idft

Research of array synthesis with predetermined beam shapes based on IDFT algorithm

基于IDFT的指定方向图形状的阵列综合研究

A method of realizing digital filter based on DFT and IDFT is introduced .

介绍了一种基于离散傅氏变换（DFT）和逆离散傅氏变换（IDFT）算法的信号滤波技术。

The process of signals production and demodulation is a transform process of IDFT / DFT .

其信号产生与解调的过程为IDFT／DFT的变换过程。

A new algorithm for array synthesis based on inverse Discrete Fourier Transform ( IDFT ) is proposed in the paper .

基于逆离散傅立叶变换（IDFT）算法，提出了一种新的阵列综合算法。

A new self-similar teletraffic generation arithmetic based on FGN and IDFT

一种基于FGN和IDFT的自相似通信量生成算法

The basic Principle and character of OFDM is introduced here , and the system based on DFT / IDFT is analyzed .

介绍了正交频分复用（OFDM）技术的基本原理和特点，并对基于DFT/IDFT的OFDM的系统进行分析。

A number of numerical examples are given and the results are compared with ones obtained from inverse Fourier transform ( IDFT ) .

计算了一系列的实例，并将计算结果与采用离散傅立叶反变换法计算得到的结果进行了比较。

This paper describes a new method which uses IDFT ( Inverse Discrete Fourier Transform ) technique to do time domain near field measurement for antenna .

本文提出了一种利用离散付立叶反变换（IDFT）技术完成天线的时域近场测量的方法。

The spectral envelope is the mel frequency scale and IDFT is used to extract the estimate of sample autocorrelations .

再由语音信号谱包估计抽样自相关，用IDFT提取抽样自相关估计。

Realization High-Speed-Parallel-DFT / IDFT Processor in FPGA

FPGA实现高速全并行DFT/IDFT处理器的设计

A streaming decoding method of RS code which is the seamless combination of Euclidean Algorithm and IDFT , is presented . This scheme has been realized in FPGA .

提出了欧氏算法和IDFT相结合的RS码流式解码方案，并在FPGA芯片上予以实现。

To overcome this problem . All-optical OFDM technology , as a promising solution , has been proposed and demonstrated , where IDFT / DFT is achieved in optical domain .

为了克服这一点，可以通过在光域上实现IDFT/DFT的全光OFDM技术来解决。

Different system configurations are tested and analyzed to optimize the performance , including the system capacity , modulation formats , DFT / IDFT constructions , and the width of the sample pulse .

为了优化系统性能，仿真中对于不同系统配置和参数做了分析，包括系统容量、数据调制方式、DFT/IDFT组成方式和采样脉冲宽度。

This algorithm can significantly reduce the Gibbs phenomenon caused by DFT / IDFT , so that it can improve the OFDM estimation accuracy by optimizing the interpolation accuracy of periphery .

该算法可以大大地减少DFT/IDFT变换时所产生的边缘效应，并且通过优化边缘位置的估计性能来提升整个OFDM信道估计的精确度。

The de-multiplexing reference signal includes ZC sequence conjugate multiplication , forced to zero , IDFT , temporal filtering , time-domain cyclic shift , DFT and zero truncated processing process .

多用户参考信号解复用技术包括ZC序列共轭相乘、迫零处理、IDFT处理、时域滤波、时域循环移位、DFT与去零处理等过程。

The envelopes are on the mel-frequency scale and IDFT is applied to extracting sample autocorrelations . We finally obtain cepstral coefficients ( SEC ) from sampling autocorrelation results .

谱包规定在mel频率级，由IDFT提取抽样自相关估计，我们从抽样自相关的结果最终获得谱包cepstral系数（SEC）。

Base on the mathematical conformation between antenna array distribution to its far field and DFT to IDFT , we discuss how to obtain the array distribution by sampling far field pattern in some space angles based on DFT .

利用天线阵列分布及其相应的阵列方向图与离散傅里叶变换对之间在数学上的同构，对不同空间角度上阵列方向图的采样值进行离散傅里叶变换（DFT）来重新确定天线阵列的激励分布。

This paper proposes a concept of all phase data space , and based on the DFT / IDFT filtering brings about a new type of zero-phase filter , the all phase DFT ( APDFT ) digital filter .

本文提出了全相位数据空间的概念，并基于DFT/IDFT滤波导出了一种新型的零相位滤波器&全相位DFT（APDFT）数字滤波器。

As the key functional modules in the OFDM system , the accuracy of IDFT / DFT has a significant impact on the accuracy of the baseband demodulation performance , especially of the LTE uplink which adopts SC_FDMA .

IDFT/DFT作为OFDM系统中的关键功能模块，其精度对基带解调性能产生着重大的影响，尤其对LTE上行所采用的SCFDMA更是如此。

In this paper , the one-dimensional range resolution and step frequency signal are introduced . The principles of high resolution range profiles of step frequency radar are analyzed which adopts the method of Inverse Discrete Fourier Transform ( IDFT ) signal process to get high range resolution .

首先简单介绍了一维距离像和步进频率信号，分析了步进频率雷达系统中成一维高分辨力距离像的成像原理，即采用离散傅里叶逆变换（ID-FT）信号处理方法实现距离高分辨。

At the same time , after comparing several DAGC algorithms , a set of baseband DAGC algorithm for implement , which makes IDFT / DFT output SNR into the optimum range , is selected to meet the needs of LTE baseband demodulation system requirements .

同时，通过对几种DAGC算法的比较后，得到的一套适用于实现的基带DAGC算法，可以使IDFT/DFT的输出SNR处于最佳范围，从而满足LTE系统基带解调的要求。