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ofdm中互补序列降低par的ber程序-OFDM in the complementary sequences of ber program to lower par
Date : 2025-12-31 Size : 3kb User : 坦克

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.
Date : 2025-12-31 Size : 298kb User : 朱红霞

DL : 0
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).
Date : 2025-12-31 Size : 94kb User : 田静

DL : 1
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 -------------------------------------------------------------------------------- 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
Date : 2025-12-31 Size : 180kb User : 田静

ber vs snr for awgn-rayleigh channel
Date : 2025-12-31 Size : 3kb User : sudhanshu shekhar

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。
Date : 2025-12-31 Size : 157kb User : apple

DL : 0
OFDM 系统信噪比估计,matlab源代码-OFDM system, SNR estimation, matlab source code
Date : 2025-12-31 Size : 5kb User : lulu

DL : 0
这个函数具有如下功能:对Alamouti空时编码进行仿真并绘出误码率与信噪比的关系图- This is a function that simulate the Alamouti Space-Time scheme and plot a BER vs SNR graph.
Date : 2025-12-31 Size : 4kb User : 孟凤琴

This program is used to Simulate the performance of (n,k)Reed Solomon code in AWGN channel with plotting the results and compare with the theoretical performance of this code in AWGN channel. The program also print the SNRdB, absolute snr ,simulated probability of error, exact probability of error in each steps-This program is used to Simulate the performance of (n,k)Reed Solomon code in AWGN channel with plotting the results and compare with the theoretical performance of this code in AWGN channel. The program also print the SNRdB, absolute snr ,simulated probability of error, exact probability of error in each steps
Date : 2025-12-31 Size : 1kb User : ghanim

OFDM系统,调制方式QPSK,查看星座图,分析误码率-OFDM systems, modulation QPSK, view the constellations, the bit error rate analysis
Date : 2025-12-31 Size : 1kb User : cai

It calculate and plot the capacity of SISO,MISO and SIMO and compare it with SNR.-It calculate and plot the capacity of SISO,MISO and SIMO and compare it with SNR.
Date : 2025-12-31 Size : 1kb User : Dinesh Panthy

DL : 0
BER SNR plot in rayleigh channel with maximal ratio combining technique for MIMO
Date : 2025-12-31 Size : 3kb User : frdownload

the comb pilot aided channel estimation in ofdm modulation is considered. the power of pilot subchannels is under the control. The data experience frequency selective channel then the AWGN noise is added to make the situation worse. The bit error rate is ploted versus SNR.
Date : 2025-12-31 Size : 497kb User : Muhammad Ali Aftab

This M Code simulate the effects of clipping and filtering on PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase. -This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
Date : 2025-12-31 Size : 11.23mb User : shahram

2发1收STBC-OFDM系统仿真,以误码率曲线显示结果-simulation of the 2*1 STBC-OFDM systerm,the result is presented with BER-SNR curve
Date : 2025-12-31 Size : 2kb User :

针对OFDM系统,分成链路级仿真和系统级仿真两个部分。为了降低系统级仿真的复杂度,采用链路级仿真的部分结果。-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. Link-level simulator support SISO, 1 by x MRC, 2 by 1 STBC/SFBC, 2 by 2 Alamouti, x by 1 Antenna selection, x by y antenna selection. System-level simulator, currently support only SISO and 1 by 2 MRC. To start with, go into the folder sys_link_simu, and excute the following commond from matlab: sys_link_simu_func(a,b) where a is the link ada
Date : 2025-12-31 Size : 280kb User : 王刚名

 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
Date : 2025-12-31 Size : 14kb User : liufan

DL : 0
This program plots the BER vs SNR for a 4X4 MIMO-OFDM system.
Date : 2025-12-31 Size : 1kb User : deepa

本程序给出了OFDM信道的仿真,直接运行主函数OFDM_test即可,给出了信道BER随SNR的关系。-This procedure gives a simulation of OFDM channel and run directly the main function OFDM_test can, given the relationship between the channel BER with SNR.
Date : 2025-12-31 Size : 1.04mb User : 王文集

DL : 0
Matlab 信噪比 基于OFDM系统的M2M4的信噪比估计-Matlab signal-to-noise ratio
Date : 2025-12-31 Size : 2kb User : wqf
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