A Blind Timing Synchronization Algorithm for DCO-OFDM VLC Systems

被引：16

作者：

Kishore, Vejandla ^{[1
]}

Prasad, Valluri Siva ^{[2
]}

Mani, V. V. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Elect & Commun Engn, Warangal 506004, Andhra Pradesh, India

[2] SRKR Engn Coll, Dept Elect & Commun Engn, Bhimavaram 534204, India

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2020年 / 32卷 / 17期

关键词：

Synchronization; OFDM; Nonlinear optics; Software; Correlation; Adaptive optics; Visible light communication systems (VLC); DC biased optical orthogonal frequency division multiplexing (DCO-OFDM); timing synchronization; universal software defined radio peripheral (USRP); FREQUENCY OFFSET;

D O I：

10.1109/LPT.2020.3013447

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：

Visible Light Communication (VLC) systems are more vulnerable to timing synchronization problems due to the employed incoherent modulation scheme. In this work, a blind timing synchronization algorithm is introduced to DC biased Optical Orthogonal Frequency Division Multiplexing (DCO-OFDM) systems, based on cyclostationarity of the received signal that relies on second-order statistics only. It does not require any channel impulse response, as it is a blind estimator. The performance of the proposed estimator is evaluated using computer simulations in the Lab-view software and also validated through experimental results obtained using the VLC testbed using Universal Software defined Radio Peripheral (USRP) hardware.

引用

页码：1121 / 1124

页数：4

共 8 条

[1] Blind estimation of symbol timing and carrier frequency offset in wireless OFDM systems [J].