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897650
种基于VB6．0开发的可进行瓦斯监测并报警的友好界面。该界面通过串行通信方式接收各种瓦斯报警器采集的数据。(Species can be developed based on VB6.0 gas monitoring and alarm-friendly interface. The serial communication interface to receive a variety of gas alarm, the data collected.)
- 2011-05-23 21:32:47下载
- 积分：1
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ldpc_encode
本程序是对低密度奇偶校验码的校验矩阵的源程序，相信会对研究ldpc码的人会很有帮助的(This procedure is a low-density parity check matrix of code source, I believe that research on LDPC codes will be very useful)
- 2008-05-19 23:06:46下载
- 积分：1
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the-design-of-MVB-and-ethenet
有关MVB与工业以太网网关的设计与研究，对列车通信网络感兴趣的朋友可以看看(MVB and industrial Ethernet gateway for the design and research on the train communication network interested friends can see)
- 2011-10-31 18:23:49下载
- 积分：1
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m序列发生器
说明： m序列发生器(简单型码序列发生器-----simple shift register generator)(m sequence generator (a simple code sequence generator----- simple shift Regi ster generator))
- 2020-12-03 22:29:25下载
- 积分：1
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OFDM
OFDM多径信道的仿真和模拟,有效的仿真了多径信道(simulation of OFDM through multipath channel)
- 2019-03-26 19:43:53下载
- 积分：1
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7
说明： 7. 单径瑞利信道中的两发一收STBC：
(1) 分析误码率的理论性能，画出比特信噪比与误码率的关系曲线。
(2) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。(7. Two outgoing and one outgoing STBC in single-path Rayleigh channel:
(1) analyze the theoretical performance of bit error rate and draw the curve of the relationship between bit SNR and bit error rate.
(2) please design a specific navigation-assisted channel estimation method, Simulink simulation, measurement of BPSK modulation error rate performance.The relation curve between the bit signal-noise ratio and the mean square error of channel estimation is drawn, and the relation curve between the bit signal-noise ratio and the bit error rate is drawn.)
- 2021-01-23 11:58:45下载
- 积分：1
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TSP问题——遗传算法matlab实现
说明： 行商问题，自动生成最短路径。该算法可以生成经过拓扑每一点一次且仅一次最后回到起点的最短路径。(TSP problem: how to generate the minimal path for a salesman traveling among a set of points.)
- 2019-11-03 16:37:24下载
- 积分：1
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卫星通信中数字调相信号调制方式识别方法研究
说明： 针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)
- 2020-06-21 09:20:02下载
- 积分：1
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IEEE802.15.4a
ieee802.15.4a信道模型.是2-10G部分，是SV模型(ieee802.15.4a channel model )
- 2011-05-16 21:40:58下载
- 积分：1
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Q_DSSS
直扩码分多址DS-CDMA是利用高速的WALSH正交码序列作为地址码，与多用户信息数据相乘得到信息数据的直接扩频信号，再经过BPSK调制后发送出去，经过AWGN无线信道的传输后，在接收端与本地产生的地址码进行相关检测，从中将地址码与本地码一致的用户数据选出，把不一致的用户数据删除。(DS-CDMA DS-CDMA is the use of high-speed WALSH orthogonal code sequences as address code, with multi-user information data has been multiplied by the direct spread spectrum data information signal, and then after a BPSK modulated sent through AWGN channel after transmission, at the receiving end with the locally generated address code associated Detect, which will address code with local codes consistent user data elected to delete user data inconsistencies.)
- 2009-03-02 14:01:22下载
- 积分：1
