33results about "Multiplex communication" patented technology

To provide an access point device, a station device, and a communication method that achieve highly accurate beamforming in a high frequency band.SOLUTION: A first sub-access point device 20000-2 and a second sub-access point device 20000-3 are access point devices that communicate with a station device using a first link 11-10 and a second link 11-11, and include a transmitting unit that transmits a first frame 11-1 through the first link and a receiving unit that receives a response frame 11-2 through the second link. The first frame is a frame that requests the response frame, and the receiving unit performs carrier sense to secure a wireless medium in the second link before the transmitting unit finishes transmitting the first frame through the first link.SELECTED DRAWING: Figure 11

The information expression capability of radio waves is increased by using information expression based on an orthogonal basis with a high degree of freedom that allows for a large number of combinations. [Solution] The system includes a radio wave signal acquisition unit (11) that acquires the complex signal of the received electric field for each element of the array antenna as a received radio wave signal, an orthogonal basis expansion unit (12) that calculates two or more orthogonal basis components from the received radio wave signal, a reference structure acquisition unit (13) that acquires reference structure information used for modulation by the geometric structure of the radio waves, and a restructuring calculation unit (14) that uses the orthogonal basis components and the reference structure information to calculate the elevation angle, azimuth angle, and radius on a sphere (20) with the first orthogonal basis and the second orthogonal basis as poles to represent the geometric structure of the radio waves as a restructured geometric structure, and the orthogonal basis components include orbital angular momentum components.

The invention relates to a field device for process automation. A control unit (4) for transmitting electrical signals between an electronic unit (3) and an antenna connection (2) has a switch (40) with signal interfaces (J1, J2, J3), exactly one antenna signal interface (410), and a control interface (V1, V2). Depending on the activation of the control interface (V1, V2), the signal interfaces (J1, J2, J3) are connected to the antenna signal interface (410).

METHOD FOR SECURE SELF-ADDRESSING OF SLAVE DEVICES IN A LIN NETWORK The present invention relates to a method for configuring at least one slave device by a master device on a multiplexed LIN communication network, comprising the steps: a) sending a configuration instruction from the master device to the slave device; notable in that the method further comprises the step: b) sending a configuration acceptance signal from the slave device to the master device; c) if step b fails, iteration of steps a) and b) until the first of the following two conditions is met: reaching a maximum number of iterations and completion of step b). (Figure to be published with the abbreviation: Figure 2)

The invention relates to the technical field of wireless communication, in particular to a wireless audio transmission method, device, system and equipment and a storage medium. In the invention, through flexible link coexistence (frequency division / time division multiplexing) and a dynamic enabling control mechanism, intelligent distribution and optimization of transmission resources of the first peripheral equipment and the second peripheral equipment in the connection isochronous flow link group are realized. According to the invention, the system can adaptively select the multiplexing mode according to the actual transmission demand and the channel condition, and combines the repeated transmission strategy, thereby effectively improving the reliability of wireless audio transmission, reducing the time delay, and better adapting to the dynamic change of the wireless channel, thereby remarkably optimizing the overall performance of the dual-device or multi-device cooperative audio transmission.

Aspects of the present disclosure relate to a formula-based inter-circle precoding weight determination for an orbital angular momentum (OAM) communication system. Some aspects of the present disclosure relate to an apparatus and method for wireless communication, the apparatus including a processor, an antenna element including a first subset and a second subset of the antenna elements, and a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the processor to transmit a first reference signal using a first OAM mode via the first subset of the antenna elements, transmit a second reference signal using the first OAM mode via the second subset of the antenna elements, and receive information indicating a subset of antenna elements of the plurality of antenna elements to use to transmit the first OAM mode. Other aspects, embodiments, and features are also claimed and described.

