Description: 二进制通信系统的进行蒙特卡罗仿真程序，以正交信号为基础。当均值分别等于０，０.１，１.０，２．０时完成１００００个比特的仿真并求出误差概率。绘出理论误码率和蒙特拉罗仿真的差错率并进行比较这俩个结果，并绘出每个均值情况下判决器的１０００个接受信噪比抽样-Binary communication systems to carry out Monte-Carlo simulation procedures to orthogonal signal basis. When the mean, respectively, equivalent to 10,000 completed 0,0.1,1.0,2.0 bit error probability simulation and obtained. Mapping theory and蒙特拉罗BER simulation这俩error rate and compare results, and the mean circumstances of each mapped Platform: |
Size: 2048 |
Author:金玲 |
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Description: 本源码包参考英国Southampton大学Robert G. Maunder教授2008年的EXIT charts开源demo，给出了通用(分量码多项式可自定义)并行级联Turbo码的EXIT charts的作图源码。同时可完成迭代轨线、BER等值线的绘制等工作。
由于对于码块长较大的情形仿真需要较长时间，源码包也给出了部分分量码多项式的仿真结果，可直接用于绘图。
源码包还给出了最经典的S.Ten Brink介绍EXIT charts基本原理的参考文献，以及本人对通信系统中迭代译码过程分析技术综述的小论文，希望对大家有所帮助。-This source package comes after Professor Robert G. Maunder s open source demo about EXIT charts in 2008 from University Southampton, UK. It is designed for universal (constituent code generation polynomial can be customized) Parallel
Concatenated Turbo Code EXIT charts. The iterative trajectories and BER contour drawing is also completed in this package. Since the long block case costs a lot of simulation time, some simulation results are included in the package. We also give the most classical introduction to the basic principles of EXIT charts from S. Ten Brink, as well as a document about analysis technologies for iterative decoding process in communication systems. Hope this will help. Platform: |
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Author:何飞 |
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Description: 完成M=4的正交信号的数字通信系统的蒙特卡罗仿真。分析其在加性高斯白噪声下误码率与信噪比之间的关系，绘出误码率-信噪比曲线图，并和物理曲线进行比较。-The completion of M = 4 orthogonal signals in Monte Carlo simulation of digital communication systems. Analysis of the additive white Gaussian noise bit error rate and signal to noise ratio under the relationship between the mapped BER- signal to noise ratio curve, and and physical curves for comparison. Platform: |
Size: 3072 |
Author:马妍 |
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Description: 完成双正交信号的数字通信系统的蒙特卡罗仿真。分析其在加性高斯白噪声下误码率与信噪比之间的关系，绘出误码率-信噪比曲线图，并和理论曲线进行比较。-Complete pairs of orthogonal signals in Monte Carlo simulation of digital communication systems. Analysis of the additive white Gaussian noise bit error rate and signal to noise ratio under the relationship between the mapped BER- signal to noise ratio curve, and and the theoretical curves for comparison. Platform: |
Size: 3072 |
Author:马妍 |
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Description: 很好用的基带仿真通信系统。对每个给定信噪比的通信系统，计算BER的估计值-Well with the simulation of the baseband communications systems. A given signal to noise ratio for each communication system, computing the estimated value of BER Platform: |
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Author:王飞 |
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Description: This file contains codes for simulating BPSK modulation with Monte Carlo methos. it is so useful for calculating BER in communication systems. Platform: |
Size: 1024 |
Author:hamed |
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Description: A multiple-input multiple-output (MIMO) communication system combined with the orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable
high data rate transmission over broadband wireless channels. Channel state information for both single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is
investigated in this paper. The estimation of channel at pilot frequencies with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms is carried out
through Matlab simulation. The performance of MIMO OFDM and SISO OFDM are evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level.-A multiple-input multiple-output (MIMO) communication system combined with the orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable
high data rate transmission over broadband wireless channels. Channel state information for both single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is
investigated in this paper. The estimation of channel at pilot frequencies with conventional Least Square (LS) and Minimum Mean Square (MMSE) estimation algorithms is carried out
through Matlab simulation. The performance of MIMO OFDM and SISO OFDM are evaluated on the basis of Bit Error Rate (BER) and Mean Square Error (MSE) level. Platform: |
Size: 729088 |
Author:loihuynh |
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Description: Research towards meeting the higher demands for
higher data rates was the main reason for the birth of an
evolution technology towards the 4th generation mobile
communication systems. This evolution to the current 3rd
generation UMTS systems was given the name E-UTRA/UTRAN
Long Term Evolution (LTE) by the 3GPP. This paper analyzes
