.png){kind=icon}
返回
Two-Stage Code Acquisition in Wireless Optical CDMA Communications Using Optical Orthogonal Codes
.png){kind=icon}
OA
AI
DOI：10.1109/TCOMM.2016.2577685.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
In this paper, we analyze the performance of code acquisition system in atmospheric optical code division multiple access (OCDMA) communications using optical orthogonal codes. Memory introduced by temporal correlation of optical fading process precludes us from using the Markov chain model for a code acquisition analysis. By considering this issue, we discuss how to extend the applicability of the Markov chain model to the atmospheric OCDMA communications. We analyze and compare the performance of correlator and chip level detector (CLD) structures in the acquisition system. In our analysis, we consider the effects of free space optical channel impairments, multiple access interference, and receiver thermal noise in the context of semi-classical photon-counting approach. Furthermore, we evaluate the performance of various two stage schemes that utilize different combinations of active correlator, matched filter, and CLD in search and verification stages, and we find the optimum acquisition scheme among them. Numerical results show significant improvement in reducing the acquisition time and required power for synchronization using our optimum scheme in the wireless OCDMA communications.
Keyword:
Optical code division multiple access (OCDMA)
free space optical (FSO)
acquisition
Markov chain
correlator
chip level detector (CLD)
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
8.3
论文数:
1.2W
被引数:
3.6W
机构
引用论文
.png){kind=icon}
分享收藏On Efficient Code Acquisition of Optical Orthogonal Codes in Optical CDMA Systems光CDMA系统中光正交码的有效码捕获
PREAI
分享收藏
查看更多内容