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- 用途：数字图象处理算法的演示，包括： • 图象的DFT和逆DFT • 图象的FFT和逆FFT • 在图象中加入正弦噪声 • 图象的模板运算实现图象平滑和锐化 • 图象的直方图均衡化 • 图象的对比度拉伸 • 图象的中值滤波 • 图象灰度直方图的显示 • 若干频域滤波器 • 图象的镜像 • 图象的旋转（
FFT_for_ebox
- windows下实现的FFT算法的实现，可以用于语音处理-windows under the FFT algorithm implementation can be used for voice processing
fastfft
- 这是一个关于FFT快速算法的matlab程序，希望在大家学习数字信号处理时能有所帮助。-This is a fast FFT algorithm on the Matlab procedures, We hope that in the study of digital signal processing, can be helped.
GPS_acquisitionConvolution
- GPS 捕获程序,采用FFT搜索算法,搜索1024个码相位.-GPS capture procedures, using FFT algorithm, search phase code 1024.
ppqtest
- 实现了精简的FFT语音压缩 采取了一种新的算法有一定的参考价值-Implementation of speech compress used by simplified FFT algorithm.It is a new one,and useful to you.
New-Compres-Sampling-Algorithm
- GPS信号基带处理方面在IEEE文章 信号跟踪和捕获-GPS signal baseband signal in the IEEE article, track and capture
OFDM-Simulation
- 包含OFDM系统仿真，星状导频仿真，瑞利信道估计以及FFT与DFT算法复杂度比较。集合了12个项目，呵呵。-Contains the OFDM system simulation, the astroid pilot frequency simulation, the Rayleigh channel estimates as well as FFT and the DFT algorithm order of complexity compares. Has gathered 12 proje
paper04
- Presently FFT usage in GPS receivers has been a topic of extensive study and many improved FFT-based acquisition methods with averaging correlation technique also have emerged. Although averaging arithmetic can reduce the instant processing p
paper03
- Presently FFT usage in GPS receivers has been a topic of extensive study and many improved FFT-based acquisition methods with averaging correlation technique also have emerged. Although averaging arithmetic can reduce the instant processing p
JDCHE_and_JDPP_for_TD_SCDMA
- TD-SCDMA系统联合检测中的信道估计、信道估计后处理、信道估计串行干扰消除后处理算法的源代码。其中，信道估计采用频域快速FFT法以减少运算量；后处理采用激活窗检测法，只保留激活用户的多径信息，其余置0，以达到降低干扰及噪声的目的；串行干扰消除可以消除多小区信道估计的干扰，以得到本小区的纯净信道估计结果。-TD-SCDMA system, joint detection of channel estimation, channel estimation and post-processing,
OFDMsystem
- 正交频分复用技术是近年来发展起来的新技术,在高速无线数据传输领域有很大的应用前景。文章在分析和总结相关文献的基础上,介绍了正交频分复用(OFDM)技术的发展历史,讨论了正交频分复用技术的基本原理和实现方法。通过分析表明,在高速无线通信中OFDM对于消除符号间干扰(ISI),降低系统的复杂度等方面具有很大优势。正交频分复用(OFDM)是一种多载波宽带数字调制技术,它能有效地克服传输中的多径干扰和消除码间串扰,适合于高速率的地面信道视频传输。本文就OFDM技术进行了较为详尽的分析,并对OFDM的传输
GPS--FFT
- 在分析基于FFT 算法的GPS 伪码的快速捕获新方法的基础上, 通过传统的时域二维串行码捕获方 法和基于FFT 算法的GPS 伪码的捕获新方法所需要的运算次数的比较, 在理论上论证了新方法伪码捕获速 度得到提高的正确性和可行性。采用System View 软件仿真实验验证了基于FFT 算法的GPS 伪码的快速 捕获新方法理论的正确性, 得出新码捕获方法较传统的码捕获方法得到捕获速度提高的结论, 为GPS 接收机适应高动态环境做了理论探讨。-FFT algorithm in the a
gps11
- 基于采样率变换和循环卷积的GPS信号快速捕获。提出了一种适用于GPS软件接收机的C/A码和多普勒频移的快速捕获算法。该算法结合了采样变换FFT和时域卷积两种方法，提高了捕获速度和多普勒频移的精度。-Based on the sampling rate conversion and fast circular convolution of the GPS signal capture. Presents a GPS receiver software for C/A code and Dopple
fft_ambig
- matlab中使用FFT算法求两个信号的时频二维（互模糊）函数，可以实现信号的时延、多普勒频移联合估计（需要根据实际场景适当修改参数）-oint estimation matlab frequency two-dimensional FFT algorithm seeking the two signals (cross ambiguity) function, signal delay, Doppler shift
FFT
- 这个代码是用来对数字通信系统中FFT变换进行仿真，将时域信号进行FFT变换可得到频谱图形-This code is used to simulate the FFT algorithm in digital communication systems, time-domain signal available spectrum graphics FFT
FFT-based-GPS-acquisition-methods
- 描述了GPS中频信号捕获算法中的快速傅里叶算法-Describes the GPS IF signal acquisition algorithm of Fast Fourier Transform Algorithm
FFT-analyze
- FFT的详细原理分析，且基于DSP处理器的详细C实现算法。值得学习。-Detailed schematic of the FFT analysis, and algorithm based on DSP processor C. Worth learning.
FFT
- FFT是离散傅里叶变换的快速算法，也可用于计算离散傅里叶变换的逆变换。快速傅里叶变换有广泛的应用，如数字信号处理、计算大整数乘法、求解偏微分方程-The FFT is a fast algorithm, can also be used to calculate the discrete Fourier transform of the inverse transform of the discrete Fourier transform. Fast Fourier Transform of a
bd183
- Dual-line interpolation FFT harmonic analysis kaiser windows, Realization of 10 digital audio recognition program A fluid manifold learning algorithm (good use).
FFT算法程序分步详解C程序
- 分步细讲解基2蝶形算法，尽量让你在最短的时间内掌握FFT算法的程序实现。(Step by step to explain the basic 2 butterfly algorithm, try to let you grasp the FFT algorithm in the shortest time.)