Interplay of Bit Rate, Linewidth, Bandwidth, and Reach on Optical DMT and PAM With IMDD | IEEE Journals & Magazine | IEEE Xplore

Interplay of Bit Rate, Linewidth, Bandwidth, and Reach on Optical DMT and PAM With IMDD


Abstract:

We theoretically compare the performance of optical discrete multi-tone (DMT) and pulse amplitude modulation (PAM) using intensity modulated and direct detection. PAM is ...Show More

Abstract:

We theoretically compare the performance of optical discrete multi-tone (DMT) and pulse amplitude modulation (PAM) using intensity modulated and direct detection. PAM is a lower cost, lower complexity solution than DMT, however, it is more vulnerable to chromatic dispersion on the C-band. We compare DMT and PAM taking into consideration the interplay of laser linewidth, fiber length, transmission rate, and channel bandwidth. We use a semi-analytical model to examine bit error rates. We study how system parameters shift the performance advantages between DMT and PAM. Our model can also be used to find the best hardware solution and frequency band for a target modulation format and bit error rate.
Published in: IEEE Transactions on Communications ( Volume: 67, Issue: 4, April 2019)
Page(s): 2908 - 2913
Date of Publication: 13 January 2019

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