55results about How to "Moderate complexity" patented technology

The present invention provides a method for indicating wireless channel resource allocation, indicating a starting position and an ending position of m group(s) distributed to a terminal, and indicating a first RBG and a last RBG for a group containing at least two RBGs; when the group contains one RBG and is not the last one, indicating the RBG contained by the group and a previous RBG of a firstRBG contained by a next group; when the group only contain one RBG and is the last one, indicating the RBG and a virtual RBG; or when the group only contain one RBG and is not the first one, indicating a following RBG of the last RBG contained by a previous group, and the RBG contained by the group; when the group only contain one RBG and is the first one, indicating a virtual RBG and the RBG contained by the group. The invention also provides a corresponding decoding method, a base station and a terminal for the wireless channel resource allocation. According to the invention, no matter whatis a number m of the groups, it is nothing remains but to add one virtual RBG only, such that signalling spending is minimum.

The invention provides a method for using a sine model to conceal an audio mistake, which belongs to the network and communication field. The operation procedures include: 1. the rebuilding of the whole system is classified into four parallel instances according to the mistakes of a previous frame and a current frame: A. the previous frame and the current frame are both correct and return after being correctly decoded; B. the previous frame is correct and the current frame is wrong, then a time domain model is analyzed and synthesized, and a rebuilding frame is made by overlapping the odd symmetrical section of a synthesized frame and the residual even symmetrical section; C. the previous frame is wrong and the current frame is correct, then a rebuilding frame is made by overlapping the even symmetrical section of the synthesized frame obtained from the model analysis and the residual odd symmetrical section; D. both the previous frame and the current frame are wrong, then the current frame is treated in a simple way; 2. output the obtained decoding result or the wrongly concealed time domain rebuilding. The method is suitable for treatment under various frame loss rates, and the continuous frame loss probability is relatively small for the medium or low frame loss rates, while the medium or high frame loss rates are treated by using a simple frame loss strategy, which can not cause greater audio distortion.

The invention discloses a fake plate vehicle recognition system and method. The system comprises a front end image acquisition device and a background image processing device which are in connection through a data line; the front end image acquisition device is installed at a road toll station entrance or a parking lot entrance, and comprises a side camera, a top camera and a front camera. The fake plate vehicle recognition system is an automatic intelligent query system, and can query actively; once finding a mode fake plate vehicle, the fake plate vehicle recognition system can inform traffic management departments at the first time, thereby improving the timeliness of investigating and penalizing fake plate vehicles of associated departments. The system can compare information including vehicle logos, license plates, vehicle colors, etc., and as detailed as vehicle models and configuration, thereby improving the accuracy of investigating and penalizing fake plate vehicles; a constructed nerve network has a reasonable structure, algorithm complexity is moderate, and operation is fast; the system has a simple hardware structure, and is easy to realize.

An aspect of the present invention is the use of two criteria in channel estimation, e.g. a value related to the length of an estimated Channel Impulse Response (CIR) and a value related to a noise content of the received signal, e.g. a Signal-to-Noise Ratio (SNR). These parameters can be used for the post-processing algorithm. An advantage of the present invention is that it is much more robust against long channels and/or high noise contents in received signals. Additionally it has moderate implementation complexity.

The invention discloses a multi-energy online control system for data centers under dynamic cloud service requests. The multi-energy online control system for data centers under dynamic cloud service requests comprises a system status monitoring module, a load scheduling module and a multi-source energy supply system management module, wherein the load scheduling module comprises a delay-sensitive request scheduling sub-module and a delay tolerant job scheduling sub-module. The system status monitoring module is used for receiving service requests from a user's cloud service every once in a while, determining whether the cloud service request is a delay-sensitive request or a delay tolerant job, and sending the cloud service request belonging to the delay-sensitive request to the delay-sensitive request scheduling sub-module of the load scheduling module while sending the cloud service request belonging to the delay tolerant job to the delay tolerant job scheduling sub-module of the load scheduling module. The multi-energy online control system for data centers under dynamic cloud service requests has the advantages that long-term operating cost of data center energy supply system can be optimized, no system data is needed to be obtained in advance, and no steady state distribution is needed to be assumed.

The invention relates to a signal channel estimate method used in orthogonal frequency division multiplexing system, a relative device, and an orthogonal frequency division multiplexing system using said device, wherein said signal channel estimate method comprises: fixing the signal channel frequency response of sub carrier wave of at least one forward mark and the signal channel frequency response of several pilots of one data mark in one orthogonal frequency division multiplexing frame; based on said the nearby pilot of data mark, estimating the signal channel frequency response of data sub carrier wave; using said signal frequency response to correct the signal channel frequency response of said data sub carrier wave; compared with present technique, the invention can avoid noise effect and high interpolation error, to improve the system property, with low complexity.

