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50 results about "Effective transmission rate" patented technology
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In telecommunications, effective transmission rate (average rate of transmission, effective speed of transmission) is the rate at which information is processed by a transmission facility.
Roundtrip delay time measurement apparatus and method for variable bit rate multimedia data
InactiveUS7496040B2Transmission systemsFrequency-division multiplex detailsComputer hardwareVideo encoding
An apparatus for measuring a roundtrip delay time associated with communication of multimedia data is provided. In one embodiment, the apparatus comprises a video encoder for encoding multimedia data to produce encoded multimedia data; a transmission rate controller for controlling transmission rate of the encoded multimedia data according to an effective transmission rate; and a first sending / receiving unit for sending the multimedia data via a first channel.
Owner:LG ELECTRONICS INC
Method of performing communication over wireless network including multiple input/multiple output stations
InactiveUS20050111419A1Maximum transmission efficiencyMaximum efficiencyTime-division multiplexRadio/inductive link selection arrangementsMimo transmissionBeacon frame
A method for increasing transmission efficiency between stations by representing and using a new media access control (MAC) frame format for a management frame of the 802.11a standard in wireless network communication. The method including securing transmission media through a predetermined channel securing procedure at one or more Multiple Input / Multiple Output (MIMO) transmission stations, and constructing information associated with a basic service set (BSS) and a MIMO Supported Rate and carrying the information associated with the BSS and MIMO Supported Rate on the management frame at the MIMO transmission station and transmitting the carried information to at least one reception-sided station by means of the transmission media. In an IBSS network including the stations having different transmission capability, the MIMO Supported Rate information element consisting of the data transfer rate set which the MIMO stations can support is carried and transmitted on a Beacon frame, so that selection of the maximum or efficient transfer rate is guaranteed in the communication between the high-speed stations.
Owner:SAMSUNG ELECTRONICS CO LTD
System and method for reducing power consumption for wireless communications by mobile devices
InactiveUS7096034B2Maximize system capacityReduce transmit powerPower managementEnergy efficient ICTSignal qualitySystem capacity
A power control scheme for a wireless network communication system that includes a base station and multiple wireless mobile device dynamically adjusts transmission power of a mobile device in conjunction with adjusting its bit allocation in source coding and channel coding to minimize its total power consumption while maximizing the system capacity in terms of the total effective transmission rates received by the base station. The base station sets a target signal quality value for each mobile station, and the target values are determined by the base station such that the total effective data rate from all the mobile devices is maximized under constraints of the total received power and the error protection level requirements for the mobile devices. The base station periodically measures a signal quality value, such as a signal-to-interference ratio (SIR), from transmissions received by the base from each mobile device, compares it with the measured signal quality value for that mobile device, and sends a control signal instructing the mobile device to increase or decrease its transmission power based on the result of the comparison. When the mobile device receives the control signal, it determines an amount of adjustment to its transmission power by performing a minimum calculation under constraints on the total data distortion and the maximum transmission rate to adjust the parameters for source coding, channel coding, and transmission under the constraints to result in a redistribution of power between the components that provides the minimized total power consumption.
Owner:MICROSOFT TECH LICENSING LLC
Roundtrip delay time measurement apparatus and method for variable bit rate multimedia data
InactiveUS20060018266A1Effective transmission rateFrequency-division multiplex detailsTransmission systemsVideo encodingDelayed time
An apparatus for measuring a roundtrip delay time associated with communication of multimedia data is provided. In one embodiment, the apparatus comprises a video encoder for encoding multimedia data to produce encoded multimedia data; a transmission rate controller for controlling transmission rate of the encoded multimedia data according to an effective transmission rate; and a first sending / receiving unit for sending the multimedia data via a first channel.
Owner:LG ELECTRONICS INC
Display panel and display device
ActiveCN108807487AHigh light transmittanceHigh precisionSolid-state devicesSemiconductor devicesOrganic filmScattering function
An embodiment of the invention provides a display panel and a display device. The absorption and scattering functions of an organic film layer in the light ray propagation process are reduced throughthinning treatment of a partial area of the thicker organic film layer of the display panel, the effective transmission rate on the display panel is increased, and loss and crosstalk of light ray signals after light rays pass by an organic film in the fingerprint recognition process are reduced, so that the sensitivity and the recognition accuracy of light-sensing fingerprint recognition are improved.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
Synchronization method for single carrier frequency domain equalization system and realization circuit thereof
InactiveCN102594745ASimple and concise structureReduce the burden onMulti-frequency code systemsTransmitter/receiver shaping networksCarrier signalPeak value
The invention discloses a synchronization method for a single carrier frequency domain equalization system, which comprises a multiplex technique and a bit synchronization method based on training characters. According to the method, three training characters are added at a frame head and used for completing various types of synchronization and signaling estimation algorithm, so that the load of the frame head is lowered, and effective transmission rate of data is improved. The invention discloses bit synchronization algorithm, and the algorithm is divided into an initial synchronism and accurate synchronization, after the range of the initial synchronism is confirmed, an accurate synchronization position is found out in the range by adopting accurate synchronization method, compared with a conventional bit synchronization method, other peak value of the algorithm can not exist out the range of the initial synchronization, and the algorithm has more accurate bit synchronization position judegement ability and has more high working efficiency.
