761 results about "Multi output" patented technology

Described are concepts, systems, system architectures, circuits, methods, and techniques directed toward power management and control. In particular, described are concepts, systems, system architectures, circuits, methods, and techniques for implementing power converters that may not have a right-hand pole zero in their linearized, averaged control-to-output transfer function, but that may still have buck and boost functionality.

A dual-polarized multiple-input-multiple-output (MIMO) mobile device is provided that includes a first array of antennas and a second array of antennas. Based upon a blockage of at least one of the array of antennas being less than a blockage threshold, the mobile device operates in a default configuration in which a default polarization selection from the second array is used in combination with a fixed polarization selection from the first array to form a first MIMO layer signal and a second MIMO layer signal. Should the blockage exceed the blockage threshold and an optional performance threshold be satisfied, the mobile device may operate in a dynamic configuration in which a dynamic polarization selection from the second array is reversed as compared to the default polarization selection.

A power-over-Ethernet (PoE) PD / PSE device comprises a powered device (PD) interface configured to connect to an upstream power sourcing equipment (PSE) and receive input PoE power from the PSE, and a PSE interface configured to connect to a downstream PD and to supply output PoE power to the PD. The PD / PSE also comprises a device power rail to supply operational power to one or more components of the PD / PSE, and a DC-DC converter comprising a multi-output transformer comprising a transformer input, a first transformer output electrically connected to the PSE interface, and a second transformer output electrically connected to the device power rail. The DC-DC converter is configured to receive the input PoE power and, in response, supply the input PoE power to the transformer input, generate the output PoE power at the first transformer output, and generate the operational power at the second transformer output.

Some demonstrative embodiments include apparatuses, systems and / or methods of communicating a Single-User (SU) Multiple-Input-Multiple-Output (MIMO) transmission. For example, a first wireless communication station may be configured to transmit a Request to Send (RTS) to a second wireless communication station via a plurality of SU MIMO Transmit (Tx) sectors of the first wireless communication station, the RTS to establish a Transmit Opportunity (TXOP) to transmit an SU-MIMO transmission to the second wireless communication station, a control trailer of the RTS including an indication of an intent to transmit the SU-MIMO transmission to the second wireless communication station; and to transmit the SU-MIMO transmission to the second wireless communication station, upon receipt of a Clear to Send (CTS) from the second wireless communication station indicating that the second wireless communication station is ready to receive the SU-MIMO transmission.

The invention discloses a low-power-consumption multiple-input-multiple-output thermo-optical switch chip which comprises N optical input ports, an N * N optical beam splitter, N spiral waveguide thermo-optical phase shifters, an N * N optical beam combiner and N optical output ports. The N * N light beam splitter and the N * N light beam combiner adopt the same design structure and comprise N single-mode input / output waveguides, N width gradient waveguide transition areas (taper areas) and a multi-mode waveguide area, and each single-mode input and output waveguide is connected to the multi-mode waveguide area through the width gradient waveguide transition area. The spiral waveguide thermo-optic phase shifter comprises two spiral waveguides with different sizes, an S bend with a gradually-changed width and a circular heating electrode. The transmission path of light in the chip can be changed by adjusting the spiral waveguide thermo-optical phase shifter, and the function of optical switch switching is achieved. The invention has the advantages of high integration level, high expandability and low power consumption, and can be used in the field of integrated photon chips.

Disclosed are systems, apparatuses, processes, and computer-readable media for wireless communications. For example, an example of a process may include receiving, at a network device (e.g., a user equipment (UE)) from a network entity via a number of sensing streams based on a maximum of Nt−J sensing streams, a waveform including communications resources and sensing resources. The waveform has a rank Nt and J is a number of layers scheduled for multiple-input multiple-output (MIMO) communications that is less than Nt. The process may further include processing at least the communications resources of the waveform.

