Abstract: An RF receiver comprises a down-converting and sampling circuit (104) adapted to: receive an RF input signal (RFIN) having a signal band (BWRF) comprising a plurality of sub-bands (BWIF), each sub-band comprising a plurality (2K) of channels separated by frequency channel spaces (?fCH); and perform frequency transposition and sampling to generate a discrete time signal in which a selected one of the plurality of sub-bands is brought from an initial frequency band to a lower frequency band (IF20±K?fCH); and a discrete time filter (108) having a variable pass band, the central frequency (f0) of the discrete time filter being controllable to select any one of the plurality (2K) of channels of the selected sub-band.

Abstract: In general, this disclosure describes location techniques for a mobile device. A mobile device may request permission from a server device to perform a ranging operation. Responsive to receiving an indication of allowance, the mobile device may output a first data packet via a radio signal, which is received by a beacon device that activates an ultrasonic transponder upon receipt of the first data packet. The mobile device then outputs a second data packet via an ultrasonic pulse. The beacon device receives the ultrasonic pulse and outputs a third data packet via a second radio signal that includes information identifying the beacon device. The mobile device calculates a time difference between outputting the ultrasonic pulse and receiving the second radio signal and determines its location based on the third data packet and the time difference.

Abstract: A method of reception of signals transmitted by a FBMC transmitter using a block Alamouti coding. After demodulation in a base band, the received signal is sampled, with the sample blocks undergoing a sliding FFT before being de-multiplexed towards a first path during a first use of the channel and a second path during a second use of the channel. The vectors received on the first path are multiplied by a first and a second transfer matrix, conjugated to provide first and second vectors. The vectors received on a second path undergo time-reversal and complex conjugation and, if appropriate, multiplication by an imaginary factor, depending on the size of the blocks. The vectors thus obtained are multiplied by first and second transfer matrices to provide third and fourth vectors.

Abstract: A communication device detects whether anomalous events occur with respect to at least one node in a utility network. The communication device has recorded therein threshold operating information and situational operating information. The threshold operating information includes data indicative of configured acceptable operating parameters of nodes in the network based on respective locational information of the nodes. The situational information includes data indicative of configured operation data expected to be received from nodes in the network during a predetermined time period, based on a condition and/or event occurring during the time period. The communication device receives operation data from nodes in the network, and determines whether the operation data from a node constitutes an anomalous event based on a comparison of the received operation data with (i) the threshold operating information defined for the node and (ii) the situational information.

Abstract: An operation method of communication node in a vehicle network is provided. The operation method includes transitioning from a sleep mode to an active mode and generating a first message that includes a first information indicating at least one communication node to be operated in the active mode. In addition, the method includes transmitting the first message to a second communication node to thus enhance performance of a vehicle network.

Abstract: A touch sensitive device includes a touch interface having rows and columns, a signal generator for generating a plurality of unique orthogonal signals in a first range and having a first frequency spacing on at least a plurality of the rows, respectively, and a heterodyning frequency converter. The heterodyning frequency converter receives a signal present on a column, the signal comprising signals within the first range and having the first frequency spacing. The heterodyning frequency converter converts the signal to a heterodyned signal comprising signals in a second range and having the first frequency spacing, and outputs the heterodyned signal. A touch processor identifies touch on the touch interface at least in part by processing the heterodyned signal.

Abstract: Embodiments of the present disclosure provide a wireless communications method, user equipment, a base station and a system, and relate to the field of wireless communications. The method includes: acquiring a frequency domain spreading factor, a symbol-level spreading factor and a transmission time interval-level spreading factor; and performing frequency domain spreading, symbol-level spreading and transmission time interval-level spreading on first to-be-sent information respectively according to the acquired spreading factors and sending first spread information; or, despreading, according to the acquired spreading factors, second spread information sent by a base station.

Abstract: The high-speed and high-quality reception operation of a transimpedance amplifier of an optical communication module and a router including the same can be achieved. A preamplifier performs current/voltage conversion with respect to intersymbol interference due to bandwidth shortage of a laser diode. A threshold control circuit which generates positive and negative threshold voltages with respect to a center potential of an output signal, latch circuits, and a selector circuit are provided to the output of the preamplifier. An NRZ signal is received as a duobinary signal based on the sign determination result of the previous bit. The determination error rate of the latch circuits can thus be improved.