Owner:东南大学无锡分校
Methods and apparatus for increasing the efficiency of electronic data storage and transmission
InactiveUS8639753B1Efficient compressionDigital data information retrievalMultiple digital computer combinationsData miningElectronic data
An electronic data storage and transmission system. A plurality of electronic data objects may be associated to a plurality of electronic data indicators, and the associations may be combined. Contextual awareness of a second location may allow generation of streamlined electronic data objects. Electronic spatial data objects may be automatically contiguously combined and compression may be leveraged with combination efficiencies. Combinations of electronic data objects may be threshold limited. Transmission of electronic data may achieve effective compression and effective transmission rates exceeding a benchmark network transmission rate of an electronic data communications network.
Owner:SQUASH COMPRESSION
Short packet transmission delay analysis method in large-scale MIMO-NOMA system
ActiveCN110677178AImprove reliabilityGuaranteed Transmission Error ProbabilityRadio transmissionTransmission monitoringPacket communicationEngineering
The invention discloses a short packet transmission delay analysis method in a large-scale MIMO-NOMA system. In the large-scale MIMO-NOMA short packet transmission time delay analysis method, a large-scale MIMO-NOMA technology is applied to a short packet communication scene for the first time; a channel evaluation matrix of non-ideal channel state information is obtained by using channel duality;a zero-forcing beam forming technology is adopted to pre-code signals to obtain a received signal of a user, an effective SINR and an effective transmission rate of the user are determined in short packet transmission, and finally a closed expression of a receiving end time delay violation probability upper limit is derived by using random network calculation and Merlin transform.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Adaptive Pacing of Media Content Delivery Over a Wireless Network
ActiveUS20150146552A1Error preventionFrequency-division multiplex detailsDownload rateChannel state information
A method includes monitoring, at a base station of a wireless network, channel quality information corresponding to a wireless channel used by the base station to stream media content to a communication device. The media content is streamed to the communication device at a particular effective transfer rate via data bursts. The method includes selecting, at the base station, a size of a data burst to send to the communication device and a download rate for the data burst. The size and the data rate are based on the channel quality information. The method also includes sending the data burst to the communication device at a first time from the base station.
Owner:AT&T INTPROP I L P
Photomask manufacturing method, pattern copy method, photomask and data base
ActiveCN101382729AAccurately determineAccurate assessmentTransistorPhotomechanical apparatusOptoelectronicsEffective transmission rate
The invention provides a method of manufacturing a photo mask, comprising a procedure of using an exposing unit reappearing emulating exposure condition of exposure condition, testing the exposure on the test mask formed with specified pattern, and obtaining the transmissive light pattern of the tested mask by the image unit, and obtaining the transmissive light pattern data by the obtained transmissive light pattern; and a procedure of obtaining the effective transmission rate according to the the transmissive light pattern data under the exposure condition; and ensuring the shape of the region, and the material or film thickness forming the film on the region according to the effective transmission rate.
Owner:HOYA CORP
Long-distance wire data transmission device with adjustable transmission rate as needed
ActiveCN103516483ASave transmission bandwidthReliable transmissionTransmission control/equlisationError preventionReliable transmissionTransformer
The invention belongs to the field of geophysical exploration. (1) A general transmission method is provided, wherein transmission rate between collection nodes can be adjusted in an optimal mode according to the actual application requirements; (2), the transmission technology is provided, wherein the encoding efficiency is higher and the transmission bandwidth is lower; (3), a device which can achieve longer-distance data reliable transmission can be achieved under the situation of the same effective data transmission. According to the technical scheme, the long-distance wire data transmission device with the adjustable transmission rate as needed is composed of a data receiving interface, a data receiving and forwarding module and a data sending interface, wherein the data receiving interface is mainly composed of a transformer, an MLT-3 / NRZI decoder, an interface level matching network, a clock and data recovery, an NRZI / NRZ decoder, a staticizer and an 8B / 10B decoder. The device is mainly applied to the geophysical exploration.