A DC-DC conversion apparatus for a charging pile includes a group of power terminals, a plurality of groups of load terminals, and a plurality of isolated DC-DC conversion circuits. An input end of each isolated DC-DC conversion circuit is connected to the group of power terminals, and output ends of the plurality of isolated DC-DC conversion circuits are connected to the plurality of groups of load terminals in a one-to-one correspondence, so that the DC-DC conversion apparatus for a charging pile forms an architecture with a single input and a plurality of independent outputs. In this way, the DC-DC for a charging pile can have high power utilization while implementing wide-range power outputs.

Apparatuses, systems, and techniques to detect uplink data in a multi-user multiple input multiple output wireless communication system. In at least one embodiment, uplink data is detected using one or more graphics processing units to perform parallel computations in order to form a consensus belief about information received by one or more base stations in a wireless network.

Technologies for providing energy efficiency technology in extreme mMIMO systems in a cellular network cellular network (e.g., 5G wireless network, 6G wireless network) are described. The method collects data representing conditions for potential energy saving (ES) modes, comprising morphology data and traffic pattern data. The method determines, using the collected data, one or more energy saving (ES) modes for one or more components of a cellular network in at least one of a time (T) domain, a frequency (F) domain, or a space (S) domain, wherein the one or more ES modes cause at least one adjustment to the one or more components in the at least one of the time (T) domain, the frequency (F) domain, or the space (S) domain.

The invention discloses a multi-output switching power supply and a control method thereof, the multi-output switching power supply comprises a power conversion circuit and a plurality of output control switch tubes, the plurality of output control switch tubes are connected to the output end of the power conversion circuit, the power conversion circuit converts an input voltage into a first output voltage, and the first output voltage is connected to the output end of the power conversion circuit. A plurality of output control switch tubes adjust the first output voltage into a plurality of voltage outputs; and controlling the switching state of a main switching tube in the power conversion circuit according to the output feedback signal of one path of the multiplexed output as a first feedback signal, and controlling the switching states of a plurality of output control switching tubes according to the output feedback signals of other paths of the multiplexed output. According to the multi-output control scheme, a two-stage power conversion circuit is not needed, the cost is low, the control is simple, and the system efficiency is greatly improved.

A multi-output Gaussian process regression underwater vehicle system identification algorithm based on a depth part auto-encoder comprises the following steps: designing an amplitude-adjustable zigzag vertical rudder input signal, obtaining state data of an underwater vehicle, and dividing the state data into a training set and a verification set; constructing an autoregression model based on underwater vehicle dynamics according to the state data; building a depth part auto-encoder according to the auto-regression model; low-dimensional feature data extracted by the depth part auto-encoder is used as input of a multi-output Gaussian process, output of the auto-regression model is used as output of the multi-output Gaussian process, hyper-parameters of the multi-output Gaussian process are searched through a particle swarm algorithm, and model training is carried out; when a model training error reaches preset precision, completing model training, and verifying the model by adopting verification set data; the problems that high-dimensional input of the multi-output Gaussian process can increase calculation of a kernel function and search time of hyper-parameters, the complexity of a model is increased, and prediction efficiency of the multi-output Gaussian process is reduced are solved.

The invention belongs to the technical field of power electronics, and discloses a high-performance multi-output driving power supply and a low-coupling capacitance multi-channel transformer, the low-coupling capacitance multi-channel transformer comprises a pair of magnetic cores, a group of primary windings and N groups of secondary windings, and N is greater than 2; wherein one magnetic core comprises a primary side magnetic column and N secondary side magnetic columns, and the N secondary side magnetic columns evenly surround the circumference with the primary side magnetic column as the circle center; the primary winding is wound on the primary magnetic column, and the N groups of secondary windings are respectively wound on the corresponding secondary magnetic columns; therefore, the coupling capacitance of the primary side and the secondary side is effectively reduced so as to limit the common-mode current excited by the high-speed action of the switching device; based on the multi-output transformer, the invention also provides a high-performance multi-output driving power supply, and a post-stage voltage regulating circuit is configured in the driving power supply, so that the cross regulation rate of multi-output is effectively reduced, and the working consistency and stability of a switching device in a power module are ensured.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may communicate with a second network node using a line-of-sight (LOS) multiple input multiple output (MIMO) configuration at a frequency. The first network node may communicate, based at least in part on a multi-user MIMO (MU MIMO) mode, with a third network node using the LOS MIMO configuration and at the frequency, wherein the MU MIMO mode corresponds to an antenna system configuration of the rectangular antenna array, wherein the antenna system configuration includes at least one of an antenna assignment scheme, an antenna amplitude configuration, or an antenna phase configuration. Numerous other aspects are described.

