider than the NB-IoT signal bandwidth of 180 kHz, wherein a set of 2M+1 NB-IoT signals each having a different E-UTRA absolute radio frequency channel number (EARFCN) can be observed simultaneously, whereas M is a natural number and 2M+1 indicates the number of concurrently observed channels.

Abstract: An antenna alignment-monitoring method and an antenna alignment-monitoring system are provided. The antenna alignment-monitoring method includes the following steps. An alignment-monitoring system measures an antenna to obtain azimuth information, tilt information and roll information of the antenna. The azimuth information, the tilt information and the roll information are sent from the alignment-monitoring system to a portable device or a server. The azimuth information, the tilt information and the roll information are sent to the portable device and shown on a user interface for aligning the antenna. The azimuth information, the tilt information and the roll information are sent to the server for monitoring the antenna.

Abstract: Concepts and technologies disclosed herein are directed to millimeter wave (“mmWave”) idle channel optimization. According to one aspect disclosed herein, an antenna system can include an antenna array that is configured in a first antenna configuration. The antenna system can generate and send downlink beams directed towards a network edge. A beam index scanner operating at the network edge can scan the downlink beams to determine beam index scanner data for the first antenna configuration. The beam index scanner can send the bream index scanner data to an antenna technician device. The beam index scanner data can indicate that a downlink channel provided by the downlink beams is not optimized. The antenna system can configure the antenna array in a new antenna configuration in an attempt to optimize the downlink channel provided by the downlink beams.

Abstract: An embodiment of this application provides an antenna port determining method. In a process of determining, based on QCL information and indication information that is used to determine an antenna port number, an antenna port on which downlink data is scheduled, antenna port group information is further introduced, so that the antenna port can be more accurately determined.

Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.

Abstract: Provided are a data transmission method and device. The method includes: processing a first data packet to be sent by using a compression strategy obtained in advance from a receiving end, deleting specified duplicated data comprised in the compression strategy in the first data packet; generating a second data packet to be sent from the processed first data packet, where the second data packet includes a modification record field for indicating the deleted duplicated data; and sending the second data packet to the receiving end.

Abstract: A multi-lane serializer device 1 includes serializer circuits 101 to 10N and a controller 20. A phase difference detector of each serializer circuit detects a phase difference between a load signal and a first clock, and outputs an abnormal detection signal to the controller 20 when the detected phase difference is abnormal. When the controller 20 receives the abnormal detection signal from any of the serializer circuits, the controller 20 transmits a batch reset instruction signal to all the serializer circuits. Then, in all the serializer circuits, when a reset signal generator receives the batch reset instruction signal output from the controller 20, the reset signal generator transmits a reset instruction signal to a load signal generator to reset the operation of a load signal generation in the load signal generator.

Abstract: A system and method are configured to check the health of a TETRA-based communication system without interrupting or degrading the operation of the TETRA base station. The health is checked by at least measuring an uplink RSSI of the TETRA base station and determining a transmitted power level and a location of a transmitter. The measured RSSI is used to determine a strongest RSSI and to obtain the transmitted power level and location of a transmitter corresponding to the strongest RSSI.

Abstract: An object of the present disclosure is to prevent an output level of an analog signal from exceeding a predetermined upper limit value, in a module that adjusts a level of the analog signal. According to the present disclosure, there is provided a signal generation apparatus including an RF base module (12) that converts a digital base band signal for testing into an intermediate frequency (IF) signal and outputs the IF signal, and a control unit (18), in which the RF base module is connected to an RF converter (20) which outputs an analog RF signal obtained by frequency-converting the IF signal, and the control unit clips the IF signal output from the RF base module based on an output level of the analog RF signal output from the RF converter.

Abstract: A system for monitoring passive components of a passive distributed antenna system is disclosed. The system includes a bi-directional amplifier, a public safety monitor coupled to and in communication with the bi-directional amplifier, and at least one smart node coupled to and in communication with the public safety monitor. The at least one smart node is positioned within the passive distributed antenna system and includes a processor, connected to or coupled to a spectrum analysis module configured to monitor signal characteristic information of at least one radio frequency signal passing through the passive distributed antenna system. The processor is configured to transmit the signal characteristic information to the public safety monitor and the public safety monitor generates system performance information based on a signal at the bi-directional amplifier and the transmitted signal characteristic information.

Abstract: A frame synchronization apparatus (10) according to this invention includes a multiplication unit (11) configured to multiply a received signal by an inverse complex number of a predetermined synchronization pattern with respect to a predetermined signal point on a complex space diagram for each of a plurality of symbols of the received signal, an addition average unit (12) configured to perform addition averaging of outputs from the multiplication unit for the plurality of symbols of the received signal, and a synchronization determination unit (13) configured to perform coincidence determination of whether an output from the addition average unit (12) falls within a predetermined coincidence determination range of the predetermined signal point, and determine a synchronization state of the frame synchronization based on a result of the coincidence determination.

Abstract: A beamforming transmission device includes a baseband processing unit, at least one radio frequency unit, and an antenna array unit. The baseband processing unit provides at least one data stream and generates a control signal according to channel state information of at least two pieces of user equipment, wherein the data stream includes data of at least two pieces of user equipment. The radio frequency unit receives the data stream signal and generates at least one radio frequency signal. The antenna array unit receives the radio frequency signal and the control signal and adjusts gains and phases of the antenna array unit according to the control signal such that the radio frequency signal can be formed as a shared beamforming signal for transmitting to at least two pieces of user equipment, wherein the shared beamforming signal includes the data of at least two pieces of user equipment.

Abstract: Bias arrangements for amplifiers are disclosed. An example arrangement includes a bias circuit, configured to produce a bias signal for the amplifier, and a linearization circuit, configured to improve linearity of the amplifier by modifying the bias signal based on an RF signal indicative of an RF input signal to be amplified by the amplifier. The linearization circuit includes a bias signal input for receiving the bias signal, an RF signal input for receiving the RF signal, and an output for providing a modified bias signal. The linearization circuit further includes at least a first linearization transistor, having a first terminal, a second terminal, and a third terminal, where each of the bias signal input and the RF signal input of the linearization circuit is coupled to the first terminal of the first linearization transistor, and the output of the linearization circuit is coupled to the third terminal of the first linearization transistor.