Coherent Radio-Over-Fiber and Millimeter-Wave Radio Seamless Transmission System for Resilient Access Networks

Author

Kanno, A. ; Dat, P.T. ; Kuri, T. ; Hosako, I. ; Kawanishi, T. ; Yoshida, Y. ; Yasumura, Y. ; Kitayama, K.

Author_Institution

Photonic Network Res. Inst., Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan

Volume

4

Issue

6

fYear

2012

Firstpage

2196

Lastpage

2204

Abstract

We propose a millimeter-wave (MMW) coherent radio-over-fiber (RoF) transmission system for application to an access network with a direct broadband last-mile wireless connection to an optical fiber network. The coherent RoF system comprises an optical two-tone RoF signal generator with an advanced modulation format for high-throughput transmission and employs a digital-signal-processing-aided coherent detection technique for MMW radio, which is a technique similar to that of optical digital coherent detection. As proof of concept, a 20-GBd quadrature phase-shift keying RoF transmission over 20 km of optical fiber before a radio transmission over 20 m of air is demonstrated. The results of the radio transmissions using Cassegrain-type antenna pairs with a gain of 50 dBi are consistent with theoretical estimations; this suggests the possibility of developing a midrange transmission system using a high-power MMW amplifier.

Keywords

broadband networks; millimetre wave amplifiers; millimetre wave antennas; optical fibre networks; optical modulation; quadrature phase shift keying; radio access networks; radio-over-fibre; signal detection; signal generators; Cassegrain-type antenna pair; MMW radio; advanced modulation format; coherent radio-over-fiber; digital-signal-processing; direct broadband last-mile wireless connection; high-power MMW amplifier; high-throughput transmission; millimeter-wave radio seamless transmission system; optical digital coherent detection technique; optical fiber network; optical two-tone RoF signal generator; quadrature phase-shift keying RoF transmission; resilient access network; Digital signal processing; High speed optical techniques; Optical devices; Optical fibers; Optical modulation; Optical network units; Optical receivers; Radio-over-fiber (RoF); coherent detection; millimeter-wave (MMW);

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2012.2228182

Filename

6357204