Some demonstrative embodiments include apparatuses, systems and / or methods of communicating a Single-User (SU) Multiple-Input-Multiple-Output (MIMO) transmission. For example, a first wireless communication station may be configured to transmit a Request to Send (RTS) to a second wireless communication station via a plurality of SU MIMO Transmit (Tx) sectors of the first wireless communication station, the RTS to establish a Transmit Opportunity (TXOP) to transmit an SU-MIMO transmission to the second wireless communication station, a control trailer of the RTS including an indication of an intent to transmit the SU-MIMO transmission to the second wireless communication station; and to transmit the SU-MIMO transmission to the second wireless communication station, upon receipt of a Clear to Send (CTS) from the second wireless communication station indicating that the second wireless communication station is ready to receive the SU-MIMO transmission.

Systems, apparatus, processes, and computer-readable media for wireless communication are disclosed. For example, an example of a process may include receiving, at a network device (e.g., a user equipment (UE)), a waveform including a communication resource and a sensing resource from a network entity via a number of sensing flows based on a maximum of Nt-J sensing flows. The waveform has a rank Nt, and J is a number of layers scheduled for multiple-input multiple-output (MIMO) communication, the number being less than Nt. The process may further include processing at least the communication resource of the waveform.

Method and apparatus for supporting simultaneous MultiUser (MU) Multiple-Input Multiple-Output (MIMO) operations utilizing Orthogonal Frequency Division Multiple Access (OFDMA) with Uplink OFDMA Random Access (UORA). Access Points (APs) trigger and obtain short PPDUs from the stations to learn spatial filtering patterns that are utilized in adjusting antenna phase differences to obtain minimum / maximum energy from this BSR. The APs determine favored and unfavored directions of communication, which are conveyed to non-AP UORA stations as channel estimation signals. The UORA stations base broadcasting on strengths of channel estimation signals to determine eligible UORA resource units. The UORA procedure to secondary APs allows a primary AP to trigger a UL-MU MIMO transmission with the number of spatial streams exceeding the number of antennas at the primary AP.

An apparatus and a method to apply 5G communication systems to IoT networks is provided. The apparatus includes technologies, such as a sensor network, machine type communication (MTC), and machine-to-machine (M2M) communication may be implemented by beamforming, multiple-input multiple-output (MIMO), and array antennas. Application of a cloud radio access network (RAN) as the above-described big data processing technology may also be considered to be as an example of convergence between the 5G technology and the IoT technology. The disclosure relates to a method and an apparatus for controlling network access in a next generation mobile communication system.

A system and method for enabling downlink signal transmission in a Multiple-Input Multiple-Output (MU-MIMO) system is provided. The method comprises of creating a scheduling information based on MU-MIMO Scheduling of a plurality of User equipments (UES), multiplexing the plurality of UES paired based on the scheduling decisions across time, frequency and code, inputting transport blocks of each UE pushed on to a Downlink shared channel (DLSCH), performing bit processing of each of the CRC encoded UEs, inputting Code-rate (MCS) for data modulation mapping on a post bit processed data, assigning DM-RS ports to the UE based on allocated MCS and number of antenna ports from a scheduling information structure, adding, a Partial Port Occupancy information (P-Poi) for each UE along with the scheduler information structure required for demodulation at UE and enabling optimal channel estimation at UE by adding new DM-RS port combinations using reserved fields in the DCI messaging.

