optical OFDM - Odds and Ends

This is prob­a­bly gonna be the last of the OFDM posts around here, since I’m no longer work­ing on OFDM-relat­ed top­ics. The next post was sup­posed to be about recep­tion of opti­cal OFDM sig­nals, and the one after that maybe about the var­i­ous imped­i­ments that can occur in spe­cif­ic types of receivers (e.g. opti­cal beat inter­fer­ence). There might have been some­thing about clip­ping and quan­ti­za­tion – though it seems that this is not very inter­est­ing to a lot of peo­ple (my OFC sub­mis­sion on this was reject­ed) – but some­one will have to do that now, I guess.

Any­way, for the OFDM receivers post I had start­ed to work on a hier­ar­chy like in the OFDM gen­er­a­tion post. This was the cur­rent state when I stopped:

Fig. 1: Hier­ar­chy of OFDM receiv­er vari­ants.

It might not be the best way to struc­ture the mul­ti­tude of receivers and it doesn’t show which receiv­er goes with which trans­mis­sion method, but it’ll have to do. For now at least…


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2 Comments

  • Hi Mar­cus!
    First I want to con­grat­u­late you for your Opti­cal OFDM posts. And say THANK YOU because I final­ly could under­stand what OOFDM is and the dif­fer­ent ways to gen­er­ate the opti­cal OFDM sig­nal. You are amaz­ing­ly clear in your expo­si­tion! Now, I can’t com­plete­ly get how the sig­nal is received. I need your help! Do you have even a draft of this post you sup­posed to do? Please, I real­ly need your help to under­stand this top­ic.
    Thanks in advance, best regards.
    Pablo (insolitasde_aurora@yahoo.com.mx)

  • Marcus wrote:

    Sor­ry, but I haven’t thought about OFDM for over a year now. I don’t think I could be of much help nowa­days. You should take a look at the book Orthog­o­nal Fre­quen­cy Divi­sion Mul­ti­plex­ing for Opti­cal Com­mu­ni­ca­tions by Shieh and Djord­je­vich. It’s a pret­ty sol­id book on that top­ic.

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