Owner:善测(天津)科技有限公司
Methods and Apparatus for Increasing the Efficiency of Electronic Data Storage and Transmission
InactiveUS20140156613A1Efficient compressionDigital data information retrievalDigital data processing detailsData miningData store
An electronic data storage and transmission system. A plurality of electronic data objects may be associated to a plurality of electronic data indicators, and the associations may be combined. Contextual awareness of a second location may allow generation of streamlined electronic data objects. Electronic spatial data objects may be automatically contiguously combined and compression may be leveraged with combination efficiencies. Combinations of electronic data objects may be threshold limited. Transmission of electronic data may achieve effective compression and effective transmission rates exceeding a benchmark network transmission rate of an electronic data communications network.
Owner:SQUASH COMPRESSION
Large-scale antenna array relay transmission method adopting analog-digital hybrid detection
ActiveCN106301634AReduce complexityEasy to implementRelay systems monitoringUplink transmissionEngineering
The invention discloses a large-scale antenna array relay transmission method adopting analog-digital hybrid detection. Multiple users send analog signals under the same power, a relay carries out amplification and forwarding of the analog signals on the signals, a base station radio frequency link unit is matched with a large-scale antenna array to detect the received signals, an analog radio frequency detector extracts phase information of multi-user-relay and relay-base-station cascaded channels, a digital baseband detector uses linear detection on an equivalent channel of a product of the cascaded channels and a analog detector, and the analog radio frequency detector is connected with the digital baseband detector by radio frequency links; a base station analyzes a signal-to-interference and noise ratio of received signals, calculates out transmission powder required by the users at a corresponding effective transmission rate, and feeds back the transmission powder to the users; finally, multiple users send the analog signals according to the transmission powder fed back by the base station. According to the large-scale antenna array relay transmission method disclosed by the invention, on the premise of ensuring the effective transmission rate of a system, uplink transmission powder of the users can be reduced according to an exponential rule by increasing the number of receiving antennas, so that energy efficiency of the system is improved.
Owner:SOUTHEAST UNIV
Data network with constrained switch transmission rates
ActiveUS8964555B1Expand the scope ofLow costError preventionTransmission systemsData streamEnd system
A data network includes a plurality of end systems; a plurality of line data buses connected to the end systems; and a plurality of switches connected to the line data buses and to other switches via trunk data buses to define a star topology. The switches and end systems are configured to operate asynchronously. Each switch includes a number of packet schedulers for managing the transmission of received data flow. A number of effective line rate utilization mechanisms are each associated with a respective packet scheduler for providing the service rate of that packet scheduler. Switch egress ports transmit the received data flow. Each switch egress port has a defined configured effective transmission rate. Each effective line rate utilization mechanism reduces the utilization rate to the defined configured effective transmission rate.
Owner:ROCKWELL COLLINS INC
Cooperative transmission method suitable for distributed antenna system, base station and terminal
ActiveCN105471790ASolve the problem of out-of-sync arrivalEasy to receiveSite diversitySynchronisation arrangementDistributed antenna systemEngineering
The invention discloses a cooperative transmission method suitable for a distributed antenna system. The cooperative transmission method comprises the steps of determining a signal transmission manner which is used by each antenna according to a channel relationship between each antenna and a terminal in the distributed antenna system; and transmitting a signal to one or a plurality of terminals by each antenna in a corresponding signal transmission manner. The invention also discloses a corresponding base station and a terminal. The cooperative transmission method provided by the invention can effectively settle a problem of asynchronous signal arrival from a plurality of antennae and always ensures a fact that a user can always receive signals from different antennae in a relatively good manner, thereby obtaining a maximal effective transmission rate.
