Author: wei liu Summary: simulation of binary and non-binary bch decoder MATLAB Release: R14SP1 Required Products: Communications Toolbox Description: simulation of binary bch decoding algorithm for bch(n, k) with t bits Error correction capability.
标签： simulation non-binary Summary Release
上传时间： 2014-01-10
上传用户：frank1234
This program includes: [5 7] convolutional code (encoder) + BPSK + AWGN + MAP (decoder). It evaluates Bit Error Rate and plots it versus SNR(signal to Noise Ratio).
标签： convolutional includes program encoder
上传时间： 2015-12-24
上传用户：bruce5996
We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square Error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.
标签： frequency-offset estimation quadrature amplitude
上传时间： 2014-01-22
上传用户：牛布牛
Flash写的小RPG游戏。。。。 # Archive D:\IT\source_code\1game\RPG.rar effect\enemy\0.fla effect\enemy\0.swf effect\enemy effect\hero\1.fla effect\hero\1.swf effect\hero\0.swf effect\hero effect Error\Error.fla Error\Error.swf Error magic\magic1.fla magic\magic2.fla magic\magic3.fla magic\magic4.fla magic\magic5.fla magic\magic5.swf magic\magic4.swf magic\magic3.swf magic\magic1.swf magic\magic2.swf magic\magic0.fla magic\magic0.swf magic map\0.fla map\3.fla map\2.fla map\5.fla map\4.fla map\1.fla map\8.fla map\6.fla map\7.fla map\8.swf map\7.swf map\6.swf map\3.swf map\1.swf map\0.swf map\2.swf map\4.swf map\5.swf map sound\002.mid sound\001.mid sound\Victory.mid sound\Field02.mid sound\Negative01.mid sound\Dungeon01.mid sound RPG.fla RPG.html RPG.swf # # Files # 53
标签： effectenemy ITsource_code Archive gameRPG
上传时间： 2016-01-23
上传用户：hanli8870
本程序实做MLP(Multi-layer perceptron)算法，使用者可以自行设定训练数据集与测试数据集，将训练数据集加载，在2、3维下可以显示其分布状态，并分别设定键节值、学习率、迭代次数来训练其类神经网络，最后可观看辨识率与RMSE（Root Mean squared Error）来判别训练是否可以停止。
标签： Multi-layer perceptron MLP 程序
上传时间： 2013-12-24
上传用户：caozhizhi
Comparison of the performances of the LS and the MMSE channel estimators for a 64 sub carrier OFDM system based on the parameter of Mean square Error
标签： the performances Comparison estimators
上传时间： 2016-02-01
上传用户：hgy9473
Status StrAssign(SString T,char *chars) { // 生成一个其值等于chars的串T int i if(strlen(chars)>MAXSTRLEN) return Error else { T[0]=strlen(chars) for(i=1 i<=T[0] i++) T[i]=*(chars+i-1) return OK } }
标签： chars StrAssign SString Status
上传时间： 2014-01-10
上传用户：lwwhust
在两台机器运行serealcom.exe， 但必须保证用串口线连接， 选择串口时如出现Error, 表明此串口正被其它设备使用。
上传时间： 2016-03-05
上传用户：invtnewer
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.
标签： simulator i.e. system-level link-level
上传时间： 2016-03-15
上传用户：xsnjzljj
This project aim was to build wireless software modem for data communication between two computers using an acoustic interface in the voice frequency range (20Hz– 20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz – 20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz – 16,000Hz). The test files used as information files were text files. This goal was attained both in an incoherent scheme and in a coherent scheme. Build under Matlab code, our modem uses OFDM (orthogonal frequency division multiplexing) modulation, synchronization by LMS sequence, channel estimation (no equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of 2 or 4. To optimize the probability of Error, these symbols were mapped using Gray mapping. Report
标签： communication computers software wireless
上传时间： 2014-05-29
上传用户：wangdean1101