Described herein is a DC-DC voltage regulator for converting an input voltage at an input port into one or more output voltages at respective output ports. In particular, the voltage regulator may comprise a first switching element, an inductive element, and a second switching element coupled in series between the input port and a reference voltage port; at least one negative output rail coupled between a first intermediate node and a respective output port, wherein the first intermediate node is arranged between the first switching element and the inductive element; a capacitive element coupled between a second intermediate node and a third intermediate node, wherein the second intermediate node is arranged between the inductive element and the second switching element; a third switching element coupled between the input port and the third intermediate node; at least one positive output rail coupled between the third intermediate node and a respective output port; a fourth switching element coupled between the third intermediate node and the reference voltage port; and a fifth switching element coupled between the first intermediate node and the reference voltage port.

For example, an apparatus may include a baseband controller configured to control a plurality of dual-polarization Radio Heads (RHs) to communicate a Multiple-Input-Multiple-Output (MIMO) transmission, the baseband controller configured to control a first dual-polarization RH of the plurality of dual-polarization RHs to communicate a first spatial stream of the MIMO transmission with a horizontal-polarization via one or more first dual-polarization antenna elements of the first dual-polarization RH, and to control a second dual-polarization RH of the plurality of dual-polarization RHs to communicate a second spatial stream of the MIMO transmission with a vertical-polarization via one or more second dual-polarization antenna elements of the second dual-polarization RH.

Aspects presented herein may enable a base station to perform demodulation reference signal (DMRS)-based channel sounding for a channel between the base station and a UE, such that the base station may configure a more suitable precoding for coherent UL multiple input multiple output (MIMO) transmission(s) of the UE without increasing communication overhead significantly or at all. In one aspect, a base station performs channel sounding for a channel based on a set of physical uplink shared channel (PUSCH) DMRS received from a UE via the channel. The base station selects a precoding to be used by the UE for a subsequent PUSCH transmission via the channel based on the channel sounding. The base station transmits, for the UE via a physical downlink control channel (PDCCH), a transmit precoder matrix indicator (TPMI) indicating the selected precoding, where the PDCCH schedules the subsequent PUSCH transmission for the UE.

The invention relates to the technical field of radars, and provides a frequency diversity array multi-input multi-output radar target detection system. The system comprises a detection statistic construction module, a detection optimization module, a detection threshold determination module and a target judgment module. Wherein the detection statistic construction module is used for constructing a detection statistic; according to the detection statistics, constructing a semi-definite programming optimization model; the detection optimization module is used for constructing a semi-definite programming optimization model according to the detection statistics; the detection optimization module is also used for solving the optimization model to obtain an optimal value of the detection statistics; and the target judgment module is used for comparing the detection statistic optimal value with a detection threshold so as to detect whether a target exists or not, so that the target detection probability and the anti-interference capability of the frequency diversity array multi-input multi-output radar in a complex environment are improved.

The invention provides a multiple-input-multiple-output soft measurement method and device and a medium. The method comprises the steps that historical multi-sampling-rate process variable data and historical multi-quality variable data are acquired; obtaining a plurality of historical task specific features from the historical multi-sampling-rate process variable data; inputting the plurality of historical task specific features to obtain historical cross-task sharing interaction features; training according to the historical cross-task sharing interaction features, the plurality of historical task specific features and historical multi-quality variable data to obtain a trained feature interaction hybrid expert network model; and obtaining a plurality of online prediction results according to the trained feature interaction hybrid expert network model. According to the method, the device and the medium, the problems that information loss, time alignment errors and task negative migration are easily caused when different variable sampling frequencies are inconsistent in an existing multi-input multi-output soft measurement method, an irregular sampling phenomenon exists, and the prediction precision of multiple quality indexes is not high can be solved.

A dual-polarized multiple-input-multiple-output (MIMO) mobile device is provided that includes a first array of antennas and a second array of antennas. Based upon a blockage of at least one of the array of antennas being less than a blockage threshold, the mobile device operates in a default configuration in which a default polarization selection from the second array is used in combination with a fixed polarization selection from the first array to form a first MIMO layer signal and a second MIMO layer signal. Should the blockage exceed the blockage threshold and an optional performance threshold be satisfied, the mobile device may operate in a dynamic configuration in which a dynamic polarization selection from the second array is reversed as compared to the default polarization selection.

