Title :
1.6Gb/s Data Throughput Optically-Remoted Leaky Feeders for Underground Transport Environments
Author :
Dudley, Sandra E M ; Quinlan, Terence J. ; Walker, Stuart D.
Author_Institution :
Dept. of Electr., Comput. & Commun. Eng., London South Bank Univ.
Abstract :
In this paper the authors describe a hybrid leaky feeder, fiber-optic transmission system for use in underground transportation networks. The system described has a transmission rate of 1.6 Gb/s and features an ultra wideband, axial-slot leaky feeder, based on standard semi-rigid coaxial cable as a fixed antenna. Patch antennas with a 4 GHz center frequency and 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) PSK modulated data streams. A specially designed carrier and data synchronization system provided a convenient interface to a 1.3/1.5 mum diplex single mode fiber-remoting network. The measured 2.4 - 6 GHz leaky feeder bandwidth allows multi-radio, multi-band wireless mesh networking and therefore low-contention gigabit rolling stock data communications.
Keywords :
coaxial cables; microstrip antennas; phase shift keying; radio-over-fibre; transportation; underground communication; 1.6 Gbit/s; 2.4 to 6 GHz; 4 GHz; PSK modulated data streams; fiber-optic transmission system; multi-band wireless mesh networking; optically-remote leaky feeders; patch antennas; rolling stock data communications; semi-rigid coaxial cable; ultra wideband axial-slot leaky feeder; underground transport; Antenna feeds; Bandwidth; Coaxial cables; Optical fiber cables; Patch antennas; Throughput; Transmitting antennas; Transportation; Ultra wideband antennas; Ultra wideband technology;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC2007-Spring. IEEE 65th
Conference_Location :
Dublin
Print_ISBN :
1-4244-0266-2
DOI :
10.1109/VETECS.2007.118
