LDPC-Coded OFDM for Heterogeneous Access Optical Networks

Author

Djordjevic, Ivan B. ; Batshon, Hussam G.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA

Volume

2

Issue

4

fYear

2010

Firstpage

611

Lastpage

619

Abstract

In this paper, we propose a heterogeneous optical access networking scenario, in which communication links between source and destination nodes are heterogeneous, composed of free-space optical, plastic optical fiber (POF), and indoor infrared (IR) links. To deal with bandwidth limitations of POF and IR links, a power-variable rate-adaptive low-density parity-check (LDPC)-coded orthogonal frequency division multiplexing (OFDM) scheme is used, while to deal with atmospheric turbulence, the spatial diversity is used. The rate-adaptive LDPC codes are designed using a modified progressive edge-growth (MPEG) algorithm. We show that with the proposed heterogeneous communication systems, we can deliver a high-speed optical signal (40 Gb/s and beyond) to an end-user.

Keywords

OFDM modulation; diversity reception; optical fibre networks; optical links; parity check codes; LDPC-coded OFDM; atmospheric turbulence; communication links; free-space optical links; heterogeneous access optical networks; indoor infrared links; low-density parity-check; modified progressive edge-growth algorithm; orthogonal frequency division multiplexing; plastic optical fiber links; spatial diversity; Algorithm design and analysis; Bandwidth; High speed optical techniques; Internet; OFDM; Optical fiber communication; Optical fiber networks; Optical fibers; Parity check codes; Passive optical networks; Heterogeneous optical networking; access networks; adaptive power loading; low-density parity-check (LDPC) codes; orthogonal frequency division multiplexing (OFDM); rate-adaptive coding;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2010.2051943

Filename

5491028