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LDPC码

于 2018-07-01 发布文件大小:13KB

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下载积分: 1 下载次数: 13

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代码说明：

信息通过LDPC编解码误码率与未编码信息误码率比较(Comparison of BER between uncoded information and LDPC code)

文件列表：

LDPC码\bpsk.m, 136 , 2016-06-12
LDPC码\getH.m, 4214 , 2016-06-10
LDPC码\H.mat, 8455 , 2016-06-12
LDPC码\H2G.m, 774 , 2016-06-12
LDPC码\ldpc_decode.m, 2273 , 2016-06-12
LDPC码\ldpc_main.m, 1499 , 2016-06-14
LDPC码\对比图.bmp, 236278 , 2016-06-04
LDPC码, 0 , 2016-07-01

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代码
本人用石川法求齿轮的啮合刚度，完整版的程序，里面可以运行啮合刚度图(Meshing Stiffness of Gears Calculated by Ishikawa Method)

2019-01-04 16:42:20下载

积分：1
66430717
产生一些常见的离散时间信号完成两个有限长序列的线性卷积和,用滑动平均滤波器对混有噪声的信号进行滤波()

2017-12-26 09:04:24下载

积分：1
bpsk_Awagn_Rayleigh
说明：实现了一个直接扩频系统，使用BPSK作为调制解调方法。并比较白噪声AWGN及瑞利衰落(rayleigh fading)环境下，误码率的影响。(There are two files in the zip folder. bpsk_spread.m and jakesmodel.m Steps for simulation: 1] Run jakesmodel.m first 2] Then run bpsk_spread.m . 3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented 4] The resulting performance is stored in BER_awgn. 5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file. 6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable. 7] Run the simulation. To compare the perfromances of the receiver using DSSS plot the BER_awgn and BER_ray >>semilogy([1:8],BER_awgn(1:8), g* ) hold on semilogy([1:8],BER_ray(1:8), -.b* ) hold on grid on )

2010-03-22 23:11:17下载

积分：1
Lab05_ATM
Asynchronous Transfer Mode (ATM) is a connection-oriented, packet-switched technology. The packets that are switched in an ATM network are of a fixed length, 53 bytes, and are called cells. The cell size has a particular effect on carrying voice traffic effectively. The ATM Adaptation Layer (AAL) sits between ATM and the variable-length packet protocols that might use ATM, such as IP.

2010-01-11 23:01:01下载

积分：1
2.-Ensuring-Quality
Ensuring Quality in Cloud and Mobile Applications

2015-10-15 17:02:31下载

积分：1
physical layer aspects
The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number.

2018-01-30 19:03:30下载

积分：1
AWGN
说明： qpsk在高斯信道下的仿真，包括误码率和仿真图(Simulation of QPSK in Gaussian channel)

2019-01-01 16:14:30下载

积分：1
ANFISCLUST_10SLOT
working of the fifth generation intelligent radio that is Cognitive Radio (CR) system which works on predictive data rate and propose ANFIS based learning scheme to introduce intelligence in it. The testing data set is taken from training set. Validation data set is unseen data. RMSE and prediction accuracy are used as performance index. Two gaussian membership functions are taken for each input. Error goal was set for .001.Training was for 300 epochs. It is seen prediction accuracy was 91 percentages in testing case and 89 in validation. RMSE difference between validation and testing case very small.

2011-11-29 23:02:21下载

积分：1
DLT645-2007
DL/T645-2007清晰文本版，可以CTRL+F(DL/T645-2007 clear text version, you can CTRL+ F)

2008-12-18 13:14:31下载

积分：1
标量阵矢量阵music估计
说明：基于music算法的均匀线阵的标量阵与矢量阵的方位估计(DOA estimation of scalar array and vector array based on music algorithm)

2020-11-08 20:29:48下载

积分：1

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LDPC码

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