Title :
OCDMA-based 60-GHz radio-over-fiber system for next generation wireless access networks
Author :
Chen, Chen ; Zhang, Chongfu ; Qiu, Kun
Author_Institution :
Key Lab. of Opt. Fiber Sensing & Commun. Networks, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A high secure bidirectional 60-GHz radio-over-fiber (RoF) system is proposed and successfully demonstrated, based on optical code-division multiple access (OCDMA) encoding and decoding techniques. The optical carriers for both downlink and uplink transmissions are simultaneously generated in a lightwave centralized central station (CS), using the optical double sideband (ODSB) modulation of a dual-arm Mach-Zehnder modulator (MZM), so it can make remote base stations (BS) sourceless and colorless. Two-fiber topology is adopted in the scheme and therefore the effect of Rayleigh backscattering (RB) is neglected. We employ super-structured fiber Bragg gratings (SSFBG) as the OCDMA encoders and decoders, in order to obtain a preferable performance of our proposed OCDMA-RoF system.
Keywords :
Bragg gratings; Rayleigh scattering; backscatter; code division multiple access; decoding; network coding; next generation networks; optical fibre subscriber loops; optical modulation; radio access networks; radio-over-fibre; telecommunication network topology; BS sourceless; MZM; OCDMA-RoF system; ODSB modulation; Rayleigh backscattering; SSFBG; decoding techniques; downlink transmissions; dual-arm Mach-Zehnder modulator; frequency 60 GHz; high secure bidirectional radio-over-fiber system; lightwave centralized central station; next generation wireless access networks; optical carriers; optical code-division multiple access encoding techniques; optical double sideband modulation; remote base stations; superstructured fiber Bragg gratings; two-fiber topology; uplink transmissions; Bit error rate; Optical fibers; Optical filters; Optical modulation; Optical pulses; Optical reflection;
Conference_Titel :
Microwave and Millimeter Wave Technology (ICMMT), 2012 International Conference on
Conference_Location :
Shenzhen
Print_ISBN :
978-1-4673-2184-6
DOI :
10.1109/ICMMT.2012.6230350
