Novel Techniques for Combating DC Offset in Diversity Combined ACO-OFDM

被引：25

作者：

Dissanayake, Sarangi D. ^{[1
]}

Armstrong, Jean ^{[1
]}

机构：

[1] Monash Univ, Dept Elect & Comp Syst Engn, Clayton, Vic 3800, Australia

来源：

IEEE COMMUNICATIONS LETTERS | 2011年 / 15卷 / 11期

基金：

澳大利亚研究理事会;

关键词：

ACO-OFDM; diversity combining; DC offset; intensity modulation; direct detection; optical communications;

D O I：

10.1109/LCOMM.2011.092011.110709

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this paper we present two novel techniques of diversity combined asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM). The techniques are able to achieve better performance than conventional ACO-OFDM while being unaffected by the variations in the zeroth subcarrier. Zeroth subcarrier variations are caused by DC offsets present in the biasing of the transmitter light emitting diode and receiver photo diode, and low frequency interference due to background noise sources such as fluorescent and incandescent lamps. Simulation results are presented which show that the new methods achieve better performance than ACO-OFDM.

引用

页码：1237 / 1239

页数：3

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