Abstract: A method, apparatus and system for implementing pre-equalization equalizer tap analysis and correlation in a DOCSIS 3.1 network environment. The disclosed principles improve the pre-equalization analysis in the DOCSIS 3.1 environment by filtering out short distance reflections, which is required for the proper grouping and correlation of modems.

Abstract: Certain aspects of the present disclosure provide methods and apparatus for enhancing a sector sweep. The apparatus generally includes a processing system configured to generate a first set of frames and a second set of frames. The apparatus also includes a first interface configured to output the first set of frames for transmission to a wireless node via a first set of beams, wherein each beam of the first set is wider in a first dimension than a second dimension, and output the second set of frames for transmission to the wireless node via a second set of beams, wherein each beam of the second set is wider in the second dimension than the first dimension.

Abstract: Methods, systems, and devices for wireless communications are described. In some cases, a user equipment (UE) may use multiple antenna ports to communicate with multiple transmission/reception points (TRPs), and each antenna port may correspond to a spatial dimension along which wireless communications may be transmitted. The UE may transmit a first sounding reference signal (SRS) to a serving TRP to aid the serving TRP in determining a subset of spatial dimensions available to the UE along which to transmit downlink transmissions. Upon receiving a downlink transmission from the serving TRP along the subset of spatial dimensions as determined by the serving TRP, the UE may transmit a second SRS to a neighboring TRP to indicate the subset of spatial dimensions. The neighboring TRP avoid transmitting downlink transmissions to the UE or to other UEs along the subset of spatial dimensions, thereby mitigating interference along the subset of spatial dimensions.

Abstract: Systems and methods for random access communication in accordance with various embodiments of the invention are described in which receivers can handle uncoordinated transmissions of a large and unknown number of transmitters. Communication systems in accordance with many embodiments of the invention include a plurality of transmitters that encode message data as symbols using a rateless code. During transmission, the transmitters receive feedback messages at a predetermined set of potential decoding times until an end of epoch message is received. A receiver transmits at least one start of epoch message and, at each of a predetermined set of decoding times, determines whether a decoding rule is satisfied. When the decoding rule is satisfied, the receiver can decode at least one message from observed symbols based upon the rateless code. The receiver can end the transmission epoch by transmitting an end of epoch message.

Abstract: The present disclosure relates to apparatus for correcting a deviation between a plurality of transmission channels, which includes a first transmission channel and a second transmission channel. The first transmission channel and the second transmission channel are respectively connected to a first endpoint and a second endpoint of a correction coupling channel. One example apparatus includes a receiver and at least one processor. The receiver is configured to when a first signal is fed at the first endpoint and a second signal is fed at the second endpoint, respectively detect a plurality of signal vectors based on a plurality of feedback signals of the first transmission channel and the second transmission channel. The at least one processor is configured to determine a deviation correction value between the first transmission channel and the second transmission channel based on the detected signal vectors.

Abstract: A likelihood generation device includes a similarity detection unit, a likelihood table reference unit, and a similarity processing unit. The similarity detection unit receives a modulation scheme selection signal and a received value, detects a likelihood similarity between information bits included in the received value based on the modulation scheme selection signal, and outputs a likelihood selection signal that specifies likelihood data to be searched for and an operation selection signal that specifies an operation on the likelihood data. The likelihood table reference unit registers, as likelihood data, a small region different from other small regions in the likelihood distribution indicating the likelihood of the information bits, and extracts likelihood data based on the likelihood selection signal from the likelihood table.

Abstract: An IQ estimation module comprising a powerup state IQ estimator configured to generate powerup state IQ estimates based on a powerup calibration of the IQ estimation module, a steady state IQ estimator configured to generate steady state IQ estimates during a steady state operation of the IQ estimation module, and an IQ estimate extender configured to determine differences between the powerup state IQ estimates and steady state IQ estimates at their respective frequency bins and adjust the powerup state IQ estimates to improve the accuracy of IQ estimates.

Abstract: Embodiments of methods and systems for supporting coexistence of multiple technologies in a Power Line Communication (PLC) network are disclosed. A long coexistence preamble sequence may be transmitted by a device that has been forced to back off the PLC channel multiple times. The long coexistence sequence provides a way for the device to request channel access from devices on the channel using other technology. The device may transmit a data packet after transmitting the long coexistence preamble sequence. A network duty cycle time may also be defined as a maximum allowed duration for nodes of the same network to access the channel. When the network duty cycle time occurs, all nodes will back off the channel for a duty cycle extended inter frame space before transmitting again. The long coexistence preamble sequence and the network duty cycle time may be used together.

Abstract: According to an embodiment of the inventive concept, a device for PAM-3 signaling includes an encoder selecting one of first to ninth transitions in first and second unit intervals that are successive and mapping data of three bits by using a remaining eight transitions other than the one selected among the first to ninth transitions, and an output driver receiving an output signal of the encoder via an input and generating a multi-level signal having an output voltage of first to third levels. The data of three bits is transmitted to a receiver terminal through the multi-level signal having the output voltage of the first to third levels during the first and second unit intervals that are successive. The device for PAM-3 signaling according to an embodiment of the inventive concept may transmit three bits during two unit intervals and may allow a receiver terminal to detect a windowing phenomenon.

