Receive Diversity-Based SNR Improvement in OPDM-OFDMA-PON Single-Wavelength Multiple Access

Sun Young Jung, Chang Hun Kim, Hyoung Joon Park, Inho Ha, Sang Kook Han

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

In order to accommodate the demands for the next-generation passive optical network (PON), it is necessary to maximize the transmission capacity and the multiple accesses (MAs) within a single wavelength. However, there is a serious problem that the optical beat interference (OBI) occurs in uplink MA. With optical pulse-division multiplexing (OPDM), the OBI can be reduced simply and effectively; thus, OPDM is a useful optical transmission technique for single-wavelength MA that offers various advantages. To increase the transmission capacity within the limited bandwidth of an optical modulator, we propose a signal-to-noise ratio (SNR) enhancement technique involving receive diversity achieved using the replica inevitably generated in OPDM. The SNR improvement was experimentally verified, via a 20-km optical transmission in OPDM-based single-wavelength MA. The enhanced SNR improves the modulation order and spectral efficiency, and relaxes the requirements of OPDM and the decoding complexity. The proposed replica-based receive diversity can increase the SNR of the uplink signal, reduce the OBI, and guarantees the advantages of OPDM; thus, it is a useful technique for effectively supporting the high data capacity and MA required for the next-generation PON.

Original languageEnglish
Article number8437132
Pages (from-to)4871-4879
Number of pages9
JournalJournal of Lightwave Technology
Volume36
Issue number20
DOIs
Publication statusPublished - 2018 Oct 15

Bibliographical note

Funding Information:
Manuscript received April 4, 2018; revised July 2, 2018; accepted August 4, 2018. Date of publication August 15, 2018; date of current version September 12, 2018. This work was supported by the ICT R&D program of MSIP/IITP, South Korea [2014-3-00538]. (Corresponding author: Sang-Kook Han.) The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail:, ssun1024@ yonsei.ac.kr; chris_kim@yonsei.ac.kr; phjokokok@yonsei.ac.kr; 91hainho@ yonsei.ac.kr; skhan@yonsei.ac.kr).

Publisher Copyright:
© 1983-2012 IEEE.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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