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城市公共交通IC卡技术规范
说明： 交通部发行的城市公共交通IC卡技术规范，用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)
- 2020-06-24 20:20:01下载
- 积分：1
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opticalcommunication1
optical cummunication examples
- 2012-01-12 22:10:44下载
- 积分：1
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[20]network-coding-an-instant-primer
network coding research paper helps to understand wireless network coding implementation
- 2012-01-21 12:51:58下载
- 积分：1
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Running_ERD_Commander_2005_from_flash_drive[1]
running erd commander form usb stick
- 2011-10-14 12:48:53下载
- 积分：1
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ONVIF_Device_Test_Tool_v12.06
ONVIF的测试工具12.06版本,测试是否支持ONVIF协议及其他.(12.06 version of ONVIF test tool, test to support ONVIF protocol and other.)
- 2012-12-27 14:12:20下载
- 积分：1
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serial_test
完整的串口编程实例，MSCOMM控件编程(A Complete Example of Serial Port Programming)
- 2020-06-16 10:20:01下载
- 积分：1
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Linux_ip
详细的讲述了linux的ip/tcp通信部分的协议栈，对开发很有帮助(Linux detail of the ip/tcp communication part of the protocol stack, on the development of useful)
- 2009-04-06 01:45:51下载
- 积分：1
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pcma资料1
说明： 这是最新的卫星通信基础理论的Matlab仿真实现，pcma以及信号衰减和延迟的仿真。尽管不是我本人原创，但比较都经典。文件为*.m格式 (This is the latest in satellite communications theoretical basis Matlab Simulation, pcma and signal attenuation and delay in the simulation. Although it was not my original, but more are classics. M*. document format)
- 2005-12-01 15:47:31下载
- 积分：1
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asd
航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控，其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency
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- 2011-07-13 11:21:08下载
- 积分：1
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simulation
about simulation in zone routing protocol
- 2013-05-07 10:14:12下载
- 积分：1