Abstract: Disclosed is a method of transmitting data over a plurality of wireless frequency bands between a transmitter and a receiver during one of a plurality of rounds, the method comprising: computing a target spacing in time between a start time of transmission in a first band and a start time of transmission in a second band dependent on a first data rate in the one round and in the first band; commencing transmitting, by the transmitter, a first frame of data over the first band at the first data rate; waiting for the computed target spacing to elapse, and then commencing transmitting, by the transmitter, a second frame of data over the second hand at a second data rate.

Abstract: Various devices and methods are provided that use enhanced downlink demodulation reference signals (DMRS) to facilitate inter-cell interference cancellation and suppression. Coordinated configuration of DMRS port assignments for transmission from cells in a group of neighboring cells is provided. Each cell's physical cell identification (PCID) is mapped with its corresponding assigned antenna port(s).

Abstract: A transmitting apparatus includes a frame generator configured to map data included in an input stream to at least one signal processing path to generate a frame, an information inserter configured to insert signaling information to a signaling region of the frame, and a transmitter configured to transmit the frame with the signaling information inserted therein. The signaling information including input stream synchronizer (ISSY) mode information, receiver buffer size information required according to the ISSY mode information, and time information representing a time between a P1 symbol of a preset frame for transmitting a user packet and an output of a preset bit of a first user packet of the user packet.

Abstract: A system and method for the efficient compression of the Channel State Information (CSI) in a wireless network with very low complexity and implementation cost. In accordance with the present invention, the CSI can be approximated as the summation of very few sinusoids on constant frequencies and the parameters of the sinusoids can be found efficiently by very simple calculations such as dot products of vectors which are implementable in hardware at very low cost.

Abstract: According to embodiment of the present invention, there is provided a radio base station (20) and a corresponding method for estimating the quality of the uplink control channel. The method comprises measuring (32, 42) a quality parameter of the uplink data channel, and using (38, 50) this to estimate the quality of the uplink control channel. In one embodiment, measurements of the uplink control channel are taken and their reliability determined. If the reliability is low (i.e. below a threshold, or below the respective measurements taken on the uplink data channel), then measurements on the data channel are used instead of those made on the control channel to estimate the control channel quality.

Abstract: Transmitter noise cancellation may be applied on a channel by channel basis to active channels of an incoming radio frequency signal received at a receiver. A noise cancellation filter may be provided for each active channel in a predetermined signal band. Applying noise cancellation on a per active channel basis instead of to the entire receive band may substantially reduce the filtering requirement and number of filter coefficients or taps to save power and reduce manufacturing costs. Channelized transmitter noise cancellers, multi transmitter-receiver cross coupling cancellers, and hybrid full signal band and channelized transmitter noise cancellers are also provided.

Abstract: An arithmetic apparatus to calculate an interference suppression parameter for a radio device includes a predictive value calculator, a predictive error calculator, and an interference suppression parameter calculator. The predictive value calculator calculates a predictive value for a radio communication channel between radio devices. The predictive error calculator calculates a predictive error in the radio communication channel based on the predictive value. The interference suppression parameter calculator calculates an interference suppression parameter available to suppress an interference in the radio communication channel, the interference suppression parameter being orthogonal to the predictive value and the predictive error in a vector space.

Abstract: The present disclosure relates to a digital frontend system for a radio device comprising a digital filter arranged for receiving digital quadrature signals and for filtering the digital quadrature signals and for outputting filtered quadrature signals; a conversion circuit arranged for receiving the filtered quadrature signals and for performing a rectangular to polar conversion of the filtered quadrature signals and for outputting a plurality of polar signals, characterized in that, the plurality of polar signals comprising an amplitude signal and quadrature phase signals.

Abstract: Apparatus and methods for signal generation, reception, and calibration involving quadrature modulation and frequency conversion. Embodiments of the present invention provide extremely wide bandwidth, high spectral purity, versatility and adaptability in configuration, and ease of calibration, and are particularly well-adapted for use in integrated circuitry.

