Abstract: A satellite radio signal receiver includes a receiving section which receives radio signals from satellites and demodulates the signals to identify bits of the demodulated signals as received bits; and a processor. The processor compares each received bit of the satellites with estimated bits which are estimated to be received within a possible deviation range from a current date and time acquired as a reception timing of the received bit to obtain comparison result information between the received bits and the estimated bits in relation to deviations within the possible deviation range with respect to each of the satellites, integrates the comparison result information on the received bits of the satellites, specifies a deviation that satisfies a match condition of the received bits and the estimated bits based on the integrated comparison result information, and acquires date and time information based on the deviation that satisfies the match condition.

Abstract: In one embodiment a transmitter is disclosed.

Abstract: A method is provided by which a multiple-input multiple-output (MIMO) receiver, which includes a plurality of antennas, processes received signals. The MIMO receiver determines a detection order, which is the order of processing received signals received by a plurality of layers through the plurality of antennas, by using channel information of a reference resource element (RE). The MIMO receiver generates common multi filters for processing the received signals in accordance with the detection order, generates an RE group, which includes a plurality of REs and in which the common multi filters generated on the basis of the reference RE will be shared, and generates detection signals from each received signal of the REs by applying the common multi filters to each received signal of the REs excluding the reference RE in the RE group. The RE group comprises REs having the same detection order as that of the reference RE.

Abstract: A method (1100) for cross-polarization interference power suppression in dual-polarization radio communication systems includes: filtering (1101) a vertical polarization component (xV(n)) and a horizontal polarization component (xH(n)) of a received dual-polarization channel signal by a 2×2 channel weights matrix (507, 508); and determining (1102) the 2×2 channel weights matrix (507, 508) based on a minimum variance distortionless response criterion.

Abstract: A low-power synchronizer circuit, a data processing circuit that incorporates the synchronizer circuit, and a synchronization method are provided. The synchronizer circuit includes a delay circuit for receiving and delaying an asynchronous input signal, a first flip-flop having an input terminal connected to an output terminal of the delay circuit, a clock terminal for receiving the asynchronous input signal, and a reset terminal for receiving the asynchronous input signal, a synchronizer connected to an output terminal of the first flip-flop, and a clock-gating circuit for receiving a clock signal and determining whether to supply the clock signal to the synchronizer in response to one of a first output value of the delay circuit and a second output value of the first flip-flop and a third output value of the synchronizer.

Abstract: A pulse width modulation system comprises an analog component and a digital component. The analog component operates to separate a local oscillator signal with different phase shifts and introduce an offset (i.e., a time delay) to analog signals being receive at an input with a tuning operation that fine tunes in the analog signals in the analog (continuous time) domain. The analog component comprises a plurality of analog delay lines that respectively process carrier signals having a different phase shifts. Digital delay lines convert the analog signals to digital square waves with the same time delay and at the same resolution as the analog output signal.

Abstract: A circuit according to an embodiment includes a first slicer connected to an input port and a threshold circuit connected to a threshold port of the first slicer and configured to generate a first threshold voltage according to at least a first magnitude of a nominal value of a leading bit in a signal received at the input port. The first slicer is configured to slice the signal according to the first threshold voltage. In some embodiments, the threshold circuit calculates the first threshold voltage according to at least the first magnitude of the nominal value of the leading bit in the signal and a second magnitude of an interference voltage caused, in the leading bit, by a preceding bit.

Abstract: Provided is a base-station device, a terminal device, a transmission method, and a reception method that realize efficient transmission in a radio communication system that performs large-scale MU-MIMO transmission. The base-station device having a plurality of antennas and performing communication with a plurality of terminal devices simultaneously, includes a channel state information acquisition unit for acquiring channel state information with respect to the plurality of terminal devices; a signal spreading unit for performing spreading and multiplexing for a plurality of signals addressed to each of the terminal devices by using a spread code in a spatial direction of each of the terminal devices; and a precoding unit for applying precoding to the signals, which have been spread and multiplexed, based on the channel state information.

Abstract: The invention relates to a method for serial data transmission, comprising the steps consisting in computing the running disparity (RD) of a bit stream that is being transmitted; when the running disparity reaches a threshold (T), computing a point disparity on a subsequent frame (S) of the stream; if the point disparity has the same sign as the threshold, inverting the states of the bits of the frame in the transmitted bit stream; and inserting into the transmitted bit stream a polarity bit having a state signalling the inversion.

Abstract: Methods and apparatus reducing or eliminating the number of multipliers in Schnorr-Euchner expansion algorithms are disclosed. Methods and apparatus for implementing Schnorr-Euchner expansion algorithms with a reduced number of multipliers or without any multipliers are also disclosed. Also disclosed is a Schnorr-Euchner expansion method for a multiple-input multiple-output communication system. The method includes receiving, by a plurality of input terminals, a plurality of input signals. The method also includes detecting a symbol transmitted by each input signal. The detection includes identifying a list of possible symbols that may be transmitted by each input signal. A cost value for each possible symbol is determined based on a cost function. The cost function is implemented without requiring a multiplier. The possible symbol with a lowest cost value is identified as the transmitted symbol.