Owner:BEIJING SAMSUNG TELECOM R&D CENT +1
System and method for dynamically adjusting frame rate of motion camera
InactiveCN105141873AEffective transfer rate synchronization matchingLatency ConsistentTelevision system detailsColor television detailsCommunication qualityNetwork conditions
The invention discloses a system and a method for dynamically adjusting the frame rate of a motion camera. The system comprises an image acquisition module, a processing unit, a wireless communication module, a network condition detection module and a frame rate matching module which are integrated on the motion camera, and is characterized in that the image acquisition module is used for acquiring image data in real time according to a certain image acquisition frame rate; the processing unit is used for controlling the image acquisition frame rage of the image acquisition module; the wireless communication module is used for forwarding the image data acquired by the image acquisition module in real time through a wireless network; the network condition detection module is used for detecting the communication quality of the wireless network in real time and detecting the real-time effective transmission rate of the wireless network; and the frame rate matching module is used for dynamically adjusting the image acquisition frame rate according to the real-time effective transmission rate of the wireless network so as to enable the image acquisition frame rate to be synchronously matched with the real-time effective transmission rate of the wireless network. According to the invention, the acquisition frame rate of the image acquisition module can be adjusted according to user requirements or through feedback of network conditions, thereby enabling watch delay of viewers to be always consistent with acquisition delay of the motion camera.
Owner:CHENGDU CK SCI & TECH
Visible light communication equipment testing system
InactiveCN110943779AImprove test efficiencyEffective transfer rateClose-range type systemsElectromagnetic receiversPhotovoltaic detectorsSquare waveform
The invention relates to a visible light communication equipment testing system, and the system can transmit a square wave electric signal to a transmitting end through a first signal generation unitin a transmission rate testing module, and analyzes a signal received by a receiving end through a first signal analysis unit, thereby obtaining the effective transmission rate of a to-be-tested visible light communication system. In a modulation performance test module, a second signal generation unit is connected with an emission light source in the visible light communication equipment to be tested; and photoelectric conversion is performed on the second optical signal emitted by the emission light source through a convergence filtering unit and a photoelectric detector, and the communication electric signal obtained through conversion is transmitted to the second signal analysis unit so that the modulation performance result of the emission light source can be obtained. By utilizing the visible light communication equipment testing system, digital quantity testing and analog quantity testing can be carried out on the visible light communication equipment to be tested, an effectivetransmission rate and a modulation performance result are obtained, and then the testing efficiency of the visible light communication equipment can be improved.
Owner:CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST
Rate self-adaption method based on channel statistical information for real-time WiFi
ActiveCN107370550AIncreased throughput (Improve latency) performanceError prevention/detection by using return channelSynchronisation arrangementChannel state informationRate adaptation
The invention discloses a rate self-adaption method based on channel statistical information for real-time WiFi, which comprises the steps that link scheduling adopts a centralized mode, that is, CSMA / CA is turned off, a TDMA mode is adopted, an AP (Access Point) allocates fixed scheduling time for each station, and data transmission of each station is real-time predictable; and then wireless network channel statistical information is acquired in real time, and transmission rate selection is determined according to updating of the statistical information. The former is an estimation mechanism which is used for estimating the channel quality; and the latter is a response mechanism which realizes adaptive adjustment of the rate. Short-term and long-term channel quality changes are controlled through an inquiring mechanism, the transmission history is intelligently monitored in a continuous manner, and a new data rate which may exceeds the current rate is detected. Effective transmission rate adjustment is performed to quickly adapt to the changes. Therefore, the TDMA link scheduling and the channel information statistics based rate self-adaption method optimize the throughput or delay performance on a wireless link.
Owner:ZHEJIANG SCI-TECH UNIV
Parallel data processing method and device suitable for FBMC transmission
ActiveCN108650205ARealize comprehensive utilizationGuaranteed non-interferenceMulti-frequency code systemsMultiple carrier systemsTime domainQam modulation
The invention discloses a parallel data processing method and device suitable for FBMC transmission. The parallel data processing method comprises the following steps: performing QAM modulation on theinput data in parallel; performing offset quadrature amplitude modulation (OQAM) on a modulated signal; then, filtering an OQAM symbol in the frequency domain by using the frequency domain extensionmethod, and transforming the filtered data into time domain data for processing; finally, processing the time domain data through the overlapping addition manner to achieve waveform hybrid and send out the waveform hybrid; carrying out waveform separation processing at a receiving end, and performing a series of demodulation steps correspondingly, and restoring the original transmitted data. The parallel data processing method proposed by the invention is combined with the FBMC-specific waveform hybrid transmission mechanism to avoid the efficiency loss caused by the frequency domain expansion, the transmission and reception process of the FBMC is effectively optimized, and the K (prototype filter overlap factor) times effective transmission rate can be reached under the same sampling ratecondition.