The objective is to provide an OAM radio wave transmission and reception system without increasing the size of the equipment by acquiring OAM radio wave information through localized measurement of OAM radio waves. [Solution] A radio wave generating device comprising a control unit and a radio wave transmitting unit, wherein the control unit includes an OAM radio wave information setting unit that generates a transmitted radio wave signal based on the OAM mode order, a phase change unit that linearly changes the phase of the transmitted radio wave signal with respect to time according to the OAM mode order, and a complex signal generating unit that generates a complex signal from the transmitted radio wave signal whose phase has been changed by the phase change unit and a reference signal, and the radio wave transmitting unit includes a complex signal conversion unit that decomposes the signal components of the complex signal into a real part and an imaginary part, a radio processing unit that generates a radio signal from the complex signal decomposed into a real part and an imaginary part, and an array antenna that transmits the radio signal as an OAM radio wave.

This provides MIMO signal estimation and filter coefficient optimization. [Means] The system comprises D multi-input single-output (MISO) filters and D interference rejection filters. The multiple received signal sequences are the first D received signal sequences. Each of the ith (i is an integer between 1 and D) MISO filters in the D MISO filters receives the ith D received signal sequences as input and estimates the ith single transmitted signal sequence in the D transmitted signal sequences. Each of the ith interference rejection filters in the D interference rejection filters receives a signal obtained by transforming the ith single estimated transmitted signal sequence, which is the estimated result of the ith single transmitted signal sequence, through phase correction and noise correction processing, along with the ith D received signal sequences as input. The filter removes interference signals contained in the ith D received signal sequences and outputs the i+1th D received signal sequences, estimating D transmitted signal sequences including the ith single transmitted signal sequence.

A method may use hybrid-TDMA / FDMA frames to synchronize participating nodes to an orchestrator node of a virtual antenna array as the virtual antenna array transmits to a target node. The virtual antenna array is formed by the orchestrator node and the participating nodes. The orchestrator node synchronizes the participating nodes periodically using the hybrid-TDMA / FDMA frames. The virtual antenna array directs joint communications toward and receives communication from the target node. The communication from the target node may be used to learn channel state information (CSI) between the virtual antenna array and the target node. The nodes may include software-defined radios which execute the hybrid-TDMA / FDMA frames. The hybrid-TDMA / FDMA frames may include concurrent transmissions of signal data and metadata. The hybrid-TDMA / FDMA frames may decouple the duty-cycle from the number of nodes.

This transmission device comprises: a signal generation unit for generating signals in -n-th order (n is an integer of 1 or greater) to 0-th order orbital angular momentum modes; a signal transmission unit for transmitting a multiplexed signal obtained by multiplexing the signals in the -n-th order to 0-th order orbital angular momentum modes generated by the signal generation unit; and a phase control unit for performing phase control for increasing, by a prescribed amount, all the orders of the orbital angular momentum mode signals multiplexed into the multiplexed signal transmitted by the signal transmission unit.

A communication method and apparatus are provided. In the communication method, a second communication apparatus may indicate a first set of frequency units and a first frequency interval by using first information. The first communication apparatus may determine a second set of frequency units based on the first set of frequency units and the first frequency interval. The first set of frequency units and the second set of frequency units are frequency units used to transmit a first type of signal in different types of time units.

To provide a radio signal processing system and a radio signal processing method which implement iterative MUD capable of shortening a computation time.SOLUTION: A radio signal processing system comprises: error calculation means for generating two or more patterns of estimated signals for which a waveform is estimated for each of transmitted signals transmitted from two or more second communication stations and for respectively calculating an estimation error based on a difference between the received signals and a sum of the estimated signals included in the respective generated patterns; selection means for selecting two or more patterns of the estimation signals based on the respective estimation errors calculated by the error calculation means; probability calculation means for calculating a probability distribution indicating a distribution of probabilities that the estimated signals are the transmission signals based on the estimation errors with respect to the two or more patterns selected by the selection means; and estimation means for estimating information included in the transmission signals based on the probability distribution calculated by the probability calculation means.SELECTED DRAWING: Figure 1

To enable a base station to transmit information indicating transmission power to each of a plurality of terminals.SOLUTION: There is provided a base station provided with a control device and a radio device. The radio device receives reference signals from each of a plurality of terminals. The control device estimates reception quality of transmission from the terminals based on the reference signals for each of the plurality of terminals. The control device determines transmission power for the terminals to transmit uplink signals based on the estimated reception quality for each of the plurality of terminals. The radio device transmits information indicating the determined transmission power to each of the plurality of terminals.SELECTED DRAWING: Figure 1

