A Blind Timing Synchronization Algorithm for DCO-OFDM VLC Systems

被引：15
|
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
收藏
页码：1121 / 1124
页数：4
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