Owner:SOUTHEAST UNIV
End-to-end TCP session speed measurement method
InactiveCN108880938AUndisturbedSave processing resourcesData switching networksTimestampTime segment
The invention discloses an end-to-end TCP session speed measurement method. The transmission speed is obtained by calculating the byte number transmitted in a time period, that is to say, the transmission speed=the byte number / the transmission time, wherein the byte number is obtained by extracting confirmation serial numbers of TCP message heads of a first confirmation message and a second confirmation message and calculating the difference value of the confirmation serial numbers, and the transmission time is obtained by calculating the difference value of timestamps of the first conformation message and the second confirmation message. According to the method, the actual effective transmission speed of an upper application can be precisely measured without being interfered by backgroundtraffic, a few of system resources are occupied, and additional bandwidth is not occupied.
Owner:CHENGDU WANGDING SCI & TECH
Methods and apparatus for increasing the efficiency of electronic data storage and transmission
InactiveUS9081790B2Efficient compressionDigital data information retrievalMultiple digital computer combinationsData miningElectronic data
An electronic data storage and transmission system. A plurality of electronic data objects may be associated to a plurality of electronic data indicators, and the associations may be combined. Contextual awareness of a second location may allow generation of streamlined electronic data objects. Electronic spatial data objects may be automatically contiguously combined and compression may be leveraged with combination efficiencies. Combinations of electronic data objects may be threshold limited. Transmission of electronic data may achieve effective compression and effective transmission rates exceeding a benchmark network transmission rate of an electronic data communications network.
Owner:SQUASH COMPRESSION
Unmanned aerial vehicle relay covert communication method for flight listener
ActiveCN112954672AActive radio relay systemsSecurity arrangementPrecodingInterference (communication)
The invention relates to an unmanned aerial vehicle relay covert communication method for a flight listener, which comprises the following steps of: firstly listing the receiving conditions of a movable unmanned aerial vehicle listener on an information source signal and a relay signal, finding out an optimal distinguishing detection threshold value, and judging whether an information source or a relay carries out signal transmission or not with the highest accuracy rate; and analyzing the suspension position of the unmanned aerial vehicle monitor, so that the sum of the accuracy of judging whether the information source and the relay transmit information is maximized. Afterwards, under the worst covert communication situation for legal users, an information source end utilizing multi-antenna channel precoding to realize maximum rate transmission, a relay end utilizing signal transmitting power Gaussian to introduce interference to a listener, and jointly optimizing the transmitting power of an information source and a relay and the number of limited word lengths, so that the transmission rate of the effective information source and information sink is maximized. According to the method, a value reference method can be provided for maximizing the effective transmission rate of the information source end and the information sink end on the premise of ensuring that the interruption probability of covert communication does not exceed a set value.
Owner:DALIAN UNIV OF TECH +1
USXGMII multichannel IPG precise compensation method and system
ActiveCN106506118AExactly match the transmission rateAccurately match the bearer rateModulated-carrier systemsTime-division multiplexData needsComputer science
The invention provides a USXGMII multichannel IPG precise compensation method and system. The method comprises the steps of obtaining the length of a correspondingly deleted IPG unit between two groups of AM data inserted corresponding to each logic channel according to a working rate of a physical link, the number of distributed logic channels, a valid transmission rate corresponding to each logic channel and a length of a group of AM data inserted into each logic channel; and obtaining a data deletion interval corresponding to each logic channel and the length of the IPG data needing to be deleted among the data deletion intervals according to the length of the correspondingly deleted IPG unit of each logic channel and the number of the inserted AM data. According to the USXGMII multichannel IPG precise compensation method and system provided by the invention, the transmission rate of the data is enabled to precisely match the bearing rates of the logic channels, the performance demand of the system is satisfied, and the stability and reliability of a network chip are improved.
Owner:SUZHOU CENTEC COMM CO LTD
Method and device for determining video transmission quality
The invention discloses a method and device for determining video transmission quality. The method is applied to a video transmission network, and the video transmission network comprises a video server, network equipment and user equipment. The method comprises: collecting the data volume of a video stream by the network equipment in a predetermined period; acquiring a transmission duration formed by transmitting the data message to the user equipment in the predetermined period by the video server, and obtaining effective transmission duration obtained by removing the duration that the datatraffic is zero in a predetermined period, determining an average transmission rate according to the data volume of the transmission duration, determining an effective transmission rate according tothe effective transmission duration and the data volume, and determining the transmission quality of the video stream according to the average transmission rate and the effective transmission rate. According to the technical scheme provided by the invention, the transmission quality of the video stream can be determined without analyzing the data message content of the video stream, so that the transmission quality of the video encrypted and transmitted by protocols such as HTTPS and UDP can be evaluated, and the practicability is high.
