基于拍频干扰消除接收机的直接检测光正交频分复用传输的理论与实验研究

Theoretical and experimental investigation of direct detection optical OFDM transmission using beat interference cancellation receiver.

作者信息

Nezamalhosseini S Alireza, Chen Lawrence R, Zhuge Qunbi, Malekiha Mahdi, Marvasti Farokh, Plant David V

机构信息

Department of Electrical and Computer Engineering, McGill University, Montreal (QC), H3A 2A4, Canada.

出版信息

Opt Express. 2013 Jul 1;21(13):15237-46. doi: 10.1364/OE.21.015237.

DOI:10.1364/OE.21.015237

PMID:23842309

Abstract

We theoretically and experimentally evaluate a beat interference cancellation receiver (BICR) for direct detection optical orthogonal frequency-division multiplexing (DD-OFDM) systems that improves the spectral efficiency (SE) by reducing the guard band between the optical carrier and the optical OFDM signal while mitigating the impact of signal-signal mixing interference (SSMI). Experimental results show that the bit-error-rate (BER) is improved by about three orders of magnitude compared to the conventional receiver after 320 km single-mode fiber (SMF) transmission for 10 Gb/s data with a 4-QAM modulation using reduced guard band single-sideband OFDM (RSSB-OFDM) signal with 1.67 bits/s/Hz SE.

摘要

我们在理论和实验上评估了一种用于直接检测光正交频分复用（DD-OFDM）系统的拍频干扰消除接收机（BICR），该接收机通过减小光载波与光OFDM信号之间的保护带，同时减轻信号-信号混合干扰（SSMI）的影响来提高频谱效率（SE）。实验结果表明，对于采用1.67比特/秒/赫兹SE的缩减保护带单边带OFDM（RSSB-OFDM）信号、以4-QAM调制进行10 Gb/s数据传输的情况，在经过320 km单模光纤（SMF）传输后，与传统接收机相比，误码率（BER）提高了约三个数量级。