摘要：
丢包现象严重影响VoIP的通话语音质量。WSOLA(Waveform Similarity Based Overlap-Add)算法是一种基于接收端的丢包隐藏方法,可以较好地提高语音质量。在介绍WSOLA算法原理的基础上,针对该算法中计算互相关系数所需计算量较大,会增加过多计算延时的问题,提出一种互相关系数计算的改进方法。最后通过仿真对重建语音信号质量进行了对比。
作者机构：
[李艳红; 杜小坤] College of Computer Science, South-Central University for Nationalities, Wuhan 430074, China;[张聪] School of Mathematic and Computer Science, Wuhan Polytechnic University, Wuhan 430023, China;[李国徽] School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
通讯机构：
College of Computer Science, South-Central University for Nationalities, China
作者机构：
[Zhang, Cong; Zhang, Fan] Wuhan Polytech Univ, Sch Math & Comp Sci, Wuhan, Peoples R China.;[Zhang, Fan] Hangzhou Dianzi Univ, Coll Commun Engn, Hangzhou, Zhejiang, Peoples R China.;[Xu, Mingdi] Wuhan Digital Engn Inst, Syst Software Dept, Wuhan, Peoples R China.;[Yang, Minghui] Minist Publ Secur, Key Lab Informat Network Secur, Shanghai, Peoples R China.;[Yang, Minghui] Minist Publ Secur, Res Inst 3, Shanghai, Peoples R China.
会议名称：
International Conference on Computer Sciences and Applications (CSA)
会议时间：
DEC 14-15, 2013
会议地点：
Hubei Univ Technol, Wuhan, PEOPLES R CHINA
会议主办单位：
Hubei Univ Technol
关键词：
communication security;mobile intelligent terminal;AES encryption
摘要：
Currently, various mobile intelligent terminals have penetrated into our daily life. But at the same time, security and privacy issues of mobile intelligent terminals become a serious problem. In this paper, we present an approach to ensure the secure communication between mobile intelligent terminals. Our idea is to restrict that plaintext information can only exist inside mobile intelligent terminals, and any information outside of mobile intelligent terminals must be automatically encrypted. Experimental results show that our approach is efficient, and incur only 2%similar to 3% performance losses.
作者机构：
[李艳红] College of Computer Science, South-Central University for Nationalities, Wuhan 430074, China;[张聪] School of Mathematics and Computer Science, Wuhan Polytechnic University, Wuhan 430023, China;[李国徽] School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
通讯机构：
College of Computer Science, South-Central University for Nationalities, China
期刊：
Lecture Notes in Electrical Engineering,2013年227(1):679-686 ISSN：1876-1100
通讯作者：
Chen, X.(xfangchen@126.com)
作者机构：
[Chen, Xiufang] College of Electrical and Electronic Engineering, Wuhan Polytechnic University, Wuhan, China;[Zhang, Chaoping] Department of Physical and Electronic Engineering, Leshan Normal University, Leshan, China
关键词：
World Wide Web;Geographical Information Systems;three-tier mode;Component Object Model;three-tier browser-server architecture
摘要：
We designed an Efficient World Wide Web Geographical Information Systems (WebGis). We firstly presented a novel three-tier mode of WebGis. Then, we designed an efficient Gis server. Finally, we designed in detail the function of each module.
