助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   运算复杂性 在 无线电电子学 分类中 的翻译结果: 查询用时:0.46秒
图标索引 在分类学科中查询
所有学科
无线电电子学
电信技术
自动化技术
计算机软件及计算机应用
数学
更多类别查询

图标索引 历史查询
 

运算复杂性
相关语句
  calculating complexity
    SSM instead of FFT makes the calculating complexity of OQAM system drop greatly.
    SSM取代FFT,使系统运算复杂性显著下降。
短句来源
  “运算复杂性”译为未确定词的双语例句
    The proper algorithm of evaluating FIR filter and DCT provides further reduction of the computation complexity which drops to 35.6 percent of that of Hirosaki's scheme.
    文中给出的FIR滤波和DCT算法与Hirosaki提出的方案相比较,运算复杂性降为35.6%。
短句来源
    The main achievements includes:1) A new fast algorithm for computing prime length DCT using cyclicconvolutions is proposed. The algorithm possesses regular implementationstructure and lower operational complexity compared with existing algorithms. It is suited for both software and hardware implementation.
    取得的主要进展有:1)提出了一种用循环卷积实现的素长度DCT快速新算法,算法具有规则的实现结构,与现有算法相比具有更低的运算复杂性,算法不仅适用于软件实现,而且适用于硬件实现。
短句来源
查询“运算复杂性”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  calculating complexity
We are calculating complexity in a formal way, and with this avoiding the problem with ad-hoc heuristics.
      


The orthogonally multiplexed QAM(OQAM) system allows transmission speed very close to the Nyquist rate with little sensitivity to the delay and amplitude distortions introduced by the transmission medium.Its circuit complexity can be largely overcome by digital signal processing (DSP).In this paper,the implementation of groupband data modem using OQAM technique is presented,where OQAM system is realized by means of cascading a discrete cosine transformer (DCT) and a weighting network.The proper algorithm of...

The orthogonally multiplexed QAM(OQAM) system allows transmission speed very close to the Nyquist rate with little sensitivity to the delay and amplitude distortions introduced by the transmission medium.Its circuit complexity can be largely overcome by digital signal processing (DSP).In this paper,the implementation of groupband data modem using OQAM technique is presented,where OQAM system is realized by means of cascading a discrete cosine transformer (DCT) and a weighting network.The proper algorithm of evaluating FIR filter and DCT provides further reduction of the computation complexity which drops to 35.6 percent of that of Hirosaki's scheme.

正交复用QAM(OQAM)系统传输效率可以接近奈奎斯特速率,并对传输媒介引起的时延和幅度失真不敏感。应用数字信号处理技术可以大大减少其电路实现的复杂性。本文提出用离散余弦变换(DCT)级联一权重网络实现OQAM群带数据调制解调器。文中给出的FIR滤波和DCT算法与Hirosaki提出的方案相比较,运算复杂性降为35.6%。

Conventionally, OQAM system is digitally implemented by cascading FFT and polyphase network. In this paper, an equivalent OQAM complex system with 2f0 spacing between adjacent carrier frequencies (f0 is the signal baud rate of every subchannel) is proposed and digitally implemented by using spread spectrum modulation (SSM) with sample values Wk2N=exp(j2πk2/N). SSM instead of FFT makes the calculating complexity of OQAM system drop greatly. The computer simulation result shows that the performance...

Conventionally, OQAM system is digitally implemented by cascading FFT and polyphase network. In this paper, an equivalent OQAM complex system with 2f0 spacing between adjacent carrier frequencies (f0 is the signal baud rate of every subchannel) is proposed and digitally implemented by using spread spectrum modulation (SSM) with sample values Wk2N=exp(j2πk2/N). SSM instead of FFT makes the calculating complexity of OQAM system drop greatly. The computer simulation result shows that the performance against to noise is improved by introducing SSM into OQAM.

OQAM系统数字化实现一般采用FFT加多相网络。提出了一种相邻载频间隔2f0的OQAM等效复系统,并采用样值为Wk2N=exp{j2πk2/N}的扩谱调制器(SSM)数字实现。SSM取代FFT,使系统运算复杂性显著下降。计算机模拟结果表明,采用SSM实现OQAM,可提高系统抗干扰能力。

The design method of a high speed real-time FFT processor using FPGA and ASIC technology is presented. It is based on the R4 DIT algorithm, Ping-pong RAM design and pipeline structure between stages. Several techniques, such as serial to parallel transform in the data-path, Synchronization of operating data, reverse address sequence, dual address generating etc, are employed to reduce the computing complexity of FFT Radix 4 algorithm. The main purpose of using these techniques is to accelerate the high speed...

The design method of a high speed real-time FFT processor using FPGA and ASIC technology is presented. It is based on the R4 DIT algorithm, Ping-pong RAM design and pipeline structure between stages. Several techniques, such as serial to parallel transform in the data-path, Synchronization of operating data, reverse address sequence, dual address generating etc, are employed to reduce the computing complexity of FFT Radix 4 algorithm. The main purpose of using these techniques is to accelerate the high speed FFT calculation as fast as possible. As an example, the high speed FFT calculation for 1024 points, 16 bits width, fixed-point, complex data is considered. To make peripheral interfaces to be handled easily by the user, peripheral data, status and control lines have been simplified and those complex control circuits are re-located to the interior of the chip.

本文讨论了采用FPGA和ASIC硬件实现高速实时FFT处理器的设计方案,作者在这种高速FFT设计时选择的特点基于Radix 4 DIT算法、采用乒乓RAM的设计思路以及级与级间采用流水结构。另外由于FFT基4运算的复杂性,所以在设计基4运算单元、数据通道中串并转换、运算数据的拉齐、颠倒位序、双地址发生等方面也有一些特点。整体上考虑是:尽可能地能够进行高速的FFT运算,本文针对1024点、16 bits位长、定点数、复数点进行运算;考虑到芯片外围接口的问题,希望外围能够尽量方便用户使用,所以在外围数据、状态和控制线上比较精简,从而把复杂的控制部分转移到芯片内部实现。

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关运算复杂性的内容
在知识搜索中查有关运算复杂性的内容
在数字搜索中查有关运算复杂性的内容
在概念知识元中查有关运算复杂性的内容
在学术趋势中查有关运算复杂性的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社