Two-level modulation scheme to reduce latency for optical mobile fronthaul networks | Zendy

Jiun-Yu Sung | Zendy; ChiWai Chow | Zendy; ChienHung Yeh | Zendy; Gee-Kung Chang | Zendy

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Two-level modulation scheme to reduce latency for optical mobile fronthaul networks

Author(s) -

Jiun-Yu Sung,

ChiWai Chow,

ChienHung Yeh,

Gee-Kung Chang

Publication year - 2016

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.24.025767

Subject(s) - passive optical network , orthogonal frequency division multiplexing , computer science , amplitude shift keying , photodiode , electronic engineering , quadrature amplitude modulation , modulation (music) , latency (audio) , wavelength division multiplexing , low latency (capital markets) , bit error rate , telecommunications , computer network , optics , physics , phase shift keying , engineering , decoding methods , wavelength , channel (broadcasting) , acoustics

A system using optical two-level orthogonal-frequency-division-multiplexing (OFDM) - amplitude-shift-keying (ASK) modulation is proposed and demonstrated to reduce the processing latency for the optical mobile fronthaul networks. At the proposed remote-radio-head (RRH), the high data rate OFDM signal does not need to be processed, but is directly launched into a high speed photodiode (HSPD) and subsequently emitted by an antenna. Only a low bandwidth PD is needed to recover the low data rate ASK control signal. Hence, it is simple and provides low-latency. Furthermore, transporting the proposed system over the already deployed optical-distribution-networks (ODNs) of passive-optical-networks (PONs) is also demonstrated with 256 ODN split-ratios.

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