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Cell Range Extension Techniques for Wide-Area Ubiquitous Network

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5 Author(s)
Fujino, Y. ; NTT Network Innovation Labs., NTT Corp., Yokosuka, Japan ; Kuwano, S. ; Ohmori, S. ; Fujita, T.
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This paper describes a newly developed wireless access system for the wide area ubiquitous network (WAUN), a large cell-based public sensor network. It introduces two key technologies to achieve WAUN with wide area coverage. The first is a digitalized radio over optical fiber (DROF) subsystem that allows cost-effective commercial packet based networks to transfer wireless RF signals among distributed access points. The second is a frequency offset transmitter diversity scheme that achieves sub optimal diversity gain without rate loss, regardless of the number of antennas, by using intentional and orderly frequency offset.

Published in:

Autonomous Decentralized Systems (ISADS), 2011 10th International Symposium on

Date of Conference:

23-27 March 2011