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Description: 设信号 ，用 对x(t)采样得x(n)，是否会发生频谱混叠？现利用FFT分析其频谱。
1．编程绘制该信号的波形。
2．若令N=16，编程对x(n)做FFT运算，并绘制其幅频特性曲线。
3．令N=1024，编程对x(n)做FFT运算，并绘制其幅频特性曲线。
4．分析2、3的运算结果。
设计调试报告要求：
1．工作原理简述；
2．设计思路；
3．难点及解决方法；
4．设计、调试结果及分析；
5．程序文本及操作步骤。-based signal used to x (t) in the sample x (n), whether there will be a spectrum aliasing? FFT analysis is the use of their spectrum. 1. Programming mapping of the signal waveform. 2. If so N = 16, the programming of x (n) do FFT, and the mapping of its amplitude-frequency characteristic curve. 3. Order N = 1024, the programming of x (n) do FFT, and the mapping of its amplitude-frequency characteristic curve. 4. Analysis of two, three computational results. Design debugging reporting requirements : 1. Principle outlined; 2. Design; 3. Difficulties and solutions; 4. Design, debugging and analysis of results; 5. Text and operating procedures steps.
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Size: 49152 |
Author: 魏臻 |
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Description: vhdl 16 FFT -vhdl 16 FFT
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Size: 29696 |
Author: 123456 |
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Description: DTMF(双音多频)是用两个特定的单音频组合信号来代表数字信号的一种编码技术。两个单音的频率不同，代表的数字或实现的功能也不同。可采用8种频率代表电话机上的16个按键，10个数字键0~9和6个功能键*、#、A、B、C、D。具体的频率组合见参考书。要求：
(1) 根据键盘输入的符号，利用MATLAB产生对应的DTMF信号；(2) 分别利用FFT算法和Goertzel算法计算该DTMF信号的频谱并画出频谱图；(3) 根据频谱图确定DTMF信号所代表的符号是否和输入的符号一致。
-DTMF (Dual Tone Multi-Frequency) is a single with two specific combination of audio signals to represent a kind of digital signal coding techniques. Two monosyllabic different frequency, on behalf of the numbers, or the realization of the functions are also different. Eight kinds of frequency of use on behalf of telephone on the 16 keys, 10 numeric keys 0 ~ 9 and 6 function keys*,#, A, B, C, D. The frequency of specific composition of reference books. Requirements: (1) According to the keyboard input of symbols, the use of MATLAB have a corresponding DTMF signal (2), respectively, using FFT algorithm and the Goertzel algorithm DTMF signal spectrum and frequency spectrum draw (3) According to DTMF signal frequency spectrum to determine represented by symbols and input symbols unanimously.
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Size: 15360 |
Author: wyyy |
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Description: SAR雷达基本信号处理算法，包含fft,crange等16个文件，对初学者对SAR雷达的理解有很大的帮助-SAR basic radar signal processing algorithms, including fft, crange such as 16 documents, for beginners to understand the SAR radar very helpful
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Size: 33792 |
Author: 咖啡 |
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Description: OFDMA, Orthogonal Frequency Division Multiple Access is a broad band communication method. Here channel estimation is more crucial. Based on the FFT size used for OFDM transmission method that many number of channel co-efficients are to be estimated and received signals are to be equalized using this co-efficients. Various methods trying to improve the performance and fastness are proposed. As part of master thesis various methods have be studied and evaluated using the WiMAX 802.16 system.
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Size: 2159616 |
Author: muruga |
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Description: 16位浮点FFT算法的VHDL实现有测试文件！-16-bit floating-point FFT algorithm VHDL realization of a test file!
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Size: 16425984 |
Author: 殷桃 |
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Description: 这个程序除了接收机同步、信道编码没有加入外，基本上反映了一个OFDM系统的特性：
1. qpsk/16qam/64qam映射、解映射
2. OFDM调制解调（循环前缀，FFT等）
3. 非整数采样时刻多径时延的多径信道
4. Rayleigh或者Rician多径信道
5. 信道的连续时变（非block fading）
6. 线性插值信道估计
7. FFT变换域插值信道估计-In addition to this program receiver synchronization, channel coding have not joined, the basically reflect the characteristics of an OFDM system: 1. Qpsk/16qam/64qam mapping, mapping solution 2. OFDM modulation and demodulation (cyclic prefix, FFT, etc.) 3. Non- integer sampling instant multi-path delay of multi-path channel 4. Rayleigh or Rician multipath channel 5. a continuous time-varying channel (non-block fading) 6. linear interpolation channel estimation 7. FFT transform domain interpolation channel estimation
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Size: 1024 |
Author: 施炯 |
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Description: 16点基4—FFT算法编程。输入16点的序列，采用基4-fft方法计算其快速傅里叶变换。-16 points-based 4-FFT algorithm for programming. Enter the 16-point sequence, with the base 4-fft method for calculating the fast Fourier transform.