The invention relates to a node positioning method, in particular to a WSN (wireless sensor network) node positioning method based on RSS (Received Signal Strength) and distance measurement unbiased estimation. The WSN node positioning method based on the RSS and the distance measurement unbiased estimation solves the problems that a WSN node positioning algorithm based on RSS distance measurement is influenced by noise, and thereby can not fully analyze distance measurement error, and furthermore can not essentially eliminate distance measurement deviation caused by the noise. The WSN node positioning method based on the RSS and the distance measurement unbiased estimation includes steps: 1, setting an unknown node U=(x, y), and setting a coordinate of a signal from a beacon node Bi as (xi, yi); 2, calculating the distance vi between the unknown node and the beacon node Bi; 3, obtaining unbiased estimator; 4, calculating the distance between the unknown node U and the beacon node Bi; 5, using a Newton iteration method to solve the position (x, y) of the unknown node U; 6, obtaining delta X7, and obtaining positioned positions xk and yk of the unknown node and the like. The WSN node positioning method based on the RSS and the distance measurement unbiased estimation is used in the node positioning field.

The embodiment of the invention discloses a method for detecting frequency errors of a sampling clock, a frequency discriminator thereof. The method comprises the following steps: respectively calculating and obtaining partial channel impulse responses on pseudo random sequences of two periods according to the received pseudo random sequences; correlating the two partial channel impulse responsesto acquire related waveforms; and performing lead-lag sampling time estimation on the related waveforms, and detecting errors of frequency of the sampling clock according to output results of the sampling time estimation. The frequency discriminator comprises a calculation module, a relation module and a detection module. Correspondingly, the embodiment of the invention also discloses a method anda system for synchronizing the sampling time; and impacts of small delay multipath can be mutually counteracted by constructing the channel impulse responses symmetric about a main path on the periphery of the main path so as to obtain the sampling clock without frequency errors, and achieve synchronization of the sampling time. The method has moderate complexity.

An improvement to a conventional multistage pipelined Analog-to-Digital Converter (ADC) 1 having multiple stages 11-14, connected one to the next by an interstage amplifier 113, 123, 133, each stage with a flash digital-to-analog converter (DAC) 111, 121, 131, a digital-to-analog converter (DAC) 112, 122, 132 producing an associated intermediate analog signal, a subtractor 113, 123, 133 of intermediate analog signals to produce an analog difference signal fed to the interstage amplifier of a next following stage, and a thermometer encoder 114, 124, 134 producing an associated digital output signal; the improvement directed to canceling noise resultant from component mismatch, particularly mismatched capacitors paired with a first-stage DAC 212 of the ADC 1. The improved ADC 2 uses in at least a first, and preferably two, stages 21, 22: (i) a flash DAC 212, 222 of a dynamic element matching (DEM) type producing, as well as an associated intermediate analog signal, random bits and parity bits; (ii) a Digital Noise Cancellation (DNC) logic circuit 217, 227, receiving the random bits and the parity bits and a digitized residue sum of the digital output signal's arising from all stages beyond a stage of which the DNC logic circuit 217, 227 is a part, so as to produce an error estimate for the stage; and (iii) a subtractor 218, 228 subtracting the error estimates of the DNC logic circuits 217, 227 from the combined digital output signal of all higher stages 22-24 in order to produce a corrected ADC digital output signal. A 14-bit 4-stage pipelined ADC 2 having, by way of example, a theoretical optimum conversion precision of 14.1 bits and a realistic conversion precision of 10.4 bits, is enhanced by modestly-sized and continuously-automatically-operative DNC to realize 13.3 bits conversion precision.

The invention relates to a geometric positioning improvement method under an NLOS (non-line-of-sight) environment, which adopts the Gauss-Newton iteration method with fast convergence, and combines with a grid searching method to optimize the iteration initial coordinate value. Compared with the existing geometric positioning method, the geometric positioning improvement method has the advantages that the complexity is moderated, the fast and stable convergence is provided, and the higher mobile station positioning accuracy can be obtained.

A method of detecting in a biological sample at least two microorganisms belonging to two different taxa, represented by intensity vectors P_j obtained by multidimensional measurement technique,

• • including (i) acquiring a digital signal of the biological sample with the measurement
  • technology, (ii) determining an intensity vector x according to the acquired digital
  • signal, (iii) constructing a set {ŷ_l} of candidate models ŷ_l=(ŷ_j,ŷ₀)_l modeling intensity vector x according to

relation

in which ∀jε[[1,K]], P_j^(a)=Σ_i=1^Ka_ijP_i; and ∀(i,j)ε[[1,K]]², a_ij is a predetermined

• • coefficient, (iv) selecting a candidate model {circumflex over (γ)}_sel from set {{circumflex over (γ)}_l} according to

in which C_v({circumflex over (γ)}_l) is a criterion quantifying a reconstruction error between the intensity vector of biological sample x and reconstruction {circumflex over (x)}_l of intensity vector x by a candidate model {circumflex over (γ)}_l; and C_c({circumflex over (γ)}_l) is a criterion quantifying the complexity of a candidate

• • model {circumflex over (γ)}_l, and (v) determining the presence in the biological sample of at least two taxa when at least two components of vector {circumflex over (γ)}_j of {circumflex over (γ)}_sel are greater than a positive threshold.