Abstract: A method and an apparatus for separating a composite signal into a plurality of signals is described. A signal processor receives a composite signal and separates a composite signal in to separate output signals. Pre-demodulation signal values are used to adjust the demodulation scheme.

Abstract: The invention relates to a transmitting system, comprising an SNS client that receives SNS messages from at least one SNS server, and a transmitter which transmits a broadcast signal, including the SNS messages and mobile service data, for a mobile broadcast. The transmitter includes: an RS frame encoder, which performs RS encoding and CRC encoding on the mobile service data for the mobile broadcast so as to build RS frames, and divides each RS frame into a plurality of portions; a group-forming unit, which forms data groups that contain each of the plurality of portions, and which adds known data sequences and signaling data to each data group; an inter-leaver for interleaving data of the data groups; and a trellis encoding unit for trellis-encoding the interleaved data.

Abstract: A method for channel estimation includes determining position information of a main transmission point with a primary transmission path to the communications device and of at least one mirror transmission point associated with the main transmission point by at least one secondary transmission path between the main transmission point and the communications device, estimating a primary channel between the main transmission point and the communications device and at least one secondary channel between the at least one mirror transmission point and the communications device in accordance with the position information of the main transmission point and of the at least one mirror transmission point and position information of antennas in an antenna array of the communications device, and instructing use of the estimated primary channel and the at least one estimated secondary channel.

Abstract: Systems and methods for identification and demodulation of complex signal formats are disclosed. In an example embodiment of the disclosed technology, a method includes identifying the signal's frame (or pattern) length, identifying the various modulation formats that compose the frame, determining the ratio of the various modulation formats in the frame, and determining the actual pattern arrangement in the frame. Further, a method can include comparing the determined arrangement to reference patterns to determine the complex signal format.

Abstract: A waveform conversion unit (42) of a numerically controlled oscillator has a cosine table (101) and a sine table (102) in which parameters for cosine wave and sine wave signal generation are stored, a correction mechanism (50) for generating correction values according to the phase of an inputted phase signal, an adder (111) for generating a cosine wave signal from a parameter in the cosine table (101) and a correction value, and an adder (112) for generating a sine wave signal from a parameter in the sine table (102) and a correction value. The correction mechanism (50) uses waveform data which is a kind of parabolic data and whose phase interval is more minute than the phase interval of the parameters in each table (101), (102) to generate correction values for correcting cosine wave and sine wave signals to be found by linear interpolation.

Abstract: Disclosed herein is a method for sending a broadcast signal. The method includes formatting input streams into multiple data pipes (DPs). Formatting the input streams into the multiple DPs includes splitting the input streams into multiple data streams, deleting a null packet included in a data stream, and forming a baseband frame (BBF) by adding a header to the data stream. The baseband frame includes a deleted null packet (DNP) field indicative of the number of deleted null packets, and the DNP field comprises at least one of a first DNP or a second DNP.

Abstract: A method for processing a digital audio broadcast signal in a radio receiver includes: receiving a digital audio broadcast signal; demodulating the digital audio broadcast signal to produce an analog audio stream and a digital audio stream; determining a digital signal quality value for the digital audio stream; blending an output of the radio receiver from the analog audio stream to the digital audio stream when the digital signal quality value exceeds an adaptive analog-to-digital threshold value; and blending the output of the radio receiver from the digital audio stream to the analog audio stream when the digital signal quality value falls below an adaptive digital-to-analog threshold value, wherein the adaptive digital-to-analog threshold value is lower than the adaptive analog-to-digital threshold value.

Abstract: Systems and methods for autonomous signal modulation format identification are disclosed. In an example embodiment of the disclosed technology, a method includes mapping an input signal to Stokes space to generate a representation of the input signal in three-dimensional space. The method may further include determining the dimension of the representation and, based on the dimension, selecting a subset of modulation from a plurality of mutually exclusive subsets of modulation formats. Further, the method may include defining a cost function for identifying the modulation format from the selected subset and evaluating the cost function to identify the modulation format.

