Open AccessEnergy efficient IM-DD OFDM-PON using dynamic SNR management and adaptive modulation
Author(s) -
Hirokazu Kimura,
Kota Asaka,
Hirotaka Nakamura,
Shunji Kimura,
Naoto Yoshimoto
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.001789
Subject(s) - computer science , modulation (music) , orthogonal frequency division multiplexing , bit error rate , electronic engineering , energy (signal processing) , signal to noise ratio (imaging) , link adaptation , efficient energy use , intensity modulation , optics , telecommunications , phase modulation , fading , physics , electrical engineering , channel (broadcasting) , phase noise , engineering , quantum mechanics , acoustics
This paper describes the demonstration of an energy efficient orthogonal frequency division multiplexing passive optical network using the dynamic signal to noise ratio (SNR) management and adaptive modulation. Controlling the calculation precision and modulation format minimizes the energy consumption of digital signal processor while satisfying the requirements of bit error ratio. We show that the calculation precision and modulation format can be optimized according to the optical received power, and realize a 58.7% effective energy efficiency per bit in an FPGA-based receiver experimentally.