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ofdm
- 用matlab 实现ofdm,输入的是长度为256的随机序列,其中用到了opsk调制,ifft和fft变换
ofdm_simulator
- MIMO-OFDM仿真 自适应算法包括chow算法和camoello算法,调制手段有4-QAM,64-QAM,256-QAM
OFDM_TRail
- OFDM系统,子载波数目1024,前缀数目256,循环数目256,加入了高斯白噪声-OFDM system, the number of subcarriers 1024, the number prefix 256, the cycle number of 256, by adding a Gaussian white noise
slmpapr251
- slm method for papr ofdm.10000,working.for d=2,3,N=512 256 1024.slm method for papr ofdm.10000,working.
top_module
- OFDM Gaurd Detector, Symbol length = 1024 & Gaurad Length = 256, and test bench written in verilog!
OFDM_send_matlab
- matlab发送端程序,256位FFT,16QAM-OFDM,最后有时域和频域图形显示-matlab sender program, 256 FFT, 16QAM-OFDM, the last times and frequency domain graphics
OFDM_rece_matlab
- 一个OFDM符号128个有效符号,插入128个虚拟子载波 符号率(即有效数据率)fsymbol,而发送速率(需要包括虚拟子载波)2fsymbol 输入的数据需要2倍的发送数据率,以便进行内插,实现位定时跟踪,即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 , Guard Interval点 =Ng*2=64 - a OFDM symbol 128 effective s
tu422
- 不同子载波数N的OFDM系统的PAPR性能也不同,子载波数N越大,其PAPR性能越差。给出了N=64、128、256时的常规OFDM系统的PAPR仿真曲线,同时给出了V=4时的相应子载波数的PTS-OFDM系统的PAPR性能曲线图。-N, the number of different sub-carrier OFDM PAPR performance of the system is different, the greater the number of subcarriers N, the
OFDM_system
- 自己编写的256点OFDM调制解调系统,可以直接运行-I have written 256 OFDM modulation and demodulation system can be run directly
ofdm1
- 由MATLAB程序产生2Gbi/s的基带OFDM信号先将2^15-1个伪随机序列映射到256个进行4QAM编码调制的子载波上,编码后的OFDM符号再经过IFFT变换将其转换为时域波形,接着添加6.4ns的循环前缀(CP),产生的数据波形再装载到Tektronix任意波形发生器(AWG)中,产生2Gbit/s的基带OFDM信号。基带OFDM信号频谱示意图如图3所示。其中包括256个OFDM子载波256个子载波中200个子信道用来传送数据信号,27个高频和28个低频子信道为了过采样的需要置0,OFD
ccdf_ofdm
- OFDM信号在N=64, 128, 256,512,1024.时的CCDF值-CCDFs of OFDM signals with N=64, 128, 256, 512, and 1024.
OFDM
- 一个简单的OFDM系统,无信道编码,QPSK,256子载波,无同步,硬判决,自编FFT和卷积-a simple OFDM system
CCDF_OFDMA.m.tar
- CCDF of OFDM signal with no PAPR reduction technique. Number of total subcarriers used is 256 by default.
baseband-signal_ofdm
- 一个OFDM 基带信号,采用256点IFFT,子载波采用8PSK映射,加保护段,调制信号采用“削顶”方法降低PAPR,FIR 半带滤波,最后输出时域信号/频域响应。包含各级的视频域比较-An OFDM baseband signal, using the 256-point IFFT, the sub-carrier using 8PSK mapping, plus the protection section, the modulated signal " cut top"
all_progs
- papr to differenrt number of subcarrier: we put N = 256,512,1024 and show the output ofp ccdf with papr when we use QPSK modulation. The PAPR ratio is a measure of the dynamic range in OFDM signals. Thus high PAPR induces a high dynamic range w
v06_03_dem_2up_arrange
- 一个OFDM符号128个有效符号,插入128个虚拟子载波 符号率(即有效数据率)fsymbol,而发送速率(需要包括虚拟子载波)2fsymbol 输入的数据需要2倍的发送数据率,以便进行内插,实现位定时跟踪,即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 , Guard Interval点 =Ng*2=64 -128 of an OFDM symbol of a val
attachments
- 256 OFDM Transmitter and receiver in simulation in one program
homework2
- 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
my_test256_QAM
- OFDM system by using 256-QAM modulation
plot_CCDF
- 程序plot_CCDF.m用来显示当N=64,128,256,512,1024时,OFDM信号的理论CCDF和仿真CCDF。该程序调用PAPR.m来计算PAPR,调用mapper.m来实现PSK/QAM调制。-Program plot_CCDF.m to display when N = 64,128,256,512,1024, the theory and simulation CCDF CCDF OFDM signal. The program calls PAPR.m to calcula