Owner:HUAWEI TECH CO LTD
An XCTD remote command and data transmission method
InactiveCN109729031AGuaranteed normal transmissionStrong anti-electromagnetic interferencePhase-modulated carrier systemsData signalElectromagnetic interference
The invention belongs to the technical field of marine science investigation, and particularly relates to an XCTD remote command and data transmission method. The system performs switching between downlink command signal transmission from a deck unit to a probe and uplink data signal transmission from the probe to the deck unit based on a time division multiplexing time sequence of command and data transmission. And time division multiplexing of signals is realized on the same physical transmission path. According to the method, long-distance command and data transmission in seawater can be realized, high-fidelity data extraction is performed at a receiving end, effective transmission of XCTD data is finally realized, and the method has relatively high anti-electromagnetic interference andanti-noise capabilities.
Owner:OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
Network system, station-side apparatus, and method of controlling communications
ActiveUS8965206B2Reduce injusticeReduce communicationWavelength-division multiplex systemsTelecommunicationsControl communications
An aspect of this invention is a network system including subscriber apparatuses and a station-side apparatus for communicating with the subscriber apparatuses. The station-side apparatus communicates with the subscriber apparatuses using wavelengths. The station-side apparatus determines a wavelength to be used by each of at least one subscriber apparatus of the subscriber apparatuses based on effective transmission rates used by the subscriber apparatuses in communications with the station-side apparatus.
Owner:HITACHI LTD
Transmission rate control method, mobile station, radio base station, and radio network controller
ActiveUS8169976B2Measure a reception powerPower managementNetwork traffic/resource managementRadio networksRadio Network Controller
A transmission rate control method includes: measuring, at a radio base station, a reception power of a DPCH transmitted from the mobile station; extracting, at the radio base station, a transmission data block size of the uplink user data from an E-DPCCH; acquiring, at the radio base station, a transmission power ratio of an E-DPDCH to the DPCCH which corresponds to the extracted transmission data block size; calculating, at the radio base station, a reception power of the E-DPDCH based on the measured reception power and the acquired transmission power ratio; calculating, at the radio base station, a relative transmission rate of the uplink user data based on the calculated reception power; notifying, at the radio base station, the relative transmission rate to the mobile station via a E-RGCH; and controlling, at the mobile station, the transmission rate based on the notified relative transmission rate.
Owner:NTT DOCOMO INC
Masstone photomask and pattern transfer method using the same
InactiveCN101546117APhotomechanical apparatusSemiconductor/solid-state device manufacturingNumerical aperturePhotomask
The present invention relates to a masstone photomask and pattern transfer method using the same. The masstone photomask forms transfer pattern having a transparent zone, a light shading zone and a semi-transparent zone by using a photomask (23) arranged on a transparent substrate (21) to shade exposure light and a semi-transparent film (22) for the exposure light. An optical system with value hole diameter of 0.08 and degree of coherence of 0.8 receives exposure light with g ray, h ray and i ray of 1:1:1 through the semi-transparent zone and calculates effective transmission rate of the semi-transparent zone, herein mask surface internal distribution range of effective transmission rate of the semi-transparent zone is lower than 2.0%.
Owner:HOYA CORP
Method of adaptive bandwidth adjustment for industrial field communications
ActiveCN111262799ALow costHigh bandwidthChannel estimationData switching networksCommunications systemGaussian process
The invention discloses an adaptive bandwidth adjustment method for industrial field communication, which belongs to the technical field of communications. The method comprises the steps of (1) performing early-stage preparation of cyclic communication; (2) estimating the current bandwidth and predicting a channel gain matrix corresponding to the pre-spread spectrum bandwidth by using a Gaussian process regression algorithm after entering cyclic communication; (3) obtaining and comparing the current receiving end rate v; (4) comparing the mean value of the channel gain matrixes H; (5) carryingout cyclic detection when any condition in the step (3) or the step (4) is not met; and (6) carrying out bandwidth adjustment after further judging the channel gain matrix corresponding to the pre-spread spectrum bandwidth when any condition in the step (3) or the step (4) is met. According to the invention, an accurate channel estimation result is obtained by combining a channel estimation algorithm based on an intelligent algorithm and is evaluated; meanwhile, in combination with the effective data transmission rate v of the current receiving end, the bandwidth is dynamically adjusted according to the effective transmission rate V of the specified communication system; and the communication resource cost is saved under the condition that the communication rate requirement is met.
Owner:YANSHAN UNIV
A method and device for determining video transmission quality
Owner:HUAWEI TECH CO LTD
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