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Subset-Optimized Polarization-Multiplexed PSK for Fiber-Optic Communications

Martin Sjödin (Institutionen för mikroteknologi och nanovetenskap, Fotonik) ; Erik Agrell (Institutionen för signaler och system, Kommunikationssystem) ; Magnus Karlsson (Institutionen för mikroteknologi och nanovetenskap, Fotonik)
Ieee Communications Letters (1089-7798). Vol. 17 (2013), 5, p. 838-840.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Polarization-multiplexing, quadrature phase-shift keying, power-efficiency, four-dimensional modulation

Denna post skapades 2013-07-12. Senast ändrad 2016-04-28.
CPL Pubid: 180122


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