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Description: 一个OFDM信号产生以及解调程序，用matlab编写-OFDMmatlab
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Size: 1024 |
Author: 罗平 |
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Description: OFDM仿真
参数：
％ 子载波数 128
％ 位数/ 符号 2
％ 符号数/ 载波 1000
％ 训练符号数 0
％ 循环前缀长度 8 (1/16)*T
％ 调制方式 4-QAM
％ 多径信道数 3
％ IFFT Size 128
％ 信道最大时延 2
-OFDM simulation parameters : % subcarriers median number of 128%/2% Symbol Symbol/Carrier Training 1000% 0% Symbol few cyclic prefix length 8 (1/16)* T% modulation 4-QAM% multi-path channel number 3% 128% Size IFFT letter Maximum delay 2
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Size: 19456 |
Author: 高源 |
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Description: 这个是４ＱＡＭ调制的ＯＦＤＭ完整的程序，
大家可以下了看看，希望对你有用！-OFDM modulation integrity of the process, we can see where the hope that useful to you!
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Size: 3072 |
Author: 陆江 |
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Description: ＯＦＤＭ程序 波形如下
子载波数 128
％ 位数/ 符号 2
％ 符号数/ 载波 100
％ 训练符号数 0
％ 循环前缀长度 8 (1/16)*T
％ 调制方式 4-QAM
％ 多径信道数 3
％IFFT Size 128
％ 信道最大时延 2-OFDM waveform procedures following subcarriers median number of 128%/2% Symbol Symbol/Carrier 100% Training a few symbols 0% cyclic prefix length 8 (1/16)* T% modulation 4-QAM% multi-path channel number 3% IFFT Size 128% maximum delay Channel 2
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Size: 4096 |
Author: 唐成玉 |
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Description: 这里面有两个程序，两个都是采用4QAM调制。不过个人觉得第一个更容易懂，因为写的很有条理。我改的那个程序就是根据这个来的。
不过在这里面有个问题就是信道系数只能是由高到低，大家可以试试，改成[0.227 0.46 0.688 0.46 0.227]这个是老师给我的仿真中常用的信道系数，这个成为归一化信道，就是系数平方和为1.
第二个程序没有涉及到信道系数，但是这个程序当中，在128个子载波中，前后有32个空载波，这个在OFDM中也是经常用的，这样可以降低误码率。
-There are two procedures, both of them are used 4QAM modulation. But personally feel that a more easily understood, since they were written very structured. I changed that procedure is on the basis of the past. But in this there is a problem inside the channel coefficient is the only high to low, everyone can try, replaced by [0.227 0.46 0.688 0.46 0.227] This is the teacher for giving me frequently used in the simulation of channel coefficients, this has become normalized channel is the coefficient of the square and 1. The second procedure does not involve channel coefficient, but this process which, in the 128 sub-carrier, the before and after the air carrier has 32, this in OFDM is also frequently used, as this will reduce the misuse of rate.
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Size: 19456 |
Author: 徐振华 |
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Description: OFDM64QAM的模块，simulink搭建的，希望对大家有用-OFDM64QAM modules, simulink structures, and I hope useful for everyone
Platform: |
Size: 10240 |
Author: 骄阳 |
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Description: OFDM系统仿真程序, 基于matlab平台，是采用4QAM调制。-OFDM system simulation program, based on matlab platform is 4QAM modulation.
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Size: 4096 |
Author: 李焕华 |
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Description: matlab 下OFDM仿真，用4QAM调制，从一个国外网站上下载，大家可以参考一下-matlab simulation of OFDM with 4QAM modulation, from a foreign website, we can refer to
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Size: 10240 |
Author: Alex |
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Description: OFDM仿真程序，采用4QAM星座映射方式-OFDM simulation program, using Constellation Mapping 4QAM
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Size: 1024 |
Author: 刘喆 |
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Description: 4QAM调制的OFDM多径传输，对不同的信道估计算法的误码性能进行比较-OFDM modulation 4QAM multi-path transmission, for different channel estimation algorithm to compare the BER performance
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Size: 3072 |
Author: 闫哲 |
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Description: matlab实现的OFDM运用于ROF光纤无线通信系统的仿真，用的是4QAM调制，LS信道估计，还包括Optisystem的仿真，是毕设的仿真，非常珍贵。-matlab achieve ROF optical fiber used in the OFDM wireless communication system simulation, using 4QAM modulation, LS channel estimation, the simulation also includes Optisystem is a complete set of simulation, very precious.
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Size: 25600 |
Author: Ruby |
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Description: OFDM信号在光纤无线通信系统中传输性能的研究，包括不同频率的4QAM、16QAM，是毕设资料，非常珍贵。-OFDM signal in optical wireless communication system transmission performance in the study, including different frequencies 4QAM, 16QAM, complete set of information is very valuable.
