Location:
Search - fft.r
Search list
Description: VHDL的基本数学运算库,非常好用-VHDL basic arithmetic library, a very handy! !
Platform: |
Size: 232448 |
Author: |
Hits:
Description: 此为在虚拟仪器中对等间隔的量数据进行滤波a-b-r滤波方法-here for the virtual instruments such as spacing of the data filtering a-b-r filtering method
Platform: |
Size: 1024 |
Author: GaleWing |
Hits:
Description: 一个用VC++实现傅立叶变换的程序,可以-VC with a Fourier transform procedure, a good look
Platform: |
Size: 1024 |
Author: |
Hits:
Description: This award winning library is a C library for "computing the Discrete Fourier Transform (DFT) in one or more dimensions, of both real and complex data, and of arbitrary input size." -This award winning library is a C library az r "computing the Discrete Fourier Transform (D FT) in one or more dimensions, of both real and complex data. and of arbitrary input size. "
Platform: |
Size: 2736128 |
Author: 王云 |
Hits:
Description: 该论文阐述了用于硬件信号处理的基于4基数12点快速傅立叶变换的VHDL核的设计过程。作者：Vite-Frias Jose Alberto、Romero-Troncoso Rene de Jesus、Ordaz-Moreno -The paper described the hardware for signal processing based on the 4 base 12 points Fast Fourier Transform Nuclear VHDL design process. Authors: Vite-Frias Jose Alberto, Romero-Troncoso Rene de Jesus, Ordaz-Moreno
Platform: |
Size: 440320 |
Author: Rae |
Hits:
Description: 利用FFT進行心電訊號除噪並截取R波特徵點-Use of FFT to the heart in addition to its telecommunications interception of R-wave noise and feature points
Platform: |
Size: 39936 |
Author: jsc66 |
Hits:
Description: OFDM程序，这么安排矩阵的目的是为了构造共轭对称矩阵
共轭对称矩阵的特点是 在ifft/fft的矢量上 N点的矢量
在0，N/2点必须是实数 一般选为0
1至N/2点 与 （N/2）+1至N-1点关于N/2共轭对称- BPSK simulation using a carrier cosine wave with ISI
clc
close all
clear all
figure(1)
n=160
for i=1:n
data(i)= 2*round(rand)-1
end
create modulated BPSK signal
first expand the bit stream
exdata=[]
for i=1:length(data)
for rep=1:5
exdata= [exdata data(i)]
end
end
ts=.1
t=1:ts:80.9
carrier=cos(pi*t)
multiply expanded bitstream by cosine wave with carrier frequency
this is the BPSK that is to be transmitted over the channel
bpsk=carrier.*exdata
bpsk=[bpsk(length(bpsk)-1) bpsk(length(bpsk)) bpsk]
plot(bpsk)
generating the noise
p=rand(1,800)*2*pi
p=rand*2*pi
snr=10
r=sqrt(-1*(1/snr*log(1- rand)))
no = 5*(r.* exp(j*p))
no = (r.* exp(j*p))
value of alpha
al=rand+j*rand
al=1
Spreading channel with the alpha as the variable
for k=5:5:795
for l = 1:5
al=round(rand)+j*round(rand)
rec(k+l)=bpsk(k+l)+al*bpsk(k-5+l)
end
end
rxdata=rec+ no
begin demodulation
first multiply recie
Platform: |
Size: 6146048 |
Author: 卞敏捷 |
Hits:
Description: 计算一个地震序列的F-K谱。也可以直接用了。比较有条理。-compute FK spectrum of a seismic gather
Platform: |
Size: 1024 |
Author: 马龙 |
Hits:
Description: Get_R_noise_Finish.m是加噪声的回波序列直接做的fft，带限，ifft然后计算R值。-Get_R_noise_Finish.m is a direct echo plus noise to do fft, band-limited, ifft then calculate the R value.
Platform: |
Size: 1024 |
Author: 张俊娥 |
Hits:
Description: ua University, in 2002 publi
this document, including the Mont
A program of curve fitting based
Bayesian Filter. Bayesian (Bayesi
a target tracking system MATLAB s
cubic spline curve fitting This i
book is widely used in engineerin
this study is extended Kalman Fil
particle filter algorithm code, t
use AR model for time series pred
principal component analysis algo
HMM, C language, it is important
spectrum analysis techniques to s
digital watermarking technology p
mean-shift method for the example
chaotic sequence of phase space r
Serializing objects using CArchiv
C compile some of the most optimi
The source code of FFT,is a good
Mailto US | Studio | Copyright Complaints
Platform: |
Size: 712704 |
Author: wibisono |
Hits:
Description: 用NIOS2核建的FFT工程，能够对输入的数据进行FFT或IFFT变换。-FFT with NIOS2 nuclear construction projects, to input data on FFT or IFFT transform.
Platform: |
Size: 45225984 |
Author: 米多 |
Hits:
Description: C. S. BURRUS and T. W. PARKS: DFT/FFT AND CONVOLUTION
ALGORITHMS: THEORY AND IMPLEMENTATION
JOHN R. TREICHLER, C. RICHARD JOHNSON, JR., and MICHAEL G.
LARIMORE: THEORY AND DESIGN OF ADAPTIVE FILTERS
T. W. PARKS and C. S. BURRUS: DIGITAL FILTER DESIGN
RULPH CHASSAING and DARRELL W. HORNING: DIGITAL SIGNAL
PROCESSING WITH THE TMS320C25
RULPH CHASSAING: DIGITAL SIGNAL PROCESSING WITH C AND
THE TMS320C30
RULPH CHASSAING: DIGITAL SIGNAL PROCESSING LABORATORY
EXPERIMENTS USING C AND THE TMS320C31 DSK
RULPH CHASSAING: DSP APPLICATIONS USING C AND THE
TMS320C6x DSK
Platform: |
Size: 3528704 |
Author: Barish Chandran |
Hits:
Description: 基于fft的数字水印，分别对RBG三个通道重复嵌水印，每个通道分别对fft变换域中幅度谱以圆方式，每个圆上对称的四个点重复嵌1bit水印，然后以r为步进，选更大的圆嵌入接下去的水印信息，该方法有比较好的鲁棒性-Fft-based digital watermarking were embedded watermark repeated RBG three channels, each channel separately the fft transform domain amplitude spectrum round, four points for each round symmetrical repeat embedded 1bit watermark, then r steps into the election next larger circle embedded watermark information, the method has better robustness
Platform: |
Size: 5401600 |
Author: HQR |
Hits:
Description: 去斜率（strech）参考信号与回波信号混频后得到中频输出信号S(t)=Aexp(j*2*pi*f0*t+phase)
其中f0与回波延时的关系为：
f0=k*delay_t
K为线性调频斜率，delay_t为回波延时
将s(t)采样，FFT变换即可得到目标距离与频谱的关系。
Strech 信号测距
输入混频后的中频信号（图一），经采样及FFT变换得到频谱（图二）
再根据频谱与距离的关系式R=Tcf/2B显示出距离(图三)
-Go slope (strech) obtained after the reference signal and the echo signal mixer IF output signal S (t) = Aexp (j* 2* pi* f0* t+phase) f0 and echo delay relationship: f0 = k* delay_t K chirp slope, delay_t the echo delay sampling s (t), the FFT transform to the target distance spectrum of relations. Strech signal ranging input mixer IF signal (Figure 1), sampling and FFT transform spectrum (Figure 2) according the the spectrum distance relationship R = Tcf/2B shows the distance (Figure 3)
Platform: |
Size: 24576 |
Author: 江河 |
Hits: