Orthogonal frequency division multiplexing (OFDM) for optical communication

Pao Yue-kong Library Electronic Theses Database

Orthogonal frequency division multiplexing (OFDM) for optical communication


Author: Zhang, Hao
Title: Orthogonal frequency division multiplexing (OFDM) for optical communication
Degree: M.Sc.
Year: 2014
Subject: Orthogonal frequency division multiplexing.
Optical communications.
Hong Kong Polytechnic University -- Dissertations
Department: Faculty of Engineering
Pages: xiii, 71 leaves : color illustrations ; 30 cm
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2680825
URI: http://theses.lib.polyu.edu.hk/handle/200/8137
Abstract: Orthogonal frequency division multiplexing (OFDM) [20] is a modern technique using MCM [31] for multicarrier data transmission. It has been widely used in RF wireless communication systems. However, for optical fibre based OFDM, this technique has only attracted much attention in recent years. Although there are some similarities to its to its RF counterpart, the difference in transmission channel and transmitter implementation has offered the incentive to carry out further study in optical OFDM systems. Compare to single carrier modulation, OFDM shows many advantages in optical access network and Elastic Optical Networks (EON) due to its tolerance to dispersion and flexibility in bandwidth provisioning. Optical OFDM can be divided into two categories: Direct Detection Optical OFDM [4] and Coherent Detection Optical OFDM [21]. Both of them have advantages and disadvantages. In short distance transmission systems, DDO-OFDM [4] can benefit from its low cost and simple implementation. However, in long distance transmission, CO-OFDM [21] can enable high order modulation, high transmission speed, flexible bandwidth implementation without modifying optical hardware. In this dissertation, theoretical study and simulation using VPI and MATLAB will be carried out to study the design of OFDM transmitters. Results obtained are described and analyzed.

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