Optical Ranging and Communication method based on All-phase FFT

被引：0

作者：

Li, Zening ^{[1
]}

Chen, Gang ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Elect Engn, Riverside, CA 92521 USA

来源：

LASER COMMUNICATION AND PROPAGATION THROUGH THE ATMOSPHERE AND OCEANS III | 2014年 / 9224卷

关键词：

Optical; ranging; communication; OFDM; all-phase FFT;

D O I：

10.1117/12.2064018

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes an optical ranging and communication method based on all-phase fast fourier transform (FFT). This kind of system is mainly designed for vehicle safety application. Particularly, the phase shift of the reflecting orthogonal frequency division multiplexing (OFDM) symbol is measured to determine the signal time of flight. Then the distance is calculated according to the time of flight. Several key factors affecting the phase measurement accuracy are studied. The all-phase FFT, which can reduce the effects of frequency offset, phase noise and the inter-carrier interference (ICI), is applied to measure the OFDM symbol phase shift.

引用

页数：6

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