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OFDM for Optical Communications by Ivan Djordjevic, William Shieh

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Chapter 4 Signal Processing for Optical OFDM

4.1 Introduction

One of the central features that sets orthogonal frequency-division multiplexing (OFDM) apart from single-carrier modulation is its uniqueness of signal processing. The single-carrier technique has been employed in optical communication systems for the past three decades. It is no surprise that OFDM signal processing seems to be quite strange to an optical engineer at first glance. However, as alluded to in Chapter 1, OFDM technology is exceptionally scalable for migration to higher data rate. Once the algorithms and hardware designs are developed for the current-generation product, it is very likely that these skill sets can be incorporated for the next-generation product. In this ...

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