To prompt a user to take more appropriate measures when deterioration in reception quality is detected.SOLUTION: A broadcast receiving unit measures a first reception quality that is a reception quality of a data signal to be broadcast, and a second reception quality that is a reception quality of a signal other than the data signal, and when a quality difference which is a difference between the first reception quality and the second reception quality is larger than a predetermined quality difference threshold after a certain point in time, a control unit outputs notification information indicating the possibility of reception quality deterioration due to hierarchical division multiplexing of the data signal to a notification unit.SELECTED DRAWING: Figure 1

To provide a method enabling the increase of transmission capacity when implemented in combination with existing services.SOLUTION: A transmitting device is provided, comprising : bit interleaving portions 5231 and 3231 which generate a first bit sequence of a first data stream and a second bit sequence of a second data stream by performing bit interleaving, respectively; a mapping portion 5241 which generates a first modulation symbol sequence by mapping the first bit sequence; a mapping portion 3241 which generates a second modulation symbol sequence by mapping the second bit sequence; an addition portion 3261 which generates a multiplexed signal by superimposing the first and second modulation symbol sequences; and a TMCC / AC signal generation portion 5091 which generates a control signal from control information indicating a multiplexing method.SELECTED DRAWING: Figure 1

The present technology relates to a transmission device and a transmission method, and a reception device and a reception method that enable more efficient multiplexing of signals. A communication device performs control to multiplex and transmit a plurality of chirp signals generated by performing chirp modulation on transmission data and shifting a transmission frequency between the center frequencies of adjacent transmission channels. The present technology can be applied to wireless communication systems.

Downlink Synchronization Method of User Equipment to a 5G Cellular Network and Associated User Equipment. The downlink synchronization method (100) of user equipment to a 5G cellular network comprises: - a receiving step (105); - a first frequency-time synchronization step (110), comprising first estimates of a frequency gap (DF1) and a time gap (DT1) between the transmitted and received signals (S) and a determination of a first component (N_PSS) of the cell number (N_cell) by autocorrelation and cross-correlation; and - a second frequency-time synchronization step (120), comprising second estimates of the frequency gap (DF2) and the time gap (DT2) by autocorrelation and cross-correlation, taking into account the first component (N_PSS). The second estimates are more accurate than the first estimates. Figure for the abstract: Figure 3

To provide a technique for more suitably transmitting or receiving an advanced digital broadcasting service.SOLUTION: A method includes a transmission step of transmitting a first transmission wave in a first polarization direction and transmitting a second transmission wave in a second polarization direction different from the first polarization direction, a reception step of receiving the first transmission wave and the second transmission wave, and a layer identification step of identifying the layers included in the first transmission wave and the second transmission wave. In each of the first transmission wave and the second transmission wave, a predetermined bandwidth is divided into a predetermined number of segments, and in the layer identification step, a segment group having the same segment number as the segment belonging to the predetermined layer transmitted by the first transmission wave in the first polarization direction from among the segments transmitted by the second transmission wave in the second polarization direction is configured such that identification information that can be identified as a layer different from the predetermined layer is stored in the second transmission wave.SELECTED DRAWING: Figure 2A

A method is provided in one example embodiment and includes creating a segment organization, which includes a configuration profile. The method also includes attaching the configuration profile to a server in the segment organization. The method further includes sending the attached configuration profile to a database in a physical network.

Methods, systems, and devices for multiple transmission schemes in wireless communication are described. In one aspect, a wireless communication method is disclosed to include: transmitting, by a first communication device, at least one of i) a repetition mode of data transmissions to be sent to a second communication device, ii) a mapping between N indicated beams and all scheduled transmissions of the data, or iii) a RV (Redundant Version) relationship among the all scheduled transmissions of the data, wherein the transmitting is based on at least one of the N indicated beam (s), a DMRS (Demodulation Reference Signals) port indication, or K time domain occasions, N and K being non-negative integers.