The invention discloses a random pre-coding multiple-input multiple-output orthogonal frequency division multiplexing wireless communication method and system, a transmitting end enables each symbol to fully utilize all sub-channels through random unitary transformation and random compression transformation, and at a receiving end, by means of a block diagonal channel matrix of MIMO-OFDM on a frequency domain, all sub-channels of the MIMO-OFDM are fully utilized, so that the random pre-coding multiple-input multiple-output orthogonal frequency division multiplexing wireless communication is realized. A cross-domain orthogonal approximate information transfer (CD-OAMP) detector is designed, which can perform signal detection with extremely low complexity, and can be optimal for replica maximum posteriori (MAP). The RP-MIMO-OFDM performance of the CD-OAMP detector exceeds the performance of MIMO-OFDM, the performance of MIMO-OTFS and the performance of MIMO-AFDM, the performance of RP-MIMO-OFDM is close to the performance of MIMO-IFDM, and the complexity is lower.

A network entity can be in a communications network that includes a plurality of network nodes communicatively coupled to the network entity via a cascaded topology. The network entity can transmit scheduling information to a first network node of the plurality of network nodes. The network entity can further receive an indication of an intermediate beamforming weight from the first network node. The network entity can further determine a part of a frequency-domain beamforming weight based on the indication of the intermediate beamforming weight. The network entity can further transmit an indication of the part of the frequency-domain beamforming weight to the first network node. The network entity can further communicate data with the communication device via the first network node.

The utility model discloses a vector signal comprehensive test module, which consists of an internal reference clock and a VCO (Voltage Controlled Oscillator), and the reference clock has an internal and external switching function. The VCO adopts a multi-output phase adjustable device and provides local oscillation signals for the two RFICs and the six frequency conversion circuits respectively. The two RFICs are connected in parallel, and an external coherent local oscillator is provided by the VOC, so that the coherence of the two RFICs is realized. The microwave frequency conversion circuit realizes the frequency expansion function of the RFIC, expands two-path emission frequency and four-path reception frequency from tens of MHz to 9KHz, has four radio frequency test functions of vector signal generation, vector signal analysis, vector network analysis and vector transceiver, and realizes the multifunctional and multi-scene application capability of the comprehensive test instrument.

Described are circuits and techniques to increase the efficiency of radio-frequency (rf) amplifiers including rf power amplifiers (PAs) through “supply modulation” (also referred to as “drain modulation” or “collector modulation”), in which supply voltages provided to rf amplifiers is adjusted dynamically (“modulated”) over time depending upon the rf signal being synthesized. For the largest efficiency improvements, a supply voltage can be adjusted among discrete voltage levels or continuously on a short time scale. The supply voltages (or voltage levels) provided to an rf amplifier may also be adapted to accommodate longer-term changes in desired rf envelope such as associated with adapting transmitter output strength to minimize errors in data transfer, for rf “traffic” variations.

An antenna includes M radiators and M feeding elements. The M radiators can be used to wirelessly access a set of first signals. The M feeding elements can be formed below the M radiators, connected to a processing circuit, and used to access a set of second signals corresponding to the set of first signals between the M feeding elements and the processing circuit. M can be a positive integer larger than 3.

A method for performing multiple-input and multiple-output channel estimation includes: generating, using a first machine-learning model, an initial set of estimated channel information from a first input set of channel information, wherein the first input set of channel information corresponds to a first plurality of radio-frequency chains, and wherein the estimated set of channel information corresponds to the first plurality of radio-frequency chains and a second plurality of radio-frequency chains; generating, using a second machine-learning model, a set of estimated channel phases from the initial set of estimated channel information and a second input set of channel information, wherein the second set of input channel information corresponds to the second plurality of radio-frequency chains; and combining the initial set of estimated channel information and the set of estimated channel phases to generate an enhanced set of estimated channel information.