the requirements for this evolution and evaluates the
performance of the OFDM-LTE system under different
propagation impairments (AWGN and multipath fading
channels involving Pedestrian and Vehicular scenarios) in terms
of bit and symbol error rates (BER and SER) for different
modulation formats. Platform: |
Size: 3643392 |
Author:Dang Dung |
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Description: This document is about 16 QAM demapping of received data. But its a soft demapping method based Log likelihood ratio(llr). So results can be used as inputs for viterbi decoder or turbo decoder. It is very usefull to decrease BER for communication systems. In addition, QPSK, 64QAM etc. demappers can be derived based on this document. Platform: |
Size: 60416 |
Author:aydim turkken |
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Description: 通信系统与仿真作业：
1）设计π/4-DPSK或16-QAM调制器仿真程序， 画出时域波形、 正交分量、同相分量波形，眼图，散点图等。
2）利用MATLAB进行DPSK在高斯信道下的BER性能仿真，并将结果与PSK性能进行比较。
3）已知 OFDM的数据传输速率为19.2Kbps， OFDM 符号长度为320，保护间隔为32点，子载波数为128，IFFT/FFT点数为256，载波频率320KHz，调制方案采用QPSK，仿真其在高斯信道下的BER性能。
-Communication systems and simulation tasks: 1) Design π/4-DPSK or 16-QAM modulator simulation program, draw time-domain waveform, quadrature component, in-phase component waveforms, eye diagrams, scatter plots, etc. 2) the use of MATLAB for DPSK in AWGN channel BER performance simulation, and the results are compared with PSK performance. 3) the known OFDM data transmission rate of 19.2Kbps, OFDM symbol length is 320, the guard interval is 32 points, the number of sub-carriers 128, IFFT/FFT points is 256, the carrier frequency is 320KHz, using the modulation scheme QPSK, simulation of the in Gaussian channel BER performance. Platform: |
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Author:wander |
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Description: ：在长期演进(LTE)系统中，球形译码算法拥有接近于最大似然(ML)的误码率(BER)性能。针对在
16QAM和64QAM等高阶调制情况下球形译码算法计算复杂度和所需硬件资源的急剧增加，提出了一种调整符号搜
索策略的改进型球形译码算法。该算法在不同的检测层采用特定的符号搜索方案，并结合一种基于信噪比的动态调
整半径方法。在无线瑞利信道环境下，对各种球形译码算法进行了仿真。仿真结果表明，提出的改进型算法基本保持
传统球形译码算法较低的BER性能，同时还有效地降低了计算复杂度和硬件实现复杂度。-Motivated by the need for high throughput sphere decoding formultipleinput-
multiple-output (MIMO) communication systems, we propose
a parallel depth-first sphere decoding (PDSD) algorithm that provides
the advantages of both parallel processing and rapid search
space reduction. The PDSD algorithm is designed for efficient implementation
on programmable multi-processor platforms. We investigate
the trade-off between the throughput and computation overhead
when the number of processing elements is 2, 4 and 8, for a 4×
4 16-QAM system across a wide range of SNR conditions. Through
simulation, we show that PDSD can offer significant throughput improvement
without incurring substantial computation overhead by
selecting the appropriate number of processing elements according
to specific SNR conditions Platform: |
Size: 147456 |
Author:田航 |
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Description: This the code for MIMO based Maximum Liklihood detector to analyse the performance of BER calculation. Multiple-Input-Multiple-Output (MIMO) systems, which use multiple antennas at the transmitter and receiver ends of a wireless communication system. MIMO systems are increasingly being adopted in communication systems for the potential gains in capacity they realize when using multiple antennas. -This is the code for MIMO based Maximum Liklihood detector to analyse the performance of BER calculation. Multiple-Input-Multiple-Output (MIMO) systems, which use multiple antennas at the transmitter and receiver ends of a wireless communication system. MIMO systems are increasingly being adopted in communication systems for the potential gains in capacity they realize when using multiple antennas. Platform: |
Size: 17408 |
Author:backialakshmi |
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Description: 上数字通信课程时编写的大作业，主要设计一个基带通讯系统，采用QAM调制并且计算比特差错概率。-use MATLAB programming to implement some digital baseband communication systems, and plot the BER (bit error probability) versus Eb/N0 (from-5dB to 20dB) curves for 4QAM, 16QAM
Platform: |
Size: 1181696 |
Author:GW |
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Description: 给出接收信号眼图及系统仿真误码率，包含优化类的几个简单示例程序，有较好的参考价值，使用混沌与分形分析的例程，用于图像处理的独立分量分析，匹配追踪和正交匹配追踪，利用自然梯度算法，保证准确无误，是学习通信的好帮手。- The received signal is given eye and BER simulation systems, Optimization class contains several simple sample programs, There are good reference value, Use Chaos and fractal analysis routines, Independent component analysis for image processing, Matching Pursuit and orthogonal matching pursuit, Use of natural gradient algorithm, Ensure accurate communication is learning a good helper. Platform: |
Size: 9216 |
Author:gssque |
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Search - BER for communication systems