Upstream OCDMA-TDM passive optical network using a novel sourceless ONU

Author

Gharaei, Mohammad ; Lepers, Catherine ; Gallion, Philippe

Author_Institution

SAMOVAR, Telecom SudParis, Evry, France

fYear

2012

fDate

20-22 June 2012

Firstpage

1

Lastpage

5

Abstract

OCDMA over conventional TDM PON leads to increase access network capacity by multiplexing TDM signals with OCDMA codes. We propose a novel sourceless ONU for OCDMA-TDM PON within a centralized light source placed at OLT. Sparser and longer extended quadratic congruence (EQC) codes with good correlation properties are used as optical CDMA en/decoders. However, multiple access interference (MAI) can limit the number of simultaneous users in this system. We analyze BER performance of sourceless OCDMA-TDM PON using four different EQC codes. Finally, network scalability and throughput performance of the proposed scheme are analyzed. These analyses over OCDMA-TDM PON show an upgrade of bandwidth and network capacity with an advantage of sourceless ONUs compared to the conventional TDM PON.

Keywords

code division multiple access; code division multiplexing; passive optical networks; time division multiplexing; BER performance; OCDMA codes; access network capacity; centralized light source; extended quadratic congruence codes; multiple access interference; multiplexing TDM signal; network scalability; optical CDMA decoders; optical CDMA encoders; sourceless OCDMA-TDM PON; sourceless ONU; upstream OCDMA-TDM passive optical network; Optical fibers; Optical network units; Optical receivers; Optical reflection; Passive optical networks; Time division multiplexing; Access network; optical code-division multiple access (OCDMA); passive optical network (PON); reflective ONUs;

fLanguage

English

Publisher

ieee

Conference_Titel

Networks and Optical Communications (NOC), 2012 17th European Conference on

Conference_Location

Vilanova i la Geltru

Print_ISBN

978-1-4673-0949-3

Electronic_ISBN

978-1-4673-0950-9

Type

conf

DOI

10.1109/NOC.2012.6249912

Filename

6249912