DocumentCode :
1558298
Title :
On the Multidimensional Signal Constellation Design for Few-Mode-Fiber-Based High-Speed Optical Transmission
Author :
Djordjevic, Ivan B. ; Liu, Tao ; Xu, Lei ; Wang, Ting
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA
Volume :
4
Issue :
5
fYear :
2012
Firstpage :
1325
Lastpage :
1332
Abstract :
In this paper, we propose an algorithm to determine the -dimensional optimum signal constellation design (DD-OSCD), in minimum mean-square error sense, for channel capacity achieving source distribution. We then describe a -dimensional coded modulation scheme, employing orbital angular momentum modes, two polarization states, and two in-phase/quadrature coordinates, suitable for use in future few-mode fiber (FMF) applications. Monte Carlo simulations indicate that the proposed low-density parity-check (LDPC)-coded polarization-division-multiplexed (PDM) quadrature-multiplexed (QM) DD-OSCD significantly outperforms conventional PDM-QAM (by 4.32 dB for 64-ary 3-D constellation at a BER of ). In addition, the DD-OSCD outperforms sphere packing constellations (by 0.33 dB for 8-ary 3-D constellation at a BER of ).
Keywords :
Monte Carlo methods; channel capacity; least mean squares methods; multiplexing; optical fibre communication; parity check codes; Monte Carlo simulations; channel capacity; dimensional optimum signal constellation design; few-mode fiber applications; few-mode-fiber-based high-speed optical transmission; low-density parity-check-coded polarization-division-multiplexed; minimum mean-square error sense; multidimensional signal constellation design; orbital angular momentum modes; quadrature-multiplexed; source distribution; sphere packing constellations; Bit error rate; Constellation diagram; Multiplexing; Optical polarization; Optical sensors; Parity check codes; Microwave photonics signal processing; few-mode/few-core fiber optics communications; low-density parity-check (LDPC) codes; multidimensional coded modulation; orbital angular momentum (OAM) modulation;
fLanguage :
English
Journal_Title :
Photonics Journal, IEEE
Publisher :
ieee
ISSN :
1943-0655
Type :
jour
DOI :
10.1109/JPHOT.2012.2208623
Filename :
6243161
Link To Document :
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