TY - JOUR
T1 - On the multidimensional signal constellation design for few-mode-fiber-based high-speed optical transmission
AU - Djordjevic, Ivan B.
AU - Liu, Tao
AU - Xu, Lei
AU - Wang, Ting
N1 - Funding Information:
Manuscript received June 18, 2012; revised July 8, 2012; accepted July 10, 2012. Date of publication July 18, 2012; date of current version July 27, 2012. This work was supported in part by the National Science Foundation under Grants CCF-0952711 and EEC-0812072 and by NEC Laboratories America, Inc. Corresponding author: I. B. Djordjevic (e-mail: [email protected]).
PY - 2012
Y1 - 2012
N2 - In this paper, we propose an algorithm to determine the D-dimensional optimum signal constellation design (DD-OSCD), in minimum mean-square error sense, for channel capacity achieving source distribution. We then describe a D = 4-dimensional coded modulation scheme, employing N 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 10 -7). In addition, the DD-OSCD outperforms sphere packing constellations (by 0.33 dB for 8-ary 3-D constellation at a BER of 10 -7).
AB - In this paper, we propose an algorithm to determine the D-dimensional optimum signal constellation design (DD-OSCD), in minimum mean-square error sense, for channel capacity achieving source distribution. We then describe a D = 4-dimensional coded modulation scheme, employing N 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 10 -7). In addition, the DD-OSCD outperforms sphere packing constellations (by 0.33 dB for 8-ary 3-D constellation at a BER of 10 -7).
KW - Microwave photonics signal processing
KW - few-mode/few-core fiber optics ommunications
KW - low-density parity-check (LDPC) codes
KW - multidimensional coded modulation
KW - orbital angular momentum (OAM) modulation
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U2 - 10.1109/JPHOT.2012.2208623
DO - 10.1109/JPHOT.2012.2208623
M3 - Article
AN - SCOPUS:84864615580
SN - 1943-0655
VL - 4
SP - 1325
EP - 1332
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 5
M1 - 6243161
ER -