Details

Autor(en) / Beteiligte

• Karlsson, Magnus
• Agrell, Erik

Titel

Which is the most power-efficient modulation format in optical links?

Ist Teil von

• Optics express, 2009-06, Vol.17 (13), p.10814-10819

Ort / Verlag

United States

Erscheinungsjahr

2009

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• By exploiting the electromagnetic wave's four-dimensional signal space, we find that for the additive white Gaussian noise channel, the modulation format with best sensitivity to be an 8-level format with 1.76 dB asymptotic gain over BPSK, for uncoded optical transmission with coherent detection. Low-complexity modulators are presented for the format, as well as an interpretation in terms of quantum-limited sensitivity.