Code division multiple-access techniques in optical fiber networks. I. Fundamental principles
Code division multiple-access techniques in optical fiber networks. I. Fundamental principles
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DOI：
10.1109/26.31181
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发表时间：
1989-08
期刊：
影响因子：
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通讯作者：
J. Salehi
中科院分区：
文献类型：
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作者：
J. Salehi
对光纤代码分割多访问（FO-CDMA）进行了检查，该技术将低信息数据速率映射到非常高的地址代码（签名序列）中，以实现随机的，异步的目的在许多用户中，没有网络控制的通信。讨论了使用光纤信号处理技术实现多种访问能力的特殊类签名序列的需求。在实验中介绍了一类称为光学正交代码（OOC）的签名序列（OOC），这些序列提供了FO-CDMA所需的自动和互相关属性，并在实验中使用并使用以显示FO-CDMA的原理。该实验证明了代码的自动和互相关特性。引入了光磁盘模式的概念，是代表OOC的等效方式。模式用于得出与任何两个干扰OOC相关的概率密度函数。提出了对不同干扰模式的详细研究，并确定了最强和最弱的干扰模式。 >
An examination is made of fiber-optic code-division multiple-access (FO-CDMA), a technique in which low information data rates are mapped into very-high-rate address codes (signature sequences) for the purpose of achieving random, asynchronous communications free of network control, among many users. The need for a special class of signature sequences to achieve the multiple-access capability using fiber-optic signal processing techniques is discussed. A class of signature sequences called optical orthogonal codes (OOCs) that provide the auto- and cross-correlation properties required for FO-CDMA is introduced and used in an experiment to show the principles of FO-CDMA. The experiment demonstrates the auto- and cross-correlation properties of the codes. The concept of optical disk patterns, an equivalent way of representing the OOCs, is introduced. The patterns are used to derive the probability density functions associated with any two interfering OOCs. A detailed study of different interference patterns is presented, and the strongest and the weakest interference patterns are determined. >