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CDMA
本此设计主要目的是掌握并验证多址技术的相关内容，不涉及移动业务的相关技术。通过学习CDMA宽带无线通信技术，掌握直接序列扩频通信的基本理论，掌握基于LabVIEW的通信系统基本设计和仿真方法，利用LabVIEW设计一个包括发送模块和接收模块在内的简单CDMA基带通信系统，实现信号的码分多址，扩频发送和同步接收等功能。(failed to translate)
- 2021-05-14 04:30:02下载
- 积分：1
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PLCdiantisheji
文件有两份电梯设计的毕业论文，使用PLC设计(File has two elevator design graduation thesis, using the PLC design)
- 2015-12-01 19:59:51下载
- 积分：1
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worktomonitorthemanagementsubsystemdetaileddesign
电子政务MIS详细设计劳动监察管理子系统详细设计(E-government MIS detailed design work to monitor the management subsystem detailed design)
- 2009-03-01 16:24:30下载
- 积分：1
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CRTSⅢ型板式无砟轨道静力学模型
CRTS3 型轨道的设计思路与设计过程，包括了详细的轨道参数(a model of CRTS3 track)
- 2021-02-08 16:19:54下载
- 积分：1
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fgd785687
浅海远程水声通信由于水声信道带来的严重多径干扰和衰落, 导致通信速率低、误码率高
以及接收端信噪比低等缺点。针对这一问题, 提出了一种比较有效的M 元线性调频(L FM ) 水声通
信技术。(Remote shallow water acoustic underwater communication channel because of the serious multi-path interference and fading, resulting in lower communication rate, error rate
And the receiver signal to noise ratio and low defects. To solve this problem, we propose a more effective M-ary linear FM (L FM) acoustic communication
ICT.
)
- 2011-12-25 14:44:01下载
- 积分：1
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Electric-telecontrol-protocol-of-104
电力远动规约的面向对象设计方法及以104为例的实现，由Java语言实现(Electric telecontrol protocol object-oriented design methods and implementation of 104)
- 2011-08-29 11:02:55下载
- 积分：1
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CY7C68013
CY7C68013的设计参考，中文资料，一个开发板作者提供的(CY7C68013)
- 2010-01-19 19:43:18下载
- 积分：1
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wojieliuliangji
涡街流量计数字信号处理系统的改进与实验
本文针对涡街流量计数字信号处理系统存在的不能测量小流量和易受电磁干扰的问题,对其软硬件方面进行了
改进。重新设计和研制了电荷放大器,提高了灵敏度,增强了适配能力。采取了合理的接地和屏蔽措施,提高了系统的抗干
扰能力。采用去均值和频谱校正的方法,改善了系统的测量精度。编制键盘监控软件,采用状态变量法设计键值分析程序,
实现人机对话功能。进行了液体流量和气体流量的标定实验,结果表明,改进后的数字信号处理系统比常规的流量计信号处
理系统的测量精度高、流程比宽和适配能力强。(Vortex Flowmeter digital signal processing system improvements and experimental
In this paper, vortex flowmeter digital signal processing systems can not exist in measuring small flows and vulnerable to electromagnetic interference problems, its hardware and software aspects of the
Improvement. To re-design and development of the charge amplifier, increasing sensitivity and enhanced adaptive capacity. Adopted a reasonable grounding and shielding measures to improve the system s anti-stem
Interference capability. Used to mean and spectral correction methods to improve the system s measurement accuracy. The preparation of keyboard monitoring software, using state-variable method designed to key analytical procedures,
Functions to achieve human-machine dialogue. Were liquid flow and gas flow calibration experiments, the results show that the improved digital signal processing systems than the conventional flow meter signal at
Management System s high accuracy, process than the w)
- 2010-02-01 08:14:53下载
- 积分：1
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PhD-Dissertation
关于二型模糊的一篇博士论文，对于二型模糊的学习很有帮助(A fuzzy about two doctoral thesis, for two fuzzy learning helpful.)
- 2015-04-13 09:54:05下载
- 积分：1
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vm
说明： Owing to the broad application value of audio
watermarking in remote transmission and mobile
extraction, it is very important to study watermarking
approaches against A/D and D/A conversion. Based
on wavelet decomposition and cepstrum technology,
an audio watermarking algorithm is proposed where
the low-frequency wavelet coefficients are chosen for
cepstrum transforming. Then, the obtained cepstrum
data shows stable for watermark hiding by the
methods of edging data cutting and statistical mean
modification. The synchronization is not required in
the algorithm. Experimental results show that the
proposed algorithm can resist on the attack of A/D
and D/A successfully with features of large capacity
and zero bit error. It will be helpful for the mobile
audio in secure broadcast and management in the
- 2010-02-05 01:56:27下载
- 积分：1
