Nerd Rage

A while back I posted an arti­cle on Sig­nal Sta­tis­tics for OFDM. Orig­i­nally, this would have included OTDM also, but it grew too long. So it was split into two parts. This is the sec­ond part. Please read the orig­i­nal arti­cle first, as it explains much of the ter­mi­nol­ogy and the present arti­cle by itself …

More or less the final act of my career as an aca­d­e­mic researcher, I put the ideas of the post the Art of Nyquist WDM into a sub­mis­sion to Pho­ton­ics Tech­nol­ogy Let­ters – with a few extra sim­u­la­tions and fig­ures that I thought showed the advan­tages and draw­backs of the con­cept quite well. Alas, I …

Nyquist WDM is a (in my opin­ion) quite promis­ing method to gen­er­ate future “super­chan­nels” with bit rates beyond 500 Gbps by con­cate­nat­ing mul­ti­ple chan­nels very close to each other spec­trally after fil­ter­ing each of them very, very tightly with a fil­ter that approx­i­mates a rec­tan­gu­lar trans­fer func­tion [1]. Even Chang Liu pointed out (twice) at …