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Research on The Spread Spectrum Communication Systems.

扩频通信系统研究。

基本信息

批准号：
63302031
负责人：
MARUBAYASHI Gen
金额：
$ 5.7万
依托单位：
Nagaoka University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-63302031/
关键词：
Electrical Communication Spread Spectrum Multiple Access Code Division Radio Engineering

项目摘要

From April 1988 to March 1990 , study meetings have been held for eight times major results of the studies are summarized as follows.To increase the information transmission capacity is one of most important problems in the present day Spread Spectrum (abbr. SS in the following) systems. Various study works have been conducted in this field.G.Marubayashi & S.Tachikawa ( Nagaoka Univ. of Technology ) showed a possibility of improving transmission capacity by adopting Mary SS system. M.Hatori ( Univ.of Tokyo ) & N.Suehiro (Tokyo Engineering Univ.) proposed an efficient SSMA ( Spread Spectrum Multiple Access ) system using polyphase orthogonal sequence. Y.Tanada (Kagoshima Univ.) proposed an efficient SSMA system using real number orthogonal sequence. T.Hasegawa (Saitama Univ.) proposed a synchronous SSMA system using chip shift method.To find new application fields for the SS systems is also an important problem in the present state. Several research works have been conducted in this field.G.Marubayashi & S.Tachikawa studied applications for the electrical power line data transmission. M.Nakagawa (Keio Univ.) showed a possibility of application to the data carrier system. Y.Miyazaki (Toyohashi Univ.of Technology) investigated an application to the optical communication system.Applications to the consumer communication systems using weak radio wave are investigated by several research workers.Various novel circuit and system design techniques have been proposed. H.Imai & R.Kohno ( Yokohama National Univ.) showed a possibility of high speed synchronous acquisition system using generalized Geffe sequence. T.Hasegawa proposed an improved DLL circuit using the manchester code. S.Mori ( Keio Univ.) proposed an efficient high speed frequency synthesizer.Through these research works , future possibilities of the Spread Spectrum Systems seems to have enhanced greatly.

从1988年4月到1990年3月，共召开了8次研究会，主要研究成果如下：提高信息传输容量是当今扩频通信中最重要的问题之一。SS在下文中)系统。G.Marubayashi和S.Tchikawa(长冈大学)理工学院)展示了采用Mary SS系统提高传输能力的可能性。M.Hatori(东京大学)和N.Suehiro(东京工程大学)提出了一种基于多相正交序列的高效扩频多址系统。Y.Tanada(鹿儿岛大学)提出了一种基于实数正交序列的高效扩频多址系统。T.Hasegawa(崎玉大学)提出了一种基于码片移位的同步扩频多址系统，为扩频系统寻找新的应用领域也是目前面临的一个重要问题。该领域已经开展了一些研究工作。G.Marubayashi和S.Tchikawa研究了电力线数据传输的应用。M.Nakagawa(庆应义乌大学)显示了将其应用于数据载体系统的可能性。Y.Miyazaki(丰桥工业大学)研究了在光通信系统中的应用。几位研究人员研究了在使用弱无线电波的消费者通信系统中的应用。提出了各种新颖的电路和系统设计技术。H.Imai&R.Kohno(横滨国立大学)证明了利用广义Geffe序列实现高速同步捕获系统的可能性。T.Hasegawa提出了一种使用曼彻斯特编码的改进的DLL电路。S.Mori(庆应义乌大学)提出了一种高效的高速频率合成器，通过这些研究工作，扩频系统的未来可能性似乎大大增加。