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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: 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: ber vs snr for awgn-rayleigh channel
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Size: 3072 |
Author: sudhanshu shekhar |
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Description: 用NS2仿真802.11b WLAN信道。指出现有NS2代码中的错误，给出SNR、BER的计算公式和代码实现。-Simulate 802.11b Channel within NS2
This document describes how to simulate one 802.11b channel in NS2. It focuses on how to
simulate wireless transmission error due to bad channel quality. That means BER need to be
considered to determine whether one frame is transmitted correctly. To get BER, SNR need to be
calculated. The following sections describe current simulation of transmission error in NS2, the
methods to calculate SNR and BER, and how to incorporate these methods into NS to achieve our
aim--- to simulate 802.11b channels as exactly as possible.
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Author: kjyqcl |
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Description: MIMO 系统仿真，对时变信道的自适应调制-erq.m : function for ERQ algorithm in MIMO systems
space_wf.m : function for spatial domain power waterfilling
st_wf.m : function for spatial and temporal domain waterfilling
MIMO_rate.m : Plot spectral efficiency vs SNR for various cases
MIMO_ber.m : Plot BER vs SNR for ERQ algorithm
Report_figN.m : Plot figure N in final report (N=1,2,...,8)
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Size: 18432 |
Author: jonathan Peng |
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Description: 设计了一个OFDM接收机，并采用1fI公司的TMS320C6416芯片进行实现。在假设理想
同步的前提下，该系统进行了FFT变化、使用了Ls(最小二乘法)进行信道估计，并且采用了
QPSK算法进行解调。最后将接收机输出数据与发端数据进行比较，在不同信噪比情况下计算其
误码率，得出了比较理想的结果。-An OFDM receiver is designed in山is paper and realized on the platform of the 1MS32OC6416 chip
of the TI company．Under the assumption of ideal synchronization．n叩transformation is realized in the system
wit}l LS method implemented in the channel estimation module and QPSK used in the demodulation module．
Finally，BER is calculated in different cases of SNR and the result is achieved as expected．
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Size: 243712 |
Author: 王熹 |
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Description: 通过MATLAB软件；通过仿真得出性能曲线；从而比较bpsk的性能-The bit-error rate (BER) of binary phase-shift keying
in Rayleigh fading, using the Alamouti transmission scheme and
receiver selection diversity in the presence of channel-estimation
error, is studied. Closed-form expressions for the BER of log-likelihood
ratio selection, signal-to-noise ratio (SNR) selection, switchand-
stay combining selection, and maximum ratio combining are
derived in terms of the SNR and the cross-correlation coefficient
of the channel gain and its corrupted estimate. Two new selection
schemes, space–time sum-of-squares combining selection diversity
and space–time sum-of-magnitudes selection diversity, are
proposed and proven to provide almost the same performance as
SNR selection, but with much simpler implementations. The effects
of channel-
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Size: 340992 |
Author: 刘小洋 |
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Description: C program to calculate the BER performance of BPSK modulation in an AWGN channel. The program takes the file "BPSK" containing voltage levels and passes it in an AWGN channel with a given SNR. The received message is then Hard decision decoded and the bit error rate is calculated.
The BER over different SNR is calculated. THe output values can be used to draw a BER vs SNR(dB) curve.
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Size: 3072 |
Author: DeamonKenji |
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Description: The simplest channel which we use in ideal case is AWGN channel and everyone knows that before starting siluation on the other part of the system we must simulate the AWGN channel.this is AWGN channel with a BPSK signal going through it and finally we detect the signal and plot BER vs SNR to compair with the theory.
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Size: 1024 |
Author: samira |
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Description: PSK Uniform Fading using SNR and BER
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Size: 1024 |
Author: Johnathan |
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Description: Program for Space-Time-Block-Code BPSK modulation performance as a function of SNR and BER. (MATLAB)
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Size: 1024 |
Author: hakan |
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Description: Cooperative communication_power control
a) Generate random binary sequence of +1’s and -1’s.
(b) Given different Power to the source and the relay as well
(c) Multiply the symbols with the channel and then add white Gaussian noise.
(d) At any receiver(relay or destination), equalize (divide) the received symbols with the known channel
(e) Perform hard-decision-decoding and count the bit errors
(f) Plot the power given to both source(Ps) and relay(Pr) with both SNR and BER
-Cooperative communication_power control
a) Generate random binary sequence of+1’s and-1’s.
(b) Given different Power to the source and the relay as well
(c) Multiply the symbols with the channel and then add white Gaussian noise.
(d) At any receiver(relay or destination), equalize (divide) the received symbols with the known channel
(e) Perform hard-decision-decoding and count the bit errors
(f) Plot the power given to both source(Ps) and relay(Pr) with both SNR and BER
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Author: tafa |
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Description: Passing signal to AWGN channel after QAM modulation and plotting BER at SNR
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Size: 1024 |
Author: hamedvahedian |
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Description: this a matlab code for cdma it is a calculation of ber,snr etc.
-this is a matlab code for cdma it is a calculation of ber,snr etc.
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Size: 91136 |
Author: s |
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Description: SLNR下，信噪比和误码率的关系,比较SLNR和SINR最大的情况，SINR优于SLNR 1~2dB，但SLNR算法的计算量远小于SINR(ZF)-under slnr,the graph between snr and ber.
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Size: 1024 |
Author: chenyixuan |
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Description: 数字通信系统中采用基带传输和频带传输[ 1, 2 ] ,在抽样判决器之前,信号叠加了信道噪声. 本文利用
Matlab软件仿真[ 3, 4 ]分析了在判决器前叠加了高斯噪声后,信噪比与系统的误码率之间的关系.-Digital communication system using baseband transmission and band transmission [1, 2], in a sample before the decision device, the signal superimposed on the channel noise. In this paper, Matlab software simulation [3, 4] of the device in the sentence before the superposition of the Gaussian noise After the SNR and BER relationship.
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Size: 125952 |
Author: zhujianbo |
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Description: 仿真分析在格雷码和QAM调制下的SNR与BER关系-analyze gray code and QAM moudulation about SNR and BER relationship
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Size: 2048 |
Author: zhanguangshan |
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Description: The report describes various modulation schemes and the SNR and BER Performance of the schemes. The project is about a program that selects a particular modulation scheme according to the SNR and BER performance required.
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Size: 253952 |
Author: Vaibhav |
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Description: amplify and farward : code in mtalab that produce figures of BER and SNR for amplify and farxard relay
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Size: 1024 |
Author: saida |
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