Digitally Controlled Micro-LED Array for Linear Visible Light Communication Systems

IEEE Photonics Journal

卷:7

S. Zhao¹  T. Zhou¹  H. Qian²  S. Z. Cai² 

[1] Inf. Technol., Shanghai, China;

[2] Shanghai Inst. of Microsyst. &

关键词: light emitting diode (LED);    micro-LED array;    nonlinearity;    visible light communications;   

DOI  :  10.1109/JPHOT.2015.2424398

来源: DOAJ

【 摘 要 】

In a visible light communications (VLC) system, the frequency response of the light-emitting diode (LED) limits the signal bandwidth and, thus, becomes the bottleneck of the transmission data rate. The recent technology breakthrough of the micro-LED array has the potential to improve the modulation bandwidth of the LED by ten times. On the other hand, the nonlinearity of the micro-LED array is significant. Nonlinear distortion degrades system performance in both the achievable data rate and the transmission range. In this paper, we propose a digitally controlled micro-LED array architecture for the VLC system, which enjoys the benefit of wide modulation bandwidth of the micro-LED array and avoids the disadvantage of the nonlinear distortion. Compared with existing multiple LED structures, the proposed micro-LED array architecture shows robustness against nonlinear distortion.

【 授权许可】

Unknown