Green, elastic coherent IFDMA-PON for next-generation access network

Author

Kitayama, Ken-ichi ; Yoshida, Yuki ; Maruta, Akihiro

Author_Institution

Dept. of Electr., Electron. & Inf. Eng., Osaka Univ., Suita, Japan

fYear

2012

fDate

2-5 July 2012

Firstpage

1

Lastpage

4

Abstract

In this talk, our recent R&D activities a green, elastic next-generation (NG) access network based upon coherent interleaved-frequency division multiple access (IFDMA), a special class of OFDMA will be presented. Conventional OFDMA systems require power-consuming IFFT in the transmitter. It will be shown that “Green” can be realized in the generation of IFDMA signals by replacing the IFFT circuit with a simplified subcarrier mapping circuit. “Elastic” bandwidth provisioning will be demonstrated by the uplink experiment of dynamic allocation on-demand of 20 Gbps-QPSK and 30 Gbps-8 PSK signals to two ONUs. In addition, the carrier synchronization technique of the uplink between multiple ONUs by using DSP-based low-complexity carrier frequency offset (CFO) pre-compensation will be discussed.

Keywords

OFDM modulation; fast Fourier transforms; frequency division multiple access; next generation networks; passive optical networks; quadrature phase shift keying; radio transmitters; subscriber loops; synchronisation; DSP-based low-complexity carrier frequency offset; OFDMA systems; QPSK signals; bit rate 20 Gbit/s; bit rate 30 Gbit/s; carrier synchronization; dynamic allocation; elastic bandwidth provisioning; elastic coherent IFDMA-PON; elastic next-generation access network; green access network; interleaved-frequency division multiple access; power-consuming IFFT; pre-compensation; subcarrier mapping circuit; transmitter; two ONU; Bandwidth; Next generation networking; OFDM; Optical network units; Optical transmitters; Passive optical networks; communications; digital coherent communications; elastic bandwidth provisioning; fiber optics; interleaved-frequency division multiple access (IFDMA); next-generation passive optical network (PON);

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks (ICTON), 2012 14th International Conference on

Conference_Location

Coventry

ISSN

2161-2056

Print_ISBN

978-1-4673-2228-7

Electronic_ISBN

2161-2056

Type

conf

DOI

10.1109/ICTON.2012.6253711

Filename

6253711