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Size: 1024 |
Author: 赵明敏 |
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Description: 这是个压缩文件，里面有matlab程序可以直接运行，作用是实现该程序完成16个脉冲信号的脉压、MTI/MTD ，另外有C程序，作用主要是在visualdsp++环境中实现上述功能，但是要用到matlab产生的数据。最后还有个matlab比较程序.另外还有实现FFT的汇编语言程序。-This is a compressed file, which has matlab program can be run directly, is to implement the program completed 16 pulses of pulse pressure, MTI/MTD, another C program, the role mainly in the visualdsp++ environment to achieve the above functions, but to use to the matlab-generated data. Finally, there is a matlab comparison procedures. In addition to assembly language to achieve the FFT program.
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Size: 481280 |
Author: 张腾 |
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Description: 16点的FFT蝶形运算，用于快速傅里叶变换并行实现，基于verilog语言编写，matlab仿真验证-a method based on 16-point fft butterfly,used to make fast fourier transform,language is verilog.
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Size: 1024 |
Author: wanghao |
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Description: 下面是找到了基2 FFT蝴蝶旋转因子的Matlab代码。代码计算的 A 相角，在图1（c）和图2（c）所示，旋转因子的因素。我建议你开始8点DIT的FFT图1（a）通过运行代码然后运行图2中的代码为16点DIF FFT（一）。-Below is the Matlab code to find radix-2 FFT butterfly twiddle factors. The code computes the A phase angle factors that are used in the twiddle factors as shown in Figure 1(c) and Figure 2(c). I suggest you start by running the code for the 8-point DIT FFT in Figure 1(a) and then run the code for the 16-point DIF FFT in Figure 2(a).
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Size: 1024 |
Author: 张成 |
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Description: 编写16点基4-FFT算法的MATLAB程序（studentname.m文件）。
产生16点输入序列x，算出16点频谱序列X，用stem(X)显示频谱图形。-4-FFT algorithm
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Size: 3072 |
Author: hankexin |
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Description: 16点 基4-fft算法matlab实现-16:00 base 4-fft algorithm matlab
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Size: 1024 |
Author: 祥林 |
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Description: perfect 16-FFT matlab / C reference-16-FFT matlab/C reference
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Size: 1024 |
Author: vicki |
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Description: 通信系统与仿真作业：
1）设计π/4-DPSK或16-QAM调制器仿真程序， 画出时域波形、 正交分量、同相分量波形，眼图，散点图等。
2）利用MATLAB进行DPSK在高斯信道下的BER性能仿真，并将结果与PSK性能进行比较。
3）已知 OFDM的数据传输速率为19.2Kbps， OFDM 符号长度为320，保护间隔为32点，子载波数为128，IFFT/FFT点数为256，载波频率320KHz，调制方案采用QPSK，仿真其在高斯信道下的BER性能。
-Communication systems and simulation tasks: 1) Design π/4-DPSK or 16-QAM modulator simulation program, draw time-domain waveform, quadrature component, in-phase component waveforms, eye diagrams, scatter plots, etc. 2) the use of MATLAB for DPSK in AWGN channel BER performance simulation, and the results are compared with PSK performance. 3) the known OFDM data transmission rate of 19.2Kbps, OFDM symbol length is 320, the guard interval is 32 points, the number of sub-carriers 128, IFFT/FFT points is 256, the carrier frequency is 320KHz, using the modulation scheme QPSK, simulation of the in Gaussian channel BER performance.
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Size: 268288 |
Author: wander |
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Description: Implement FFT and IFFT 16 point using Matlab Simulink.
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Size: 52224 |
Author: Ryan |
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Description: fft 16 point matlab code
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Size: 2048 |
Author: bakuryu |
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Description: 纯C实现的FFT,与matlab计算结果完全一样。点数必须为8,16,32,64,128,256- C implementation of FFT, and matlab calculation results are exactly the same. 8,16,32,64,128,256 points must be...
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Size: 24576 |
Author: 王斌 |
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Description: The following Matlab project contains the source code and Matlab examples used for 16 point radix 2 dif fft . Contain the computation of 16 point DIF FFT in each stages and reordering process.
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Size: 1024 |
Author: aliwahby1993
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