TY - JOUR
T1 - Adaptive loading algorithms for IMDD optical OFDM PON systems using directly modulated lasers
AU - Giacoumidis, E.
AU - Kavatzikidis, A.
AU - Tsokanos, Athanasios
AU - Tang, J. M.
AU - Tomkos, I.
PY - 2012
Y1 - 2012
N2 - A detailed study on the effectiveness of three proposed optical orthogonal frequency-division multiplexing (OOFDM) adaptive loading algorithms (ALAs) is conducted, addressing, for the first time, a number of crucial issues related to OOFDM directly modulated laser-based intensity-modulated and direct-detected passive optical networks (PONs). The ALAs include the power loading (PL), bit loading, and bit-and-power loading (BPL) algorithms. It is shown that in comparison with the most sophisticated BPL algorithm, the simplest PL algorithm is effective in escalating a single-channel OOFDM PON performance to its maximum potential. On the other hand, for multi-channel OOFDM PON and when employing a large number of subcarriers and high digital-to-analog/analog-to-digital converter sampling speed, the BPL algorithm should be adopted. The utilization of the three ALAs can also extend the optimum clipping ratio range up to at least 3 dB compared to a conventional identical modulation scheme.
AB - A detailed study on the effectiveness of three proposed optical orthogonal frequency-division multiplexing (OOFDM) adaptive loading algorithms (ALAs) is conducted, addressing, for the first time, a number of crucial issues related to OOFDM directly modulated laser-based intensity-modulated and direct-detected passive optical networks (PONs). The ALAs include the power loading (PL), bit loading, and bit-and-power loading (BPL) algorithms. It is shown that in comparison with the most sophisticated BPL algorithm, the simplest PL algorithm is effective in escalating a single-channel OOFDM PON performance to its maximum potential. On the other hand, for multi-channel OOFDM PON and when employing a large number of subcarriers and high digital-to-analog/analog-to-digital converter sampling speed, the BPL algorithm should be adopted. The utilization of the three ALAs can also extend the optimum clipping ratio range up to at least 3 dB compared to a conventional identical modulation scheme.
KW - Modulation
KW - Multiplexing
KW - OFDM
KW - Optical fiber communication
KW - Wavelength-division multiplexing
UR - https://www.osapublishing.org/jocn/fulltext.cfm?uri=jocn-4-10-769&id=242380
U2 - 10.1364/JOCN.4.000769
DO - 10.1364/JOCN.4.000769
M3 - Article
AN - SCOPUS:84867836666
SN - 1943-0620
VL - 4
SP - 769
EP - 778
JO - Journal of Optical Communications and Networking
JF - Journal of Optical Communications and Networking
IS - 10
M1 - 6331138
ER -