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Size: 105472 |
Author: Ruby |
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Description: OFDM 4QAM simulation using Matlab
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Size: 59392 |
Author: Hung Dai Nguyen |
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Description: 自己编写的，盲源分离算法仿真分析系统（图形界面）又名：独立分量分析；算法种类：自然梯度算法、投影自然梯度算法、FastICA、SOBI、NJD非正交联合对角化。信号种类：
MASK：2ASK，4ASK，8ASK
MPSK：2PSK、4PSK、8PSK
MFSK：2FSK、4FSK、8FSK 分连续相位CPFSK和离散相位DPFSK两种
MQAM：16QAM、32QAM、64QAM、128QAM
OFDM：子载波数可任意选定，映射方式有BPSK、QPSK、4QAM、16QAM、32QAM、64QAM
Sign：符号函数
Noise：噪声-Blind Source Separation（BSS） algorithm simulation and analysis system (graphical interface) algorithm types: natural gradient algorithm, the projection of natural gradient algorithm, FastICA, SOBI, NJD non-orthogonal joint diagonalization. Signals: MASK: 2ASK, 4ASK, 8ASK MPSK: 2PSK, 4PSK, 8PSK MFSK: 2FSK, 4FSK, 8FSK sub-CPFSK continuous phase and discrete phase DPFSK two kinds of MQAM: 16QAM, 32QAM, 64QAM, 128QAM OFDM: the number of sub-carriers can be arbitrarily selected, mapping methods are BPSK, QPSK, 4QAM, 16QAM, 32QAM, 64QAM Sign: sign function Noise: Noise
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Size: 155648 |
Author: 刘卫菠 |
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Description: 数字通信调制信号信号模拟系统
信号种类：
MASK：2ASK，4ASK，8ASK
MPSK：2PSK、4PSK、8PSK
MFSK：2FSK、4FSK、8FSK 分连续相位CPFSK和离散相位DPFSK两种
MQAM：16QAM、32QAM、64QAM、128QAM
OFDM：子载波数可任意选定，映射方式有BPSK、QPSK、4QAM、16QAM、32QAM、64QAM
-Digital communication system signal-signal analog modulation signals Category: MASK: 2ASK, 4ASK, 8ASK MPSK: 2PSK, 4PSK, 8PSK MFSK: 2FSK, 4FSK, 8FSK sub-CPFSK continuous phase and discrete phase DPFSK two kinds of MQAM: 16QAM, 32QAM, 64QAM, 128QAM OFDM: the number of sub-carriers can be arbitrarily selected, and mapping methods are BPSK, QPSK, 4QAM, 16QAM, 32QAM, 64QAM
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Size: 94208 |
Author: 刘卫菠 |
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Description: 这里面有两个程序，两个都是采用4QAM调制。不过个人觉得第一个更容易懂，因为写的很有条理。我改的那个程序就是根据这个来的。
不过在这里面有个问题就是信道系数只能是由高到低，大家可以试试，改成[0.227 0.46 0.688 0.46 0.227]这个是老师给我的仿真中常用的信道系数，这个成为归一化信道，就是系数平方和为1.
第二个程序没有涉及到信道系数，但是这个程序当中，在128个子载波中，前后有32个空载波，这个在OFDM中也是经常用的，这样可以降低误码率。
-And there are two programs, two are based on 4QAM modulation. But personally feel that the first is easier, because the writing is organized. I changed that procedure is based on the past. However, there is a problem in that there is only channel coefficients from high to low, we can try and change into [0.227 0.46 0.688 0.46 0.227] This is the teacher gave me the simulation channel coefficient commonly used, this became normalized channel, is coefficient of the square and is 1. The second program is not related to channel coefficients, but this program which, in the 128 sub-carriers, the before and after the 32 air carriers, the in OFDM is also often used, which can reduce the error rate.
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Size: 19456 |
Author: hanshuanglin |
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Description: 介绍OFDM信号的基本特征 4qam编码原理及实现-OFDM qam
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Size: 11264 |
Author: 林子 |
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Description: 文件中含有ofdm仿真的全过程，包4qam,8qam形式进行调制、解调，转换等过程-Ofdm simulation file contains the entire process, including 4qam, 8qam form of modulation, demodulation, conversion process
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Size: 137216 |
Author: guo |
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Description:
一个完整的OFDM信号模拟程序，在4QAM调制下估计了OFDM的性能。-A complete OFDM signal simulation program, estimated at 4QAM modulation OFDM performance.
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Size: 138240 |
Author: hexd |
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Description: 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，OFDM频谱中最中间的那个子信道由于基带信号的直流成分大也被置0。-Generated by the MATLAB program 2Gbi/s baseband OFDM signal the first 2 ^ 15-1 pseudo-random sequence is mapped to 256 for 4QAM code modulation subcarriers, OFDM symbol after the re-encoded after IFFT transformation to convert it too domain waveform, and then add 6.4ns the cyclic prefix (CP), the data generated by Tektronix waveform and then loaded into the arbitrary waveform generator (AWG), resulting in 2Gbit/s baseband OFDM signal. Schematic diagram of the baseband OFDM signal spectrum shown in Figure 3. Including 256 sub-carrier OFDM subcarriers 256, 200 subchannels used to transmit data signals, 27 high and 28 low-frequency sub-channel over-sampling of the need to set 0, OFDM spectrum in the most middle of the baseband sub-channel as large DC component signal is also set to 0.
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Size: 220160 |
Author: QQ |
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