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timing_OFDM
- OFDM时域定时测试，分别在高斯白噪声信道和瑞利信道中-OFDM time-domain time test, respectively white Gaussian noise channel and Rayleigh channel
ofdm123
- OFDM系统完美仿真绝对可用包含星座图，时域频域仿真及传输函数-OFDM system is absolutely perfect simulation can include constellation, time domain simulation and frequency domain transfer function
ofdm_matlab
- 此文件为ofdm的matlab仿真程序，详细画出了时域和频域的相关图，以及调制信号的实虚部。-This file is the matlab ofdm simulation program, detailed drawing of the time domain and frequency domain correlation diagram, and the modulation signal real and imaginary parts.
ofdm
- 构建OFDM调制的数字电视信号DVB-T，得到其时域、频谱图，并对其上变频，模拟其发射！-Construction of OFDM modulation digital television signals DVB-T, by the time domain, frequency spectrum, and its up-conversion, analog of its launch!
attachments_2011_01_20
- OFDM modulation produces higher Peak Average Power Ratio (PAPR) whenever the carriers in OFDM symbol add synchronously in the time domain resulting in higher signal power. This high power saturates the power amplifier placed in the RF section res
1
- 多天线正交频分复用(MIMO-OFDM,Multiple-Input and Multiple-Output Orthogonal Frequency Division Multiplex)系统中,精确的符号定时同步可使接收端解调数据时消除载波频率偏移和符号间干扰。而由于MIMO空间信道复杂度较高,使得单天线OFDM系统的同步方法不能直接应用于MIMO-OFDM系统中。提出的两步同步方法首先利用时域导频作为第一步同步进行粗同步,然后利用循环交织前缀作为第二步同步对每一个MIMO-OFDM符号进行
OFDMtransmitwaveform
- This source code describes the OFDM transmitted waveform at the transmitter both in frequency as well as time domain
OFDM-technology-based-on-simulink
- 正交频分复用(OFDM)是第四代移动通信的核心技术,它是实现宽带无线通信和多媒 体业务发展的基础。对OFDM 技术的基本原理，关键技术以及实现进行了研究，并且通过 matlab 中的通信仿真系统simulink 对OFDM 系统进行了模拟和分析，直观和形象地得到了 OFDM 系统在时域和频域的传输性能，得出的结果表明OFDM 系统可以明显地表现出抗多 径效应引起的频率选择性衰落和提高了频谱利用率，这一特性使得它能够在高数据传输速率 的无线信道中发挥优势。-Orthogonal Frequency
matlab-simu-for-OFDM-channel-est
- 介绍了OFDM 技术的基本原理及其系统实现，以其关键技术之一：信道估计为侧重点介绍了信道估计的算法原理，介绍了一种以两次一维估计（时域和频域）代替时频二维信道联合估计的算法，并给出了该算法的Matlab 仿真实现。-Describes the basic principles of OFDM technology and system implementation, one of its key technologies: the channel is estimated to focus in
OFDM-FPGA
- 频率同步是宽带OFDM系统中的关键技术，IEEE 802.11a 采用OFDM技术，利用其前导序列的重复结构，提出了一种分步的粗细频偏捕获与校正算法，同时为了补偿时域同步后的残余相差和适应信道的时变特性，还提出了一种基于频域导频的相位跟踪方案-Frequency synchronization is a key technology in the broadband OFDM systems, IEEE 802.11a uses OFDM technology, the use of the r
ofdm-maltab
- 用MATLAB对OFDM进行仿真，做ofdm仿真很简单，产生一个序列，用ifft转换到时域，加上噪声，再用fft转换到频域，比较下，计算误码-OFDM simulation using MATLAB, do ofdm simulation is very simple to generate a sequence, use ifft into the time domain, plus noise and then converted to the frequency domain fft A
ofdm_mine
- 实现OFDM的发送、信道估计、接收、误码识别等功能。有OFDM时域、频域波形图仿真功能。-The transmission of OFDM channel estimation, the receiver, error recognition and other functions. OFDM time domain, frequency domain waveform simulation capabilities.
Clipping-Noise-in-OFDM-Based
- In this paper, the impact of clipping noise on optical wireless communication (OWC) systems employing orthogonal frequency division multiplexing (OFDM) is investigated. The two existing optical OFDM (O-OFDM) transmission schemes, asymmetrical
OFDM
- 首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提
OFDM-analysis-and-simulation
- 实现了光OFDM模块的各个功能，同时仿真分析了OFDM的载波幅度谱、相位谱、每个载波对应的时域信号、整个时域/频域的OFDM、每个接收符号的分布图。计算了相位差-To achieve the various functions of the optical OFDM module, the simulation analysis of the the the OFDM carrier amplitude spectrum and phase spectrum, and the time doma
OFDM
- OFDM完美出图，信噪比，16QAM星座图，加窗信号时域和频域波形图-Perfect figure, OFDM SNR, 16 qam constellation diagram, add window signal time domain and frequency domain waveform figure
ofdm
- Based on the principle of OFDM system, the paper mainly includes the following aspects: the development of mobile communications, the characteristics of the radio channel, OFDM system theory, the advantages and disadvantages, key technologies, and ad
OFDM
- 首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提
ofdm-(1)
- The inherent robustness of OFDM against multipath effects makes it an excellent choice for situations where multiple transmitters are used simultaneously (to avoid shadowing effects) and a path difference to the receiver exists. One of the ma
ofdm-shiyu-pinyutu
- 基于MATLAB的OFDM原理仿真程序，含时域和频域-OFDM principles based on MATLAB simulation program, including time domain and frequency domain