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BEIDOUWeixing
北斗卫星接口文件
北斗卫星导航系统
空间信号接口控制文件
（测试版）
(Beidou satellite interface file Beidou satellite navigation system space signal Interface Control Document (Beta))
- 2012-11-04 12:16:07下载
- 积分：1
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4
说明： ：载波频率偏移是OFDM系统实现的关键问题之一。分析了OFDM 系统载频偏移估计的2
种算法，即利用循环前缀和训练序列方法。它们均为最大似然估计方法。分别讨论了它们的基本
思想、实现方法和仿真结果。可以看出基于循环前缀算法复杂度较小，精度不高，而基于训练序列
的算法有较高的估计精度，但降纸了系统传输效率。(Abstract：Carrier frequency ofset is one of the key problems in OFDM system．Two foundational methods
。cycling prefix—based and training sequence—based algorithms。to estimate OFDM carriers~equency
ofset are analyzed．Then it discusses their basic thoughts。implementing methods and simulation resuits．
Finally。merits and demerits of every algorithm are supposed．It concludes that the cycling prefix—
based algorithm has less complexity and less precision。and that the training sequence—based algorithm
has better estimation performance at the cost of transmission efficiency．)
- 2010-05-18 18:34:44下载
- 积分：1
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SPWM
我对于监控电源做的一些通讯协议，modbus rtu协议(I do monitor power communication protocol, modbus rtu protocol)
- 2012-09-13 09:37:13下载
- 积分：1
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nbldpc
多元ldpc编译码matlap程序，采用bp译码算法(Multiple LDPC coding and decoding)
- 2020-08-25 12:48:15下载
- 积分：1
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2×2的alamouti方案实现
说明： 可直接函数调用，根据Alamouti原始论文编写，双发双收。支持BPSK、QPSK、16QAM仿真的即时结果输出。(It can be called directly. It is written according to the original paper of Alamouti, with double sending and double receiving. Support real-time result output of BPSK, QPSK and 16QAM simulation.)
- 2020-04-03 02:01:36下载
- 积分：1
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直接序列扩频系统仿真
建立了直接序列扩频系统的matlab仿真模型，在信道中存在高斯白噪声和干扰的情况下，对系统的在不同扩频增益下的误码率性能进行了仿真及分析，分析了扩频码的自相关性、误码率、性噪比。(A matlab simulation model of the direct sequence spread spectrum system, the existence of Gauss white noise and interference in the channel under the condition of the system in different spreading gain the BER performance of the simulation and analysis, analysis of PN code autocorrelation, BER, SNR)
- 2021-04-21 15:18:49下载
- 积分：1
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commassist
visual C++ MFC 环境下 串口的连接，收发数据的实现，串口探测工具部分功能的实现(Serial port connection)
- 2013-07-20 17:03:57下载
- 积分：1
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双通道数据采集系统
声卡的双声道模拟输出，信号的采集与存储，信号的功率(Power spectrum analysis based on labview and data acquisition card, sound card, two-channel analog output signal acquisition and storag)
- 2018-11-01 21:57:16下载
- 积分：1
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wrongbitrate
无线光通信中的几种常见调试方式的误码率性能(the performance of bit error rate of some modulation schemes in wireless optical communication)
- 2020-12-14 16:29:14下载
- 积分：1
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LDPC_protograph
基于matlab的原模图仿真代码程序，有需要的可以在这上面改进(Simulation code program of original model graph based on MATLAB)
- 2021-03-20 14:49:18下载
- 积分：1