Abstract: A reader for wirelessly receiving a signal from a tag, the signal having a portion on a first side, a portion on a second side and a synchronization sequence to be detected between the first and the second side, wherein the portion on the first side, the synchronization sequence and the portion on the second side are serially arranged with each other, has a processor. The processor is configured for storing the received signal, for detecting the synchronization sequence in the received signal, for calculating a transmission characteristic between the tag and the reader, using the portion of the received signal on the first side and for extracting a payload information from the portion of the received signal on the second side, using the calculated transmission characteristic.

Abstract: A method in a receiver includes receiving from a transmitter a signal including at least first and second frames that carry same data. First and second data symbols are identified in the respective first and second frames, wherein the first symbol has a same data value as the second data symbol. A frequency offset between the transmitter and the receiver is estimated based at least on the identified first and second data symbols. A frequency of the receiver is adjusted based on the estimated frequency offset.

Abstract: A method includes receiving a signal associated with one or more sensors. The method also includes examining one or more parameters of a signal conditioning circuit to determine whether clipping of the signal has occurred. The method further includes, upon a determination that clipping of the signal has occurred, decreasing a gain of the signal conditioning circuit. In addition, the method includes, upon a determination that clipping of the signal has not occurred, determining whether a cut-off frequency of the signal conditioning circuit is within a range of a frequency response of an object measured by the one or more sensors. The method can further include changing the cut-off frequency of the signal conditioning circuit and increasing a resistance or a capacitance of the signal conditioning circuit.

Abstract: A method, apparatus, and chipset are provided for constructing hybrid automatic repeat request (HARQ) rate-compatible polar codes for communication channels. The method includes constructing, in a terminal, a base polar code of length 2n; and determining a sequence of m<2n bits to puncture in the base polar code by testing a predetermined criterion at most (22n+2n)/2?1 times.

Abstract: An arrangement for detecting signaling data from bootstrap Orthogonal Frequency Division Multiplexed (OFDM) symbols in the frequency domain, which can provide a more accurate estimate of the signaling data than other arrangements that operate in the time domain. The arrangement includes detecting a cyclic shift of a signature sequence, which has been applied to represent the signaling data, as an average phase change between each of the sub-carriers of the bootstrap OFDM symbol. As a result the signaling data can be more accurately detected or detected at lower signal to noise ratio.

Abstract: A method is provided for individually processing multiple frequency bands in a composite RF signal is disclosed. The composite RF signal is separated into a plurality of gain controlled and bandlimited frequency bands. The gain controlled and bandlimited frequency bands are then recombined to produce a controlled composite RF signal, which is then digitized by undersampling with an ADC to produce a plurality of unambiguous frequency bands convolved around baseband. The sample frequency can be substantially less than the Nyquist Limit of twice the highest frequency present for digitization. Each baseband signal is monitored for amplitude spikes therein. In response to an amplitude spike, the appropriate frequency band is modified by a control signal to hold the ADC to within its dynamic range.

Abstract: Systems and methods for autonomous signal modulation format identification are disclosed. In an example embodiment of the disclosed technology, a method includes applying higher-order statistics to an input signal to identify the input signal's modulation format. The method may include applying higher-order statistics to the input signal to calculate higher-order cumulant values for the input signal as higher-order cumulants are indicative of a particular modulation format signature. The method may further include employing a decision tree to determine the modulation format of the input signal.

Abstract: A radio apparatus includes a first antenna that transmits and receives a radio signal, a second antenna that receives a radio signal, a plurality of filters that acquire signals with mutually different frequencies from a received signal that is received by the second antenna, an amplification unit that is arranged in front of the plurality of filters and amplifies the received signal, and a control unit that controls whether or not the received signal is amplified by the amplification unit depending on a condition of radio communication by the first antenna and the second antenna.