Abstract: A down-conversion circuit for a receiver circuit is disclosed, the down-conversion circuit comprises a first passive switching mixer arranged to down-convert a received radio frequency, RF, signal with a first local oscillator, LO, signal (LO1) having a first duty cycle for generating a first down-converted signal at an output port of the first passive switching mixer. The down-conversion circuit further comprises a second passive switching mixer arranged to down-convert the received RF signal with a second LO signal (LO2) having the same LO frequency as the first LO signal (LO1) and a second duty cycle, different from the first duty cycle, for generating a second down-converted signal at an output port of the second passive switching mixer.

Abstract: Hybrid intra-cell/inter-cell remote unit antenna bonding in multiple-input, multiple-output (MIMO) distributed antenna systems (DASs), and related components, systems, and methods. The MIMO DASs are capable of supporting distributed MIMO communications with client devices. To provide enhanced MIMO coverage areas, hybrid intra-cell/inter-cell remote unit antenna bonding is employed. For example, if a client device has acceptable MIMO communications signal quality with MIMO antennas within a single remote unit, intra-cell bonding of the MIMO antennas can be employed to provide MIMO coverage for MIMO communications, which may avoid power imbalance issues that would result with inter-cell bonded MIMO antennas. However, if a client device has acceptable MIMO communications signal quality with MIMO antennas in a separate, neighboring remote unit(s), inter-cell bonding of the MIMO antennas can be employed to provide MIMO coverage for MIMO communications.

Abstract: A direct communication network system and a signal synchronization method thereof are provided. The direct communication network system includes a first direct communication apparatus and a second direct communication apparatus. The first direct communication apparatus synchronizes with a base station within communication coverage of the base station. The second direct communication apparatus synchronizes with the first direct communication apparatus outside the communication coverage of the base station according to at least one first synchronization signal of the first direct communication apparatus. The first direct communication apparatus determines an abnormal synchronization status with the base station, and adjusts a transmitting status of the at least one first synchronization signal.

Abstract: Methods and apparatus are provided for modeling of a physical system using two-dimensional look-up tables.

Abstract: The present disclosure relates to a superposed signal sampling apparatus, including: a signal receiving module, a signal extracting module, and a signal output module. The signal receiving module is used to receive a superposed signal. The signal extracting module is used to determine whether the received superposed signal is within a preset threshold range of a direct current signal; if the received superposed signal is within the threshold range, extract a previously received signal as a direct current signal to be output; and if the received superposed signal is beyond the threshold range, extract a currently received signal as a direct current signal to be output. The signal output module is used to integrate the direct current signal extracted by the signal extracting module, and then output the direct current signal. The present disclosure further relates to a superposed signal sampling method.

Abstract: A slave control device receives a communication signal from a master control device, and controls loads according to the received communication signal. A modulator superimposes the communication signal from the master control device on power source lines, and a demodulator demodulates the communication signal superimposed on the power source lines and supplies the demodulated communication signal to the slave control device. The modulator is provided on power source lines on a battery side, and the demodulator is provided on the power source lines on a load side. The modulator superimposes the communication signal on the power source lines which are on a side closer to the loads with respect to the modulator among the power source lines.

Abstract: An improvement in a Two Way Automated Communications System (TWACS) requires only three of six previously required vectors to communicate with remote communication equipment (RCE) devices installed in the three phases of a utility's low voltage distribution network for concurrent outbound signal communications over the TWACS. The reduction in vectors allows an outbound injection silicon-controlled rectifier (SCR) array used for such purposes to be greatly simplified and further allows the SCRs in the array to be operated independently, and therefore concurrently.

Abstract: An apparatus including a building information model (BIM) of a secured area having a plurality of different portions, the BIM embodied in a memory, a processor that identifies portions of the secured area having different levels of security and a processor that alerts a user of a security weakness based upon an interaction between the security levels and physical characteristics of the secured area defined by the BIM.

Abstract: In one implementation, an apparatus estimates body core temperature from an infrared measurement of an external source point using a cubic relationship between the body core temperature and the measurement of an external source point is described, estimates temperature from a digital infrared sensor and determines vital signs from a solid-state image transducer, or determines vital signs from a solid-state image transducer and estimates body core temperature from an infrared measurement of an external source point using a cubic relationship between the body core temperature and the measurement of an external source point; after which the estimated and/or determined information is transmitted to an external database.

Abstract: An electronic device is provided. The electronic device includes a communication unit configured to communicate with at least one a first electronic device or at least one second external device by at least one communication method, and a control unit configured to, when a message is received from the first electronic device, identify at least one of the second electronic device to which a message is sent in response to the message received from the first electronic device, create the message that is to be sent to the identified second electronic device, and send the created message to the second electronic device. Other various embodiments may be provided.