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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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adhoc-network
对学习AD HOC网络很有帮助的一些电子文档，可以了解此网络的基本原理和一些协议之间的比较，以及改进。大家看看肯定会有所帮助哦(The study of electronic document helpful AD HOC network)
- 2012-03-10 20:31:57下载
- 积分：1
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802[1].3afPandPP802.3at-2009
802.3af/at标准,POE 供电协议(standard of 802.3af/at)
- 2011-05-28 10:26:46下载
- 积分：1
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IEC 60870-5-101Transmission protocols
说明： IEC 60870-5-101 通信规约英文版规范(IEC 60870-5-101-2003 Telecontrol equipment and systems Part 5-101 Transmission protocols)
- 2020-06-17 09:20:02下载
- 积分：1
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starbucks
it is a discription of starbucks supplychain managment system
- 2013-01-18 23:52:04下载
- 积分：1
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05441004
Multiple input multiple output techniques combined
with orthogonal frequency division multiplexing (MIMO-OFDM)
provide a promising approach for wireless systems. However, a
serious drawback of the OFDM system is the high peak-toaverage
power ratio (PAPR), which may severely affect the
power efficiency of RF power amplifiers. In this paper, we
propose a simple method to reduce the PAPR of MIMO-OFDM
signals based on the use of unused subcarriers. Instead of
processing the signals at each transmitter separately, a peak
cancelling signal is generated at one antenna and is then applied
to all the others with only simple modifications. Simulation has
shown that a minimum 2 dB reduction in PAPR can be achieved
for all transmit signals using this approach. As the signal
processing is nearly all done at a single transmitter, repetition of
the operations at each transmitter is avoided, and therefore the
overall cost of the system can be significantly reduced.
- 2011-11-05 01:46:42下载
- 积分：1
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相控阵雷达天线模型及仿真
相控阵雷达天线模型及仿真论文，非常好用，推荐(Phased array radar antenna model and simulation paper, very useful, recommended)
- 2019-04-21 15:46:36下载
- 积分：1
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Study-on-the-Control-Scheme
恒频恒压(CVCF)逆变电源的输出电压波形质量是衡量其性能的重要指标之一。文章采用一种重复控制和双闭环控制相结合的电压波形控制策略，以重复控制器提高逆变电源输出电压的稳态精度，减小总谐波畸变率；以双闭环控制器达到较快的动态响应速度。该方案在一台采用TMS320F240 DSP控制芯片的50 Hz三相PWM逆变器上得到验证。(Constant voltage constant frequency (CVCF) Inverter output voltage waveform quality is an important measure of its performance indicators. Paper using a repetitive control and the combination of double closed loop control voltage waveform control strategy to improve the repetitive controller output voltage inverter steady-state accuracy and reduce total harmonic distortion to achieve a faster dual-loop controller dynamic response speed. The program uses TMS320F240 DSP in a 50 Hz phase control chip PWM inverter has been to verify.)
- 2011-05-17 11:02:50下载
- 积分：1
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John-Wiley-a-Sons---IP-Based-Next-Generation-Wire
John Wiley & Sons - IP-Based Next-Generation Wireless Networks
- 2012-03-16 22:16:27下载
- 积分：1
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Diversity
无线网络中分集合并，包含原理，流程图，仿真图，源代码(Cooperative Diversity in Wireless Networks)
- 2012-05-17 10:12:36下载
- 积分：1
