Subset-Optimized Polarization-Multiplexed PSK for Fiber-Optic Communications
Artikel i vetenskaplig tidskrift, 2013

A more power-efficient modulation format than polarization-multiplexed quadrature phase-shift keying (PM-QPSK) can be obtained by optimizing the amplitude ratio between symbols with odd and even parity in the PM-QPSK constellation. The optimal amplitude ratio approaches the golden ratio at high signal-to-noise ratio (SNR), yielding a 0.44 dB increase in asymptotic power efficiency compared to PM-QPSK. Union bound expressions are derived for the bit and symbol error rate of the new format, which together with Monte Carlo simulations give the power efficiency at both low and high SNR. A similar optimization performed on PM-8PSK gains 1.25 dB.


four-dimensional modulation


quadrature phase-shift keying


Martin E Sjödin

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Erik Agrell

Chalmers, Signaler och system, Kommunikations- och antennsystem, Kommunikationssystem

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

IEEE Communications Letters

1089-7798 (ISSN)

Vol. 17 5 838-840 6476943



Annan elektroteknik och elektronik



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