title: Demonstration of bi-directional LED visible light communication using TDD traffic with mitigation of reflection interference.
abstract: In this work, we experimentally demonstrate a bi-directional transmission link using light emitting diode (LED) visible light communication (VLC) for both downlink and uplink paths. Time-division-duplex (TDD) is proposed and demonstrated to significantly eliminate the reflection interference in VLC. A free space bi-directional transmission of 2 m using simple on-off keying (OOK) modulation with bit error rate (BER) of < 10(-5) in both directions are achieved. Moreover, the influence of reflection interference is analyzed, showing the proposed scheme can significantly eliminate the reflection interference.
authors.affiliation: Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
authors.forename: Y F
authors.initials: YF
authors.lastname: Liu
authors.forename: C H
authors.initials: CH
authors.lastname: Yeh
authors.forename: C W
authors.initials: CW
authors.lastname: Chow
authors.forename: Y
authors.initials: Y
authors.lastname: Liu
authors.forename: Y L
authors.initials: YL
authors.lastname: Liu
authors.forename: H K
authors.initials: HK
authors.lastname: Tsang
mesh_terms: D016477:Artifacts; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D055096:Optical Devices; D012666:Semiconductors; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*