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Description: 基于OFDM的无线宽带系统仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
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Size: 256051 |
Author: zhangli |
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Description: ofdm中互补序列降低par的ber程序-OFDM in the complementary sequences of ber program to lower par
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Size: 3072 |
Author: 坦克 |
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Description: 这是我们通信建模与仿真书上的程序，是白噪声＆瑞利信道下对OFDM的仿真实现。-This is our communication on Modeling and Simulation on the procedures, White Noise & Rayleigh Channel on OFDM Simulation.
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Size: 7168 |
Author: wangping |
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Description: 给出了几种OFDM仿真的源程序，包括传输误码率与信噪比的关系图等。-given several OFDM simulation of the source, including transmission error rate and SNR map of the relationship.
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Size: 173056 |
Author: 李晓茜 |
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Description: 基于OFDM的无线宽带系统仿真It contains mainly two parts, i.e. link-level simulator and system-level simulator.
Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.
System-level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.-OFDM-based wireless broadband system simulation It contains mainly two parts, ie link-level simulator and system-level simulator.Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx . Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table, that can be used for the system-level simulation.System- level simulator focus on a multi-cell multi-user scenario. For the sake of simplicity, it takes the mapping table aquired in the link-level simulation, measure the actural SNR, and finds the corresponding error rate.
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Size: 256000 |
Author: zhangli |
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Description: matlab环境中ofdm基本原理的源程序，实现了误码率和SNR关系的图形显示-matlab environment the basic principles of OFDM source, realized the relationship between BER and SNR of the graphical display
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Size: 1024 |
Author: 张星星 |
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Description: 结合OFDM的典型调制解调系统，输出误码率与信噪比仿真图，及误码率与信噪比理论图
ofdm.m为主运行文件-A typical combination of OFDM modem system, the output bit error rate and SNR simulation diagram, and bit error rate and SNR ofdm.m-based theory of graph paper to run
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Size: 21504 |
Author: 陈俊鑫 |
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Description: 本程序利用改进的CHOW算法，仿真了自适应OFDM系统的性能，并画出了SNR-BER仿真图。对于学习OFDM自适应资源分配者有很帮助。-This procedure improved CHOW algorithms, simulation of the adaptive OFDM system performance, and draw the SNR-BER simulation Fig. Adaptive OFDM for learning the distribution of resources to help those who have.
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Size: 305152 |
Author: 朱红霞 |
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Description: 很好的OFDM的基于MATLAB的仿真程序包，且包含了最终结果图.-montecarlo
type montecarlo in the command window and wait for a long time..
_simulation of the complete OFDM system.
_use of a very large file in order to get probabilities.
_loop over different value of the noise.
_compute the SNR for each value of the noise.
_provide the SNR/BER plot.
if you are in a rush : simulation_system !!
go into the right folder and type simulation_system in the command window.
_then type the value of the noise power (range = [-20,10])
_the function provides the channel estimation, the bit allocation,
and a plot illustrating the errors.
_this is a fast function (less pilot, no synchronization, small file).
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Size: 96256 |
Author: 田静 |
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Description:
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 (outer function)
create_channel.m: Generates a Rayleigh fading frequency-selective channel, parametrized by the antenna configuration, the OFDM configuration, and the power-delay profile.
svd_decompose_channel.m: Since full channel knowledge is assumed, transmission is across parallel singular value modes. This function decomposes the channel into these modes.
BitLoad.m: Apply the bit-loading algorithm to achieve the desired bit and energy allocation for the current channel instance.
ComputeSNR.m: Given the subcarrier gains, this simple function generates the SNR values of each channel (each singular value on each tone is a separate channel).
chow_algo.m: Apply Chow s algorithm to generate a particular bit and energy allocation.
