一种用于具有强度调制和直接检测的全光正交频分复用系统的简单峰均功率比降低方案。

A simple peak-to-average power ratio reduction scheme for all optical orthogonal frequency division multiplexing systems with intensity modulation and direct detection.

作者信息

Liang Xiaojun, Li Wei, Ma Weidong, Wang Kai

机构信息

Wuhan National Lab for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P.R.China.

出版信息

Opt Express. 2009 Aug 31;17(18):15614-22. doi: 10.1364/OE.17.015614.

DOI:10.1364/OE.17.015614

PMID:19724560

Abstract

This paper fundamentally investigates the peak-to-average power ratio (PAPR) theory in all optical orthogonal frequency division multiplexing (OFDM) systems which employ intensity modulation-direct detection (IM-DD) scheme. We propose a low-complexity PAPR reduction scheme based on phase pre-emphasis. Simulations show that the proposed scheme brings about a 3.74 dB PAPR reduction and better nonlinear impairment tolerance in a 16x10Gb/s IM-DD all optical OFDM system.

摘要

本文从根本上研究了采用强度调制直接检测（IM-DD）方案的全光正交频分复用（OFDM）系统中的峰均功率比（PAPR）理论。我们提出了一种基于相位预加重的低复杂度PAPR降低方案。仿真表明，该方案在16×10Gb/s IM-DD全光OFDM系统中实现了3.74dB的PAPR降低，并具有更好的非线性损伤容忍度。