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可以仿真一个OFDM的传输.其中imagetx.m生成OFDM信号,保存为一个WAM文件.可以支持声卡播放.imagerx.m对保存的WAV文件解码.-OFDM transmission. Which imagetx.m OFDM signal generation, Save as a WAM document. audio players can support. imagerx.m to preserve the WAV files decoder .
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This simulation scr ipt set allows for an OFDM transmission to be
simulated. Imagetx.m generates the OFDM signal, saving it as a
windows WAV file. This allows the OFDM signal to be played out a sound
card and recorded back. Imagerx.m decodes
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峰值抵消算法的基本思想是:在OFDM信号上叠加一个由一系列加权参考函数组成的峰值抵消信号,通过抵消函数的选取以及权值计算,使得抵消信号尽可能消除超过门限的信号幅值。常见的参考函数分为脉冲函数和其他窗函数两类。- T. May, H. Rohling. Reducing the peak-to-average power ratio in OFDM radio transmission systems. IEEE Vehicular Technology Conference (VTC), Ma
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WLAN仿真-发送机
wlan No Comments
设置完系统参数后,开始产生发送数据。
1. 产生随机的发送bit(tx_bits),这里不考虑信道编码。
2. QAM映射
3. 将数据映射到不同载波,形成OFDM符号
4. 产生pilot,并将pilot插入OFDM符号中
5. 加入dc和guard子载波
6. 进行ifft,将频域信号变到时域,并加入循环前缀
7. 对信号进行overlap window
8. 在时域产生short preamb
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摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向,交频分复用
OFDM)是一种无线环境下的高速传输技术,它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理,然后在计算机上用M atlal〕对其性能进行了仿真,仿真中将OFDM与传统的单载波
调制方式—i1,交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较,最后分析了一者的仿真结果.
-Abstract: Based
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正交频分复用是一种多载波宽带数字调制技术。相比一般的数字通信系统,
它具有频带利用率高和抗多径干扰能力强等优点,因而适合于高速率的无线通信系统。-
OFDM Simulator
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MIMO OFDM Simulator:
OFDM.m: OFDM Simulator (out
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OFDM信号的编码译码仿真,英文说明更详细。-This simulation scr ipt set allows for an OFDM transmission to be
simulated. Imagetx.m generates the OFDM signal, saving it as a
windows WAV file. This allows the OFDM signal to be played out a sound
card and recorded b
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This simulation scr ipt set allows for an OFDM transmission to be
simulated. Imagetx.m generates the OFDM signal, saving it as a
windows WAV file. This allows the OFDM signal to be played out a sound
card and recorded back. Imagerx.m decodes
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这是OFDM接收的程序,是一本外国专著书后面附带的,对初学者很有点用-This is the OFDM sending procedure is a behind the fringe of foreign experts, books, and very little use for beginners
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OFDM系统仿真,包含了发射、信道估计、接受等完整的OFDM系统仿真-his simulation scr ipt set allows for an OFDM transmission to be simulated. Imagetx.m generates the OFDM signal, saving it as a windows WAV file. This allows the OFDM signal to be played out a sound card and recorde
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I would like to find theoretical 802.11g BER performances in the case of a
transmission under rayleigh channel.
I found theoretical M-QAM curves, but I don t know how to compute BER
curves for OFDM transmission due to the use of several sub-car
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多输入多输出正交分频多工模拟器。
正交分频多工:OFDM模拟器(外层函数)
create_channel:产生一个瑞利衰落信道复用,解的天线配置、正交分频多工结构、power-delay档案。
svd_decompose_channel:既然全网络知识是假设,在并行传输奇异值模式。这个函数分解这些频道模式。
BitLoad:适用bit-loading算法来实现预期的钻头和能量
-MIMO OFDM
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he m-file helps you o understand the generatio,transmission and reception of an ofdm signal, and also shows the effect of the channel noise and the HPA on the ofdm signal.
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This simulation scr ipt set allows for an OFDM transmission to be
simulated. Imagetx.m generates the OFDM signal, saving it as a
windows WAV file. This allows the OFDM signal to be played out a sound
card and recorded back. Imagerx.m decodes the
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