K-Over-L Multidimensional Position Modulation
Journal article, 2014
We analyze a family of modulation formats based on multidimensional position modulation (MDPM) with multiple pulses per frame (K-over-L-MDPM) in combination with quadrature phase shift keying (QPSK), polarization multiplexed QPSK (PM-QPSK) and polarization-switched QPSK (PS-QPSK) for coherent communication systems. MDPM is a generalization of pulse position modulation where different pulse slots can be realized by time slots, polarization states, frequencies, modes of multimode fibers, cores in multicore fibers or a combination of these. We show that by using K-over-L-MDPM with QPSK, it is possible to simultaneously increase both the spectral efficiency and the asymptotic power efficiency over QPSK. We also identify K-ary inverse-MDPM (KiMDPM-QPSK) as the special case of K-over(K -1)-MDPM and show that 4iMDPM-QPSK has a 1.25 dB increased asymptotic power efficiency over QPSK with a maintained spectral efficiency.
multidimensional position modulation (MDPM)
power efficiency
spectral efficiency
Digital modulation
multicore fiber
pulse position modulation (PPM)
sensitivity
optical fiber communication
polarization-switched quadrature phase shift keying (PS-QPSK)
quadrature phase shift keying (QPSK)
multi-pulse position modulation (MPPM)
Author
Tobias Eriksson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Pontus Johannisson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Benjamin Puttnam
Japan National Institute of Information and Communications Technology
Erik Agrell
Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner
Peter Andrekson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Magnus Karlsson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Journal of Lightwave Technology
0733-8724 (ISSN)
Vol. 32 12 2254-2262 6819002Subject Categories (SSIF 2011)
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/jlt.2014.2322117