| 扩频技术:历史、现状及发展 |
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| 引用本文： | 丁溯泉,杨知行,潘长勇,郭兴波.扩频技术:历史、现状及发展[J].国际商务研究,2004,44(6):1-6. |
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| 作者姓名： | 丁溯泉 杨知行 潘长勇 郭兴波 |
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| 作者单位： | 上海对外贸易学院 |
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| 摘 要： | 如果说,要准确地理解、认识和把握"入世"对中国经济的影响,那末,首先应该是体制变革的深远影响,然后才是部门行业的利弊得失。而这种体制性的挑战,则大体上由5个既互相联系又彼此制约的关键环节所构成。
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| 关 键 词： | 政府职能的转变 法律规章的调整 行业协会的再造 金融制度的改革 社会信用体系的构建 |
| 文章编号： | 1006-1894(2004)06-0001-03 |
| 修稿时间： | 2004/4/6 0:00:00 |
Spread Spectrum Technology:History, Status quo, and Perspective |
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| DING Su-quan,YANG Zhi-xing,PAN Chang-yong,GUO Xing-bo Electronic Engineering,Tsinghua University,Beijing,China.Spread Spectrum Technology:History, Status quo, and Perspective[J].International Business Research,2004,44(6):1-6. |
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| Authors: | DING Su-quan YANG Zhi-xing PAN Chang-yong GUO Xing-bo Electronic Engineering Tsinghua University Beijing China |
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| Abstract: | The history of Spread Spectrum (SS) technology is reviewed from military anti-jaming communications and requirement for spectrum allocation of Personnal Communications Services (PCS),with emphasis on the present research situation of code acquisition and multiuser detection (MUD) of Direct Sequence Spread Spectrum (DSSS). Based on the development of future wireless communications system (4G), the perspective of SS is given, with the discussion on Ultra-Wide Band (UWB), multicarrier modulation, and Software Defined Radio (SDR). Finally, some interesting conclusions are presented. |
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| Keywords: | Spread spectrum Code acquisition Multiuser detection Ultra-Wide band Multicarrier modulation Software defined radio |
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