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report2008
说明: 中国的手机游戏市场用户调研报告2008年度(China mobile phone game market research report of 2008 users)
- 2009-07-22 15:06:40下载
- 积分:1
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多个城市建设通信网络
在n个城市建设通信网络,只需架设n-1条线路即可至少包含10个城市,城市数n由键盘录入,城市坐标由随机函数产生小于100的整数(In the construction of communication network in n cities, only n-1 lines are needed to include at least 10 cities. The number of cities n is input by keyboard, and the coordinates of cities are generated by random functions into integers less than 100.)
- 2020-06-20 05:20:02下载
- 积分:1
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MIMO OFDM
实现基于STBC的MIMO_OFDM通信系统在不同信噪比情况下接收端的误比特率的仿真。发射端包括基于基带调制、空时编码、导频插入、IFFT、串并合并以及添加循环前缀;接收端包括去除循环前缀、取出导频估计信道、FFT运算以及并串合并,空时解码等。仿真中采用QPSK、空时编码采用4*3的复正交空时编码矩阵。OFDM子载波数为100,每个子载波传输66个符号,每个符号2比特。IFFT长度为512个符号。发射天线为3个接收天线为2个。(The BER simulation of MIMO_OFDM communication system based on STBC under different SNR is realized. The transmitter includes baseband modulation, space-time coding, pilot insertion, IFFT, serial-parallel combination and adding cyclic prefix; the receiver includes removing cyclic prefix, extracting pilot estimation channel, FFT operation, parallel-serial combination, space-time decoding, etc. The complex orthogonal space-time coding matrix is used in QPSK and space time coding in 4*3. The number of OFDM subcarriers is 100, and each subcarrier transfers 66 symbols with 2 bits per symbol. IFFT is 512 symbols in length. The transmitting antenna is 3 receiving antennas, 2.)
- 2020-12-07 16:19:21下载
- 积分:1
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DF-collaborative-program
协作通信中译码转发方式DF协作方式实验仿真主程序。(DF collaborative experiment simulation main program)
- 2011-07-05 21:10:16下载
- 积分:1
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高斯信道
高斯信道下的误码率与瑞利衰落与高斯信道下的误码率的比较分析(Comparison of Bit Error Rate in Gaussian Channel and Rayleigh Fading and Bit Error Rate in Gaussian Channel)
- 2019-06-15 19:30:24下载
- 积分:1
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Sample_VC
说明: prodave是西门子PLC与高级语言的程序接口,如何使用它,这里给出一个VC与西门子PLC通讯并读写DB块数据的例子(Prodave is Siemens PLC and high level language program interface, how to use it, so here is a VC and Simon PLC and literacy DB block of data example
)
- 2011-04-18 15:09:48下载
- 积分:1
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obgain
中国移动互联网短信网关接口部分协议SGIP12 0 2 参考Short Message Peer-to-Peer Proto()
- 2018-04-15 23:12:52下载
- 积分:1
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3Leach
横重要的leach 协议哦对你有很大的帮助
(Oh cross important leach agreement)
- 2016-01-27 11:25:01下载
- 积分:1
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costas
costas环matlab仿真,已经通过验证可行(Costas ring matlab simulation, has been verified feasible)
- 2020-09-12 14:18:01下载
- 积分:1
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周期图
使用周期图法进行谱估计,主要使用自相关算法和直接法(We use the periodogram method to estimate the spectrum, mainly using autocorrelation algorithm and direct method.)
- 2018-06-26 23:05:55下载
- 积分:1