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Cell Range Extension Techniques for Wide-Area Ubiquitous Network

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5 Author(s)
Yosuke Fujino ; NTT Network Innovation Labs., NTT Corp., Yokosuka, