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运算复杂性
相关语句
  computational complexity
    Since efficient and fast cyclic convolution algorithms are available, the algorithm has low computational complexity, simple and regular structure.
    利用循环卷积和扭循环卷积的高效率和规则的算法 ,构造具有简单、规则的结构和较低的运算复杂性的奇素长度 DCT快速算法。
短句来源
    So both computational complexity and coding efficiency should be thought and made to the optimal trade-off in the implementation of actual coding system.
    故实际编码系统开发需要在运算复杂性和编码效率之间进行折衷,兼顾考虑。
短句来源
    The use of the Walsh-Hadamard Transformation (WHT ) is proposed to improveconvergent performance and to redtice operation for Adaptive Speech echo Canceller(AEC). The arithmetic of this transformation is a simple real arithmetic,This paper compares WHTLMS algorithm(WLMS) with both the time domain and DFT LMS algorithms(TLMS andFLMS)in terns of the convergent performance and computational complexity by theoreticalanalysis and computer simulation.
    为改进自适应语声回波抑制器的收敛性能和减小其运算量,提出了使用较简单而实运算的按阿达玛排列的离散瓦尔什变换(WHT).通过理论分析和计算机模拟,在收敛性能和运算复杂性方面,将WTHLMS算法(WLMS)与时域LMS算法(TLMS)和DFT LMS算法(FLMS)在AEC中的应用进行了比较.
短句来源
    Since efficient and fast cyclic convolution algorithms are available in the literature, the algorithm has low computational complexity, simple and regular structure.
    由于循环卷积和扭循环卷积具有非常高的效率和规则 ,因此 ,本算法具有简单、规则的结构和较低的运算复杂性 .
短句来源
    This paper presents two algorithms, the two-dimensional FIR channel estimation and the two-dimensional adaptive Wiener channel estimation, both of which do not need the statistical parameters of the channel. The two algorithms not only reduce the computational complexity but also have a good performance in practice.
    本文提出了两种信道估计的算法——二维FIR信道估计和二维自适应Wiener信道估计,这两种方法不需要预先知道信道的统计参数信息,不仅减少了运算复杂性,而且在实际中具有很好的性能。
短句来源
  calculating complexity
    An adaptive algorithm of motion estimation employs the spatial-temproal correlation presented in motion vector field to reduce calculating complexity.
    首先给出一种空-时相关自适应运动估计算法,有效降低运算复杂性
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  “运算复杂性”译为未确定词的双语例句
    In addition, compared with the pixel-domain transcoding, the DCT domain transcoding can save the conversion pair of DCT/IDCT, which may decreases operation complexity, thereby, here the method of the DCT domain transcoding is discussed, consists of the algorithms of the DCT domain image down-sampling(mainly aimed at such position that the conversion proportion is relatively simple), DCT domain anti motion compensation and DCT domain motion compensation.
    另外,DCT 域转码比像素域转码节省了DCT/IDCT 变换对,可以降低运算复杂性,因此文中又论述了DCT域转码处理方法,包括DCT 域图像下采样(主要针对变换比例较简单的情况)、DCT域反运动补偿和DCT 域运动补偿算法。
短句来源
    the calculation complexity of algorithm TSA-2 is O(N5), but for HEA it is O(N4-5 log2N), which results in appreciable reduction of calculation time needed.
    而且它的运算复杂性为O(N~(4.5log_2N),从而较之运算复杂性为O(N~5)的算法TSA-2成倍地缩短了编排时间。
短句来源
    By use of the symmetries of coefficients, a special designed fast polynomial transform algorithm and a fast recursive decomposition algorithm for 1D_RDCT are also presented.
    利用算法中系数的特点 ,设计了简化的快速多项式变换算法和 1D_RDCT递归分解算法 ,使运算复杂性进一步降低 .
短句来源
    In addition,compressed domain transcoder can skip the DCT/IDCT transformation processes,so as to reduce the complexity greatly. So the chapter introduces the compressed domain transcoding technologies,including DCT-domain image down-conversion (in case of the simple conversion ratio),DCT-domain motion-compensation and inverse motion-compensation.
    另外,压缩域转码,比空域转码节省了DCT/IDCT变换对,可以降低运算复杂性,因此文中又论述了压缩域转码处理方法,包括DCT域图像下采样(主要针对变换比例较简单的情况)、DCT域反运动补偿和DCT域运动补偿算法。
短句来源
    The chapter firstly analyzes some key issues of trancoding design. Based on comparison of these two standards,the chapter puts forward five trancoding architectures. Comparing these five architectures,each is a compromise between complexity and video quality.
    文中首先分析转码器设计中的一些关键问题,比较两种标准之间的异同点,由此推出五种空域和压缩域转码器的结构,并对五种转码器的性能进行分析比较,每种转码结构是运算复杂性和视频质量的一种折衷算法,都各有其优缺点。
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  computational complexity
Like the lattice factorization, the decomposition presented here asymptotically reduces the computational complexity of the transform by a factor two.
      
Computational complexity of (2,2) path chromatic number problem
      
The algorithm exhibits either a solution or its nonexistence after at most, steps (where n is the dimension of the problem) and the computational complexity is at most1/3n3 + O(n2)
      
This paper studies the computational complexity of this problem for graphs with small diameters.
      
However, its computational complexity was comparable to that of the normalized least-mean-square (NLMS) algorithm.
      
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  calculating complexity
We are calculating complexity in a formal way, and with this avoiding the problem with ad-hoc heuristics.
      


The architecture and operation for the satellite communication system SS-TDMA is described, and the emphasis is on the time slot assignment for an SS-TDMA system. A High-Efficient Time Slot Assignment Algorithm HEA based on the analysis of algorithm TSA-2 is proposed. It decreases the number of modes produced in algorithm TSA-2 by 37.8%; the calculation complexity of algorithm TSA-2 is O(N5), but for HEA it is O(N4-5 log2N), which results in appreciable reduction of calculation time needed.

本文首先简述了SS-TDMA卫星通信系统的组成与工作原理,然后着重对该系统的按需分配时隙编排算法进行了讨论。在分析已有的时隙编排算法的基础上,提出了一个高效的时隙编排算法HEA(High-Efficient Time slot Assignment Algorithm)。它较之算法TSA-2,模式数平均减少了37.8%;而且它的运算复杂性为O(N~(4.5log_2N),从而较之运算复杂性为O(N~5)的算法TSA-2成倍地缩短了编排时间。

The use of the Walsh-Hadamard Transformation (WHT ) is proposed to improveconvergent performance and to redtice operation for Adaptive Speech echo Canceller(AEC). The arithmetic of this transformation is a simple real arithmetic,This paper compares WHTLMS algorithm(WLMS) with both the time domain and DFT LMS algorithms(TLMS andFLMS)in terns of the convergent performance and computational complexity by theoreticalanalysis and computer simulation.

为改进自适应语声回波抑制器的收敛性能和减小其运算量,提出了使用较简单而实运算的按阿达玛排列的离散瓦尔什变换(WHT).通过理论分析和计算机模拟,在收敛性能和运算复杂性方面,将WTHLMS算法(WLMS)与时域LMS算法(TLMS)和DFT LMS算法(FLMS)在AEC中的应用进行了比较.

A novel video coding algorithm based on adaptive blocking regional wavelet transform and dis-crete cosine transform is described in this paper. An adaptive algorithm of motion estimation employs the spatial-temproal correlation presented in motion vector field to reduce calculating complexity. The high energy regions ofinterframe predicted difference are first detected using hierarchical sliding-window region forming algorithm.Thedetected regions are segmented to DWT regions and DCY regions. This scheme...

A novel video coding algorithm based on adaptive blocking regional wavelet transform and dis-crete cosine transform is described in this paper. An adaptive algorithm of motion estimation employs the spatial-temproal correlation presented in motion vector field to reduce calculating complexity. The high energy regions ofinterframe predicted difference are first detected using hierarchical sliding-window region forming algorithm.Thedetected regions are segmented to DWT regions and DCY regions. This scheme reduce the ringing-effects andblocking-effects compared with traditional DWT or DCf coding algorithms . A quantization model based on HVSspatiality-frequency and time-frequency feature is used in coding algorithm.Simulation result shows acceptableimage quality for CIF resolution at low bit-rate and very low bit-rate. This video coding algorithm is downwardcompatible with H.263,and is suited for low bit-rate video conference application.

为了降低低码率视频编码算法的块效应与环效应,提出了一种基于自适应分区余弦变换/子波变换和重叠运动补偿的视频编码算法。首先给出一种空-时相关自适应运动估计算法,有效降低运算复杂性;然后通过分层游动窗块区域形成算法检测出帧间预测误差场的高能量区域,对大区域进行子波变换和量化,对零散区域进行余弦变换和量化;根据人类视觉系统(HVS)的空-频和时-频特性,给出基于HVS的量化模型,以期在信噪比约束下获得最好的主观测试质量.模拟结果表明,对于CIF格式图像,在低码率和甚低码率下仍能得到满意的图像质量;算法向下兼容ITU的H.263标准,并可以应用于低码率视频会议系统中.

 
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