Abstract: A receiver for receiving a signal including a plurality of symbols through a multiple input multiple output (MIMO) channel, and an operation method of the receiver are provided. The receiver includes a demodulator configured to calculate, for each physical channel, Euclidean distances of one or more of the received symbols with respect to all candidate vectors included in an initial candidate vector set and to output information about the Euclidean distances. A vector set detector may select, based on the information, one of a plurality of candidate vector sets having different sizes, as a subsequent candidate vector set for calculating a log likelihood ratio (LLR) of other symbols of the plurality of symbols or an LLR with respect to a second signal received following the first signal.

Abstract: This application discloses a method and an apparatus for transmitting a signal in a wireless communications system. An example method includes: sending or receiving a signal of a first beam in a first beam set within a communication time of the first beam; and sending or receiving a signal of a third beam in a second beam set within a switching gap for switching from the first beam to a second beam in the first beam set. According to the method and the apparatus for transmitting a signal in a wireless communications system in embodiments of this application, overheads can be reduced.

Abstract: A circuit interrupt device provides a controller and method thereof that is programmed to receive a plurality of data sequences, each data sequence containing a set of data points corresponding to a waveform of line current flowing through the circuit interrupt device. The controller performs spectral reduction on the plurality of data sequences using a finite series transform to reduce bandwidth requirement and transmits a spectrally reduced version of the plurality of data sequences to an external system using reduced bandwidth. The data can then be processed and converted to meta data for monitoring and tracking purposes.

Abstract: The present invention provides a method for reporting channel state information. The method includes: receiving, by a base station, a first reference signal sent by user equipment; sending, by the base station, a first parameter set and a second reference signal to the user equipment, where the first parameter set is obtained by the base station by measuring the first reference signal; and receiving, by the base station, a third parameter set sent by the user equipment, where the third parameter set includes a relative value between a parameter in a second parameter set and a parameter in the first parameter set, the second parameter set is obtained by the user equipment by measuring the second reference signal, and the third parameter set and the first parameter set are used by the base station to determine a precoding matrix.

Abstract: The 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). An operating method of a base station in a wireless communication system is provided. The operating method includes estimating a channel for each of a plurality of terminals based on reference signals received from the plurality of the terminals, determining a beamforming vector matrix for each of the plurality of the terminals by considering scheduling and power allocation information based on the estimated channels, and transmitting data to at least one of the plurality of the terminals using the determined beamforming vector matrix.

Abstract: An integrated-circuit output driver generates, in response to an input signal constrained to a first voltage range, a control signal at one of two voltage levels according to a data bit conveyed in the input signal, the two voltages levels defining upper and lower levels of a second voltage range substantially larger than the first voltage range. The output driver generates an output-drive signal constrained to a third voltage range according to the one of the two voltage levels of the control signal, the third voltage range being substantially smaller than the second voltage range.

Abstract: System, methods and apparatus are described that facilitate transmission of data, particularly between two devices within electronic equipment. Transmission lines are selectively terminated in an N-phase polarity encoded transmitter when the transmission lines would otherwise be undriven. Data is mapped to a sequence of symbols to be transmitted on a plurality of wires. The sequence of symbols is encoded in three signals. A first terminal of a plurality of terminals may be driven such that transistors are activated to couple the first terminal to first and second voltage levels. The first terminal may further be driven such that a dedicated transistor is activated to couple the first terminal to an intermediate voltage level.

Abstract: A multiple-input multiple output transmit and receive system includes a first antenna that transmits a first signal at a channel frequency that propagates in a first path and that simultaneously receives a pilot signal at the channel frequency with the transmitting the first signal at the channel frequency, where the pilot signal propagates in a second path. A single-channel duplex transmit-receive system is coupled to an output of the first antenna. A processor is coupled to an output of the single-channel duplex transmit-receive system and configured to determine channel state information of the first path at the channel frequency using the received pilot signal.

Abstract: Systems and technologies described herein provide functionality for a cellular base station to dynamically indicate a reception (Rx) beam to be used by a user equipment (UE). The Rx beam can be indicated explicitly or implicitly. The UE can, for example, use the Rx beam for Physical Downlink Shared Channel (PDSCH) reception, Channel State Information Reference Signal (CSI-RS) measurements, and/or Channel State Information (CSI) calculation at the UE. Systems and technologies described herein are generally useful for systems that use multiple transmission (Tx) beams and/or that support Coordinated Multipoint (CoMP) transmission technology.

Abstract: A time interval measurement code-division multiple access (CDMA) transceiver including a clock manager, a transmit channel, one or more receive channels, and a processor for performing time interval measurement in two-way satellite time and frequency transfer and satellite ranging, is provided. The transmit channel generates a spread signal that is digitally phase modulated to generate and transmit the modulated intermediate frequency signal. The baseband processing of the received signal from each of the remote ground stations is performed in receive channels. A transmission time generation module generates a transmission time measurement and a reception time generation module generates a reception time measurement. The transmission time measurement and the reception time measurement are generated on a latch measurement signal that is received from a latch epoch generation module in each of the receive channels.

Abstract: Various embodiments may be generally directed to antenna array weight vector selection techniques for 60 GHz multiple-input multiple-output (MIMO) communications. In some embodiments, using one or more such techniques, a 60 GHz-capable transmitting device may select respective antenna array weight vectors for two or more transmit antenna arrays, and a 60 GHz-capable receiving device may select respective antenna array weight vectors for two or more receive antenna arrays. In various embodiments, in order to obtain information for use in selecting such antenna array weight vectors, the transmitter and receiver may utilize one or more existing beamforming training algorithms defined for 60 GHz single-input single-output (SISO) communications. In some embodiments, for example, the transmitter and receiver may utilize one or more beamforming training algorithms defined in IEEE 802.11ad-2012. The embodiments are not limited in this context.