Abstract: A signal detecting method and device are disclosed. The method includes: obtaining a matched filtering signal; determining a filtering matrix; decomposing the filtering matrix to obtain a principal diagonal matrix and a non-principal diagonal matrix; obtaining a parameter matrix and a parameter vector according to the principal diagonal matrix, the non-principal diagonal matrix, and the matched filtering signal; obtaining an iterative parameter and an iterative initial value according to the parameter matrix and the parameter vector; and performing an iterative calculation according to the iterative parameter and the iterative initial value; if the number of iterations reaches a preset number, obtaining an iterative final value, and obtaining an input of a decoder according to the iterative final value. The signal detection method may reduce the computational complexity and bit error rate, improve data throughput, and more advantageous for use in a large-scale multi-input multi-output system.

Abstract: A digital data communications mechanism includes multiple parallel lines, in which components of one or more lines are temporarily powered down to save power. Preferably, both the transmitter and receiver contain respective generators generating identical pre-determined pseudo-random bit streams, which are initially synchronized and which remain powered up when the line is temporarily powered down. Upon re-powering the line, the transmitter transmits the locally generated bit stream, and the receiver compares the received bit stream with its internally generated bit stream to determine an amount of shift required for re-synchronization.

Abstract: A method in a user equipment node for providing interactive services to a user of the user equipment node, comprising the steps of receiving an interactivity media file comprising information which is to be presented to the user. An interactivity description fragment is also received, the interactivity description fragment comprising one or more command signals for controlling how the information received in the interactivity media file is to be presented to the user. The information received in the interactivity media file is presented to the user using the one or more command signals received in the interactivity description fragment.

Abstract: A touch sensitive device includes a touch interface having rows and columns, a signal generator for generating a plurality of unique orthogonal signals on at least a plurality of the rows, respectively, and a frequency converter. The frequency converter receives a first touch signal present on at least one of the plurality of columns, converts the first touch signal to a second signal having a second center frequency, and outputs the second signal. A touch processor is identifies touch on the touch interface by processing the second signal having the second center frequency and outputting touch event data.

Abstract: A digital signal up-converting apparatus includes: a clock generating circuit arranged to generate a reference clock signal; an adjusting circuit coupled to the clock generating circuit and arranged to generate a first clock signal and a second clock signal according to the reference clock signal; a baseband circuit coupled to the adjusting circuit for receiving the first clock signal, wherein the baseband circuit further generates a digital output signal according to the first clock signal; and a sampling circuit coupled to the adjusting circuit and the baseband circuit for receiving the second clock signal and the digital output signal, wherein the second clock signal and the digital output signal are non-overlapping; wherein the sampling circuit samples the digital output signal based on the second clock signal and then combines the sampled digital output signal in order to generate a combined digital signal.

Abstract: A communication system includes: an inter-device interface configured to receive received signal including communication content; a communication circuit, coupled to the inter-device interface, configured to: determine an in-phase signal-component and a quadrature signal-component based on the received signal, calculate an adjustment value including a first adjustment and a second adjustment based on the in-phase signal-component and the quadrature signal-component according to a maximum-likelihood mechanism, and adjust the received signal based on the adjustment value for reducing an in-phase/quadrature imbalance between the in-phase signal-component and the quadrature signal-component in processing the communication content.

Abstract: A video device having data lanes and a method of operating the video device includes generating performance monitoring and/or debug data in response to the operation of the video device. The generated data is sampled from component of the video device operating in various clocking domain. The data sampled from the components is combined into a unified stream which is independent of the various clocking domain. The unified stream is transmitted across one more data lanes of a video link along with corresponding audio and/or video data in real time.

Abstract: Samples of a light radar (“LIDAR”) return signal are stored in an analog circular buffer following the transmission of a LIDAR pulse. Sampling continues for a fixed period of time or number of samples during a post-trigger sampling period after the occurrence of a trigger signal from a trigger circuit. The trigger circuit indicates the receipt of a return pulse associated with a target object based upon one or more return signal characteristics. Following the post-trigger sampling period, the stored analog samples are sequentially read out and converted to digital sample values. The digital sample values may be analyzed in a digital processor to further confirm the validity of the returned LIDAR pulse, to determine a time of arrival of the LIDAR pulse, and to calculate a distance to the target object. Some versions include multiple circular buffers and capture clocks, enabling the capture of samples from multiple return pulses.

