Dudley, SEM and Quinlan, TJ and Walker, SD (2008) 'Ultrabroadband wireless-optical transmission links using axial slot leaky feeders and optical fiber for underground transport topologies.' IEEE Transactions on Vehicular Technology, 57 (6). 3471 - 3476. ISSN 0018-9545

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Abstract

This paper describes a hybrid leaky feeder/fiber-optic transmission system for use in underground transportation networks. The system has a 1.6-Gb/s throughput and features an ultrawideband axial slot leaky feeder, which is based on a standard semirigid coaxial cable as a fixed antenna. Patch antennas with a 4-GHz center frequency and a 1-GHz, 10-dB bandwidth are proposed for the rolling stock. This highest reported data rate was achieved by combining two 800-Mb/s in-phase and quadrature (I and Q) phase-shift keying (PSK) modulated data streams. A specially designed carrier and data synchronization system provided a convenient interface to a 1.3/1.5-μm diplex single-mode fiber-remoting network. The measured 2.4- to 6-GHz leaky feeder bandwidth allows multiradio multiband wireless mesh networking and, therefore, low-contention gigabit rolling stock data communications. © 2008 IEEE.

Item Type:	Article
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:	Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User:	Jim Jamieson
Date Deposited:	25 Feb 2013 15:55
Last Modified:	17 Aug 2017 18:02
URI:	http://repository.essex.ac.uk/id/eprint/5577

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