Error-rate floors in differential n-level phase-shift-keying coherent receivers employing electronic dispersion equalisation

• A model for the phase noise influence in differential n-level phase shift keying (nPSK) systems and 2nlevel quadrature amplitude modulated (2nQAM) systems employing electronic dispersion equalization and quadruple carrier phase extraction is presented. The model includes the dispersion equalization enhanced local oscillator phase noise influence. Numerical results for phase noise error-rate floors are given for dual polarization (DQPSK, Dl6PSK and D64PSK) system configurations with basic baud-rate of 25 GS/s. The transmission distance in excess of 1000 km requires local oscillator lasers with sub-MHz linewidth.

Ämnesord

NATURVETENSKAP  -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)

Nyckelord

Amplitude modulated; Baud rate; Carrier phase; Coherent receivers; Coherent system; Dual-polarizations; Electronic dispersions; Equalisation; Local oscillators; N-level phase-shift-keying systems; Noise influence; Numerical results; System configurations; Transmission distances

Dispersions; Floors; Phase noise; Phase shift

Phase shift keying

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)