A master station that transmits and receives data to and from a control part, and a plurality of remote stations that transmit and receive data to and from the master station by a transmission synchronization method via a common transmission line are comprised. A frame repeatedly transmitted from the master station is time divided. Control and monitoring data range wherein the transmission direction of the data is determined and allocated to each of the remote stations, and management data range for use in data transfer with all of the remote stations are provide. Numerical value as an address for obtaining the timing of the data range allocated to the own station in the control and monitoring data range is set for each of the remote stations. The master station transmits a comparison identifier using the management data range at timing when a process for recognizing the address is executed. The remote station enables data transfer using the control and monitoring data range when receiving the comparison identifier, stores the comparison identifier, and when the operation identifier is transmitted from the master station, enables or disables data transfer using the control and monitoring data range basing on a result of comparison between the operation identifier and the comparison identifier

An apparatus and method for generating broadcast signal frames are disclosed. An apparatus for generating broadcast signal frames according to an embodiment of the present invention includes: a combiner configured to generate a multiplexed signal by combining core layer signals and enhancement layer signals; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving applied to both the core layer signal and the enhancement layer signal; and a frame builder configured to generate a broadcast signal frame, wherein the broadcast signal frame includes a preamble for signaling time interleaver information corresponding to the time interleaver, wherein the preamble includes a field indicating the start position of the first complete FEC block corresponding to each physical layer channel in the physical layer channels.

A radio-controlled, two-way acoustic modem for operating with a distributed fiber optic sensing (DFOS) system including circuitry that receives radio signals including configuration information, configures the modem to operate according to the configuration information, and generate acoustic signals that are detected by the DFOS system. The acoustic modem includes one or more sensors that detect environmental information that is encoded in the acoustic signals for further reception by the DFOS system. The received configuration information may change the operating times, sensors or other operating aspects of the modem as desired and such information may be transmitted from a fixed location or a mobile vehicle.

The present invention provides a transmission device comprising: a plurality of frequency conversion circuits that convert analog signals obtained by modulating a plurality of baseband signals each having a bandwidth based on a baseband signal processing capability such that the analog signals include radio-frequency bands different from each other; and an OAM signal generation circuit that generates OAM signals by assigning the analog signals having been converted to include the radio-frequency bands different from each other, to different OAM modes, respectively.

This application provides a data processing method, applied to the optical communication field. The data processing method includes the following steps: A sending device obtains a first 66-bit code block stream of a MAC frame. The sending device obtains a first check field based on the first 66-bit code block stream, the first check field is used to check the first 66-bit code block stream. The sending device obtains a second 66-bit code block stream based on the first 66-bit code block stream and the first check field, or adds the first check field to a 66-bit code block following the first 66-bit code block stream. The sending device maps the second 66-bit code block stream to a payload area of a data frame, or maps the first 66-bit code block stream and the following 66-bit code block to the payload area of the data frame. The sending device sends the data frame. In the technical solutions provided in this application, a receiving device can identify, by using the first check field, whether a bit error occurs in the 66-bit code block stream, so that communication reliability is improved.

A transmitter encodes incoming messages from users; splits each encoded message into a common (combinable) part and a private (not combined) part having a number of elements (e.g., bits or symbols) ba

A signal that is transmitted to a terminal apparatus itself is demodulated with high precision, and throughput is improved. A terminal apparatus that communicates with a base station apparatus includes: a reception unit that receives downlink control information from the base station apparatus; and a signal detection unit that demodulates a signal that is transmitted to the terminal apparatus itself, based on first modulation mapping, and demodulates an interference signal based on second modulation mapping, in a case where information relating to a transmit power of the interference signal is included in the downlink control information. A base station apparatus that communicates with a terminal apparatus includes: a transmission unit that transmits a transmit signal at a different transmit power to each of a plurality of terminal apparatuses, in a case where the plurality of terminal apparatuses are multiplexed with the same resource, and a modulation unit that performs modulation using first modulation mapping for a terminal apparatus that has a minimum transmit power, and performs the modulation using second modulation mapping for other terminal apparatuses.