Firstly, the basic model and express form are introduced, also the necessity of channel estimation and equalization in OFDM UWA communication is discussed.

This thesis focuses on the phase coherent UWA communication techniques. Phase Coherent Frequency-hopped Waveform Synthesis by Using the SAW Chirp Transform

本文对相位相干通信技术在水声信道中的应用进行了深入的研究。SAW Chirp变换综合相干捷变频信号

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Discusses the unfavorable effects of the shallow water acoustic channels on data transmission, and objectively introduces recent certain advanced in UWA communication.

论文主要进行了以下几个方面的研究工作：1.分析了浅海声传输特点和对水声数据传输的不利影响，并较客观和全面地综述了浅海域水声通信技术的研究概况；

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Channel equalization is of great necessary for the successful UWA communications because of the complexity of underwater acoustic channels.

由于海洋信道的复杂性，要实现可靠的水下声通信，必须进行有效的信道匹配。

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In recent years, the efficiency and the quality of UWA is improved by introducing blind equalization and spread spectrum techniques.

近年来，将盲均衡和扩频技术引入到水声通信中，有效的提高了复杂水声信道的通信效率和质量。

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With the LFM pulse frame synchronization method, the performance of UWA communication system based on DPSK is apparently improved.

同时运用线性调频脉冲帧同步法，改善了基于差分相移键控的水声数字通信系统的性能。

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Application of Linear Inserting-Values Arithmetic and so on in UWA OFDM System's Frequency Field Equalization

线性插值算法等在OFDM水声通信系统频域均衡中的应用研究

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A UWA channel model including the time-varying fading, multipath and additive noise is built.

建立了包括时变衰落、多途和加性干扰的水声信道模型。

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Underwater acoustic ( UWA) communication technology is the primer tool to study and develop the ocean.

火声通信技巧非研讨和开收海土的从要工具之一。

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UWA graduates are held in high regard by Australian and overseas employers.

毕业于UWA的学生在澳大利亚和海外雇主中享有盛誉。

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The Study of Routing Protocols for UWA Networks

水声通信网络路由协议研究

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In addition, combined with OFDM technology, the image transmission system in UWA channel is set up.

并进一步结合OFDM技术，初步实现了水下图像的传输。

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Simulation and Test of an OFDM System for Middle-Range Uwa Communication

OFDM中程水声通信系统仿真及实验

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In the future high-tech research fields, UWA communications technology has become an active research field.

在未来的高科技研究领域中，水声通信技术已成为研究热点之一。

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In this subject the PDS system is used to realize UWA communication.

在本课题中采用了PDS（Pattern-时延差编码）体制来实现水声通信。

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The technology shows a good application promise on UWA communications.

仿真计算结果表明该技术在水下声通信中有很好的应用前景。

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This article focuses on UWA channel modeling and simulation research.

本文主要进行水声信道的建模与仿真的研究工作。

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Design and Implementation of an Adaptive High Speed UWA Voice Communication System

高速自适应水声语音系统的设计与实现

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In fact, in modern-day computing, SaaS can only be successful if it is built using RIA technology because the RIA methodology centers on the concept of user experience design ( UXD).

实际上，在如今的计算中，只有使用RIA技术构建的SaaS才会成功，因为RIA方法以用户体验设计（UXD）的概念为中心。

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The primary objective of UXD is to identify what will make the application most useful for the intended customer base and including that knowledge as part of the design.

UXD的主要目的是，确定哪些特性会让应用程序对于目标客户最有价值，并在设计中融入这些知识。

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This approach includes a process known as user experience design ( UXD), where the GUI is designed by a product team rather than the development team.

这种方式包含一个称为用户体验设计（UXD）的流程，在这个流程中由产品团队而不是开发团队设计GUI。

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