EnergyTableInit.m: Given the SNR values, form a table of energy increments for
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Size: 184320 |
Author: 田静 |
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Description: OFDM程序，这么安排矩阵的目的是为了构造共轭对称矩阵
共轭对称矩阵的特点是 在ifft/fft的矢量上 N点的矢量
在0，N/2点必须是实数 一般选为0
1至N/2点 与 （N/2）+1至N-1点关于N/2共轭对称- BPSK simulation using a carrier cosine wave with ISI
clc
close all
clear all
figure(1)
n=160
for i=1:n
data(i)= 2*round(rand)-1
end
create modulated BPSK signal
first expand the bit stream
exdata=[]
for i=1:length(data)
for rep=1:5
exdata= [exdata data(i)]
end
end
ts=.1
t=1:ts:80.9
carrier=cos(pi*t)
multiply expanded bitstream by cosine wave with carrier frequency
this is the BPSK that is to be transmitted over the channel
bpsk=carrier.*exdata
bpsk=[bpsk(length(bpsk)-1) bpsk(length(bpsk)) bpsk]
plot(bpsk)
generating the noise
p=rand(1,800)*2*pi
p=rand*2*pi
snr=10
r=sqrt(-1*(1/snr*log(1- rand)))
no = 5*(r.* exp(j*p))
no = (r.* exp(j*p))
value of alpha
al=rand+j*rand
al=1
Spreading channel with the alpha as the variable
for k=5:5:795
for l = 1:5
al=round(rand)+j*round(rand)
rec(k+l)=bpsk(k+l)+al*bpsk(k-5+l)
end
end
rxdata=rec+ no
begin demodulation
first multiply recie
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Size: 6146048 |
Author: 卞敏捷 |
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Description: OFDM链路级的仿真器场景是单小区单用户，信号从发送端发送，在接收端进行信号估计。估计误差可以从接收和发送信号的不同得到。仿真器的输出是BLER/BER vs SNR。-OFDM Link-level simulator focus on a single-cell single-user scenario, where signal is transmitted from tx, and estimated at rx. Comparing the difference in tx/rx signal, the error rate can be found out. The output of the link-level simulator is the BLER/BER vs. SNR mapping table。
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Size: 160768 |
Author: apple |
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Description: ofdm simulation, cantains ber, snr. it s short code ofdm mimo, wimax wide.
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Size: 3072 |
Author: dmowskik |
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Description: OFDM中不同信噪比对误码率性能的影响的matlab仿真的实验代码-Different OFDM bit error rate performance of SNR on the impact of the experiment code on matlab simulation
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Size: 2048 |
Author: 王伟 |
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Description: 对OFDM通信系统进行仿真，使用AWGN信道，生成误码率与信噪比的仿真图形，并与理论图形进行比较-The simulation of the OFDM communication system, using the AWGN channel, BER and SNR generated graphic simulation, and compared with the theoretical graph
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Size: 2048 |
Author: 冉茶宗 |
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Description: This simulation plots the Effective SNR of and OFDM as a function of Output Power
Backoff from 0 to 9.5 dB, for three different number of carriers.
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Size: 2048 |
Author: pooja |
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Description: 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 Simulator:
OFDM.m: OFDM Simulator (outer function)
create_channel.m: Generates a Rayleigh fading frequency-selective channel, parametrized by the antenna configuration, the OFDM configuration, and the power-delay profile.
svd_decompose_channel.m: Since full channel knowledge is assumed, transmission is across parallel singular value modes. This function decomposes the channel into these modes.
BitLoad.m: Apply the bit-loading algorithm to achieve the desired bit and energy allocation for the current channel instance.
ComputeSNR.m: Given the subcarrier gains, this simple function generates the SNR values of each channel (each singular value on each tone is a separate channel).
chow_algo.m: Apply Chow s algorithm to generate a particular bit and energy allocation.
EnergyTableInit.m: Given the SNR values, form a table of energy increments for each channel.
campello_algo.m: Apply Campello s algorithm to converge to the optimal bit and energy allocatio
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Size: 14336 |
Author: liufan |
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Description: Diversity at high SNR OFDM program
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Size: 1024 |
Author: Aws |
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Description: OFDM系统计算BER和 SNR，较为准确(compute BER and SNR,ofdm sym can make a real SNR and BER.)
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Size: 1024 |
Author: dasdsaf
|
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Description: 用MATLAB编写的2收2发的带衰落性的信道的MOMO-OFDM(In MATLAB 2-2 of the decaying channel momo-ofdm)
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Size: 1024 |
Author: zhangxiao
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