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myicqsourcecode.rar
i c q 即 时 通 信 软 件， j a v a 实 现。 很 好 的 学 习 软 件。(icq instant messaging software, java implementation. Very good learning software.)
- 2009-03-13 20:49:18下载
- 积分：1
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Longley-Rice model代码
说明： 经典无线链路预算模型，预测了在自由空间中由地形的非规则性造成的中值传输衰落。该模型适用于频段为20MHz至40GHz、路径长度为1km至2000km的情况。对于给定的传输路径，该计算机程序通过频率、路径长度、极化方向、天线高度、表面绕射率、地面有效半径和地面导电常数等参数可以确定传输损耗的大小。(Classic wireless link budget model, forecasts the in free space caused by terrain of regularity in the value decline.The model is suitable for the frequency of 20 MHZ to 40 GHZ, path length of 1 km to 2000 km.For a given transmission path, this a computer program can calculate the value of the transmission loss by frequency, path length, polarization direction, antenna height, surface diffraction, effective radius of the ground and ground conductivity constant parameters and so on.)
- 2021-04-12 13:28:57下载
- 积分：1
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5
说明： 5. 在三条径的瑞利信道中，对于直接序列扩频：
(1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法，接收机分别采用等均益合并、最大比合并。用Simulink进行仿真，画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。
(2) 设频率已经同步，请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
(3) 设时间已经同步，请设计DS-CDMA一种具体的频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(5. In three-path Rayleigh channel, for direct sequence spread spectrum:
(1) please design a specific code division navigation aided channel estimation method for ds-cdma, and adopt equal-beneficial combination and maximum ratio combination for receivers respectively.Simulink is used to simulate and draw the relationship curve between bit SNR and channel estimation mean square error and the relationship curve between bit SNR and bit error rate.
(2) assuming that the frequency has been synchronized, please design a specific single-stop sliding correlation time synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and the acquisition probability curve.
(3) if the time has been synchronized, please design a specific frequency synchronization method ds-cdma, Simulink simulation, draw the relationship between the bit SNR and frequency synchronization error curve.)
- 2019-01-15 10:58:23下载
- 积分：1
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194947
用TCP获得网路标准时间来设定您的PC时钟(Set your PC clock with TCP to get network standard time)
- 2018-12-31 15:05:46下载
- 积分：1
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在VC++6.0中用MSComm控件编程，可以实现串口接
在VC++6.0中用MSComm控件编程，可以实现串口接(used in VC 6.0 MSComm programming, serial port access can be achieved)
- 2005-01-04 04:01:12下载
- 积分：1
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shan_ban_1_s
计算矩形栅格或三角栅格阵列天线栅瓣图，优化天线单元间距设计(caculate grating lobes of rectangular grid or triangular grid array)
- 2020-11-24 15:59:35下载
- 积分：1
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adfessdfg
java源码程序关于matlab学习(procedures on Matlab learning)
- 2004-12-09 14:17:30下载
- 积分：1
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statisticalMIMOradar
说明： 统计MIMO雷达的国外课件，对统计MIMO进行介绍包括一些仿真(statistical MIMO radar)
- 2010-04-17 16:30:12下载
- 积分：1
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Rayleigh_fading
利用自回归模型产生Rayleigh率落信道(use of regression models have Rayleigh rate charged Channel)
- 2006-09-12 15:27:33下载
- 积分：1
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DSSS
利用MATLAB实现多用户的扩频通信的发送和接受，程序可以直接跑，不需要改动！(The use of MATLAB implementation of multi-user spread spectrum communication send and receive, the program can be directly run, no changes!)
- 2020-07-02 22:00:01下载
- 积分：1
