Optical Wireless Communications by Murat Uysal Carlo Capsoni Zabih Ghassemlooy Anthony Boucouvalas & Eszter Udvary

Author:Murat Uysal, Carlo Capsoni, Zabih Ghassemlooy, Anthony Boucouvalas & Eszter Udvary
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

(13.34)

are the corresponding unit energy pulse shapes at subcarrier frequency , see Fig. 13.9 (left), one block of the Tx-signal (without CP) can be written as

Fig. 13.9Basis functions for DC-biased SSC-QAM with a rectangular pulse shaping (left) and for DC-biased OPAM (right)

(13.35)

where , , denote complex valued QAM-symbols. For a modulation order per orthogonal component, the required minimum DC-bias P to avoid clipping and to obtain a perfect DC-balance is , which gives a minimum Euclidean distance (photodiode output) and an AWGN power penalty of

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