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无线光通信技术具有通信容量大、传输速率高等众多优点, 在许多场合都有重要的应用, 是现代通信技术研究的一个热点。由于脉冲位置调制 ( PPM ) 有较高的平均功率利用率和抗干扰能力, 故 PPM是无线光通信系统中常用的调制方式。在研究 PPM调制技术的基础上, 就基于 FPG A的无线光通信 PPM调制系统进行设计, 并用 V H D L语言完成了系统的设计和仿真。仿真结果表明, 该设计具有正确性和合理性。-Wireless optical communication technology ha
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SPEECH ENHANCEMENT BASED ON WAVELET DENOISING
Abstract: - Noise is an unwanted and inevitable interference in any form of communication. It is
non-informative and plays the role of sucking the intelligence of the original signal. Any kind of
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describes a technique for emulating an RS232 UART with the ST7 timer without any
additional hardware. Only two pins are required for the serial communication.
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ofdm is a multicarrier modulation technique inn wireless communication
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基于asp.net同学录管理实现平台（论文+源代码）随着网络科技的发展使得网络逐渐成为人们生活与学习的工具，在网络上进行交流更方便、更快捷的优点使越来越多的人开始接触网络，而校友录更加受到人们的欢迎。
本系统是构造一个校友录，能很方便的和同学沟通和交流。校友录具有功能强大、使用方便的特点。用户以个人的身份进入，查找满足条件的班级，并填写个人资料，以便被查询。 在此设计中，主要的技术有：ASP.NET，HTML，ADO等，将它们集成在一个INTRANET（模拟INTERNET）的环境中，从而实
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网络编码的提出彻底地改变了计算机通信网络中的信息处理方式，其研究结合了信息论、计算机通信网络、
组播技术、多用户信息论和图论等很多方面的知识。文中简要介绍了网络编码的基本原理，线性网络编码的基本概念及其发
展，并且提出一种实现线性网络编码的算法。-Its research involves the knowledge about information theory, computer communication
networks, multicast technique, mul
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An effective technique to improve wireless
communication performance is transmit diversity.In this transmitter diversity using a new combination of space-time block codes (STBCs) concatenated with orthogonal frequency division.
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使用MATLAB对通信中的一种调制技术QPSK进行编程实现，分析其误码率-The use of MATLAB for communication in a QPSK modulation technique to program implementation, analysis of its error rate
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duction techniques proposed in the art are expressed as a spectral
gain depending on the a priori SNR. In the well-known decision-
directed approach, the a priori SNR depends on the speech spec-
trum estimation in the previous frame. As a conse
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OFDM调制技术在宽带高速电力线通信中的应用-OFDM modulation technique in broadband high-speed power line communication
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generation of wideband high dynamic range analog signal for area-efficient MADBIST, especially for the on-chip testing of wireless communication IF digitizing sigma–delta modulator chip. Via increasing the order of the one-bit bandpass sigma–delta m
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水印与信息隐藏及隐秘术密切相关。信息隐藏是一种在较大范围内使用的一个术语；而隐一词来自古希腊词汇steganos graphia，其意义为“秘密地写”，是一种隐秘通信技术；水印一种不被感知地在作品中嵌入某些信息以保护作品的技术。-Watermarking and information hiding and secret technique closely related. Information hiding is used in the larger context of a term t
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above is the java code for Runlength coding the coding technique which is often used in Multimedia communication for images etc etc.
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内附信息论基础知识课件及编码技术，对学习通信编码方面很有用。-Courseware included basic knowledge of information theory and coding technique is useful for studying communication code.
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communication modulation technique code
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As a multi-carrier modulation scheme, Orthogonal Frequency Division Multiplexing (OFDM)
technique can achieve high data rate in frequency-selective fading channels by splitting a
broadband signal into a number of narrowband signals over a number
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A multiple-input multiple-output (MIMO) communication system combined with the orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable
high data rate transmission over broadband wireless channels. Channel state i
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Digital Envelope v1.0. The objective of this project is to provide the secure communication over the network using both public key and private key cryptosystems. This is double fold encryption technique. This uses DES algorithm to encrypt the message
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The ten-year-old turbo codes are entering into service-ABSTRACT
In the matter of channel coding and spectral
efficiency, up to the invention of turbo codes, 3
dB or more stood between what the theory
promised and what real systems were able t
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分析和讨论了频率复用通信系统带来的交叉极化干扰问题，也是卫星移动通信系统的关键技术之一，对工程人员有很大的指导意义。-Analysis of the cross-polarization interferencein the frequency re-use communication system. It s one of the core technique for mobile satcom. It s a good instruction for engineers.
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