Abstract: Technology for selecting physical resource blocks (PRB) for cell-specific reference signal (CRS) transmission for a new carrier type (NCT) is disclosed. In an example, device operable in an evolved Node B (eNB) to select physical resource blocks (PRB) for cell-specific reference signal (CRS) transmission for a new carrier type (NCT) can include computer circuitry configured to: Determine a frequency bandwidth for the NCT; and select a CRS pattern of PRBs for a transmission of the CRS in the frequency bandwidth, wherein the frequency bandwidth includes PRBs with CRS and PRBs without CRS.

Abstract: By inserting a symbol start tag at a start of a data segment corresponding to each symbol of a multimedia data stream, and by inserting frame start tags at starts of different frames in a start data segment, data signals belonging to different channels can be precisely and rapidly classified and decoded when the multimedia data stream is performed with demodulation.

Abstract: A method and apparatus in which a Tap-Weight Computer (TWC) calculates a Tap-Weight Vector (TWV). The TWV is coupled to a register in each of a plurality of adaptive filter modules. Each such adaptive filter module includes several adaptive filters that each include a tapped delay line. The input to the tapped delay line of each such adaptive filter is one of a plurality of potential interfering signals. The TWV controls the weighting of the outputs from the taps off the delay line. The weighted outputs from each tapped delay line are then subtracted from a received signal which potentially includes interference from the potential interfering signals. The TWC is multiplexed to each of the plurality of adaptive filters so that each adaptive filter is loaded with a TWV calculated by the TWC to reduce the amount of interference contributed by a particular potential interfering signal coupled to an input to that particular adaptive filter.

Abstract: A method of detecting interference caused by inter-modulation in a network node site comprising a set of network nodes for wireless communication capable of communication with a set of stations for wireless communication. The stations are wireless transceiver devices and communication from the network node to any of the stations is considered to be downlink communication and communication from any of the stations is considered to be uplink communication.

Abstract: According to the present invention, a method for receiving a broadcast service comprises the steps of: selecting a non-real time service object; receiving service signaling data corresponding to the selected non-real time service object; determining a consumption model of the non-real time service object on the basis of the service signaling data; acquiring, if the consumption model is a predetermined consumption model, first content item reception information contained in the non-real time service object from the service signaling data; receiving a first content item on the basis of the first content item reception information; and executing the first content item in response to a request for execution from the selected non-real time service object.

Abstract: Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating a wireless transmission according to a Physical Layer scheme. For example, a wireless station may be configured to generate a frame including a header and a data portion, the header including a modulation and coding scheme (MCS) value of an Orthogonal Frequency Divisional Multiplexing (OFDM) Physical layer (PHY) scheme or a Low Power Single Carrier (LPSC) PHY scheme; modulate and encode the header according to a Single Carrier (SC) PHY scheme; modulate and encode the data portion according to the OFDM PHY scheme or the LPSC PHY scheme; and process transmission of the frame.

Abstract: There is provided an apparatus and a method for the receipt and processing of data signals carried in a plurality of predefined frequency bands and allowing a frequency band required at an instant of time to be selected from the predefined frequency bands from which data is to be retrieved. Passing the data signals from the wanted band to a transmitter and/or receiver including first and second mixing means to process the data signals, typically using in-phase and quadrative data feeds to create a predefined representation of the wanted frequency band, to provide an output for receipt by at least one broadcast data receiver and at least the transmitter and/or receiver is provided as part of an integrated circuit rather than as separate connected components.

Abstract: An apparatus and method for configuring a broadcast service data in a digital broadcasting communication system are provided. The method includes mapping a first zone, corresponding to broadcast service data of a first type, and a second zone, corresponding to broadcast service data of a second type, in a frame individually. Preferably, the broadcast service data included in the first zone and the second zone is sliced into sub-slices according to a different number of service slicings for each zone.

Abstract: A visible light communication system, and a method of modulating data and a method of feeding back performance information in the system, are provided. In the system, a transmitting unit modulates a plurality of data on a plurality of LED channels basis that are formed by a plurality of LEDs, respectively, and transmits the modulated data into a corresponding light signal. A receiving unit receives a light signal that is transmitted from the transmitting unit to demodulate the received light signal to a signal on a plurality of LED channels basis.