The present invention concerns a receiver and a method for retrieving data from Ultra wideband radio transmission signals received by a receiver and transmitted in packets containing at least a preamble known to the receiver and a payload containing data unknown to the receiver. The payload data is formed of at least one burst containing at least one pulse. The method comprises the steps of receiving a signal corresponding to the preamble of a packet by a receiver; determining the energy of the received signal; determining weighting coefficients from the energy of the received signal; receiving a signal corresponding to the payload of a packet by a receiver; determining the energy of the received signal; calculating a threshold depending on the weighting coefficients; and applying a decision rule based on the sampled energy, weighted by said weighting coefficients and depending on said calculated threshold.

A concrete delivery subsystem for delivering concrete to a plurality of casting machines having a concrete mixing source, a concrete pump; and a concrete transfer system, which includes a concrete placement boom a concrete delivery hose, and a concrete manifold having a splitting edge having a fillet radius within the range of 0.005 inch. to 0.01 inch. Also a concrete manifold having a splitting edge having a fillet radius within the range of 0.005 inch. to 0.01 inch.

The invention requests to protect an algorithm for reducing a PAPR (Peak to Average Power Ratio) in GFDM system on basis of random filter allocation, and relates to a wireless communication system. Just like all multi-carrier systems, due to superposition of output signals, the GFDM system still has a high PAPR. Multiple methods for reducing a PAPR in an OFDM system exist, but due to the characteristics of the GFDM system, an effect obtained by directly adopting the method for reducing the PAPR in the OFDM system is not ideal. Aiming at the problems of the current research, according to the structural characteristic that the GFDM system can flexibly select a filter, a novel method for reducing the PAPR in the system is disclosed. By randomly allocating different filters to each path of subcarrier, the novel method aims to destroy phase consistency in the signal superposition process so as to effectively inhibit the PAPR, and cannot cause distortion of the signals. Theoretical analysis and a simulation result prove superiority of the algorithm.

The present invention relates to a method of determining a distance or location of a remote device or reflector, the method comprising: receiving a signal from a remote signal transmitter associated with or contained in or attached to the remote device; estimating a first propagation delay associated with the received signal, wherein the first propagation delay represents a first candidate for a correct propagation delay; deriving a relationship between the first candidate and one or more other candidates for a correct propagation delay from the received signal; determining a plurality of other candidates for a correct propagation delay based on said relationship; generating a likelihood histogram based on said candidates for a correct propagation delay; selecting a propagation delay from said candidates based on the likelihood histogram; and determining a distance or location of the remote device or reflector using the selected propagation delay.

The invention discloses a Chinese read logarithm vision testing chart and a Chinese read ability testing method. The Chinese read logarithm vision testing chart includes a plurality of lines of optotypes which are centralized and arranged along a longitudinal axis; the optotypes are sentences which are showed in each line; each sentence includes Chinese characters having the same printing size; the number of the optotypes in each line is identical; contents of the sentences of the optotypes in all the lines are different from each other; the size of the optotypes is represented by the height of the Chinese characters in the sentences of the optotypes, and is gradually decreasing from top to bottom; and the optotype size is a logarithm mark. In test, the Chinese read logarithm vision testing chart is drawn, the optotypes are visible for a subject line by line, the reading time and the number of error characters are recorded till the number of recognizable Chinese characters for the subject is equal to 0, and the Chinese character recognition ability of the subject and the reading speed of the subject can be calculated. The Chinese read logarithm vision testing chart and the Chineseread ability testing method can quickly and accurately acquire the Chinese character recognition ability and the reading speed of the subject, and can be applied to research or clinics.

The invention discloses an advertisement pushing method based on an age group. The method comprises the following steps of S1, using a camera to acquire a human face image; S2, preprocessing the human face image; S3, extracting LBP features of the human face image; S4, judging whether an age segmenting model is built, if yes, entering a step S6, and otherwise, entering a step S5; S5, building an age segmenting model; S6, acquiring the age group by using the age segmenting model; and S7, pushing advertisement content corresponding to the age group according to the acquired age group. Compared with the prior art, when acquiring the human face image, the camera is in flush with a human face by using key points to acquire a front human face image, so as to be convenient to extract the LBP features, and thus accuracy is improved; the dimension size is moderate, so as to be convenient to model and compute; the advertisement content is pushed according to the age computed by the age segmenting model, the accuracy of recognizing the age according to the human face image is relatively high, advertisement pushing of a television is intelligently controlled, and daily requirements of people are met.

A signal processor for providing one or more processed audio signals on the basis of one or more input audio signals is configured to estimate coefficients of an autoregressive reverberation model using the input audio signals and the delayed noise-reduced reverberant signals obtained using a noise reduction. The signal processor is configured to provide noise-reduced reverberant signals using the input audio signals and the estimated coefficients of the autoregressive reverberation model. The signal processor is configured to derive noise-reduced and reverberation-reduced output signals using the noise-reduced reverberant signals and the estimated coefficients of the autoregressive reverberation model. A method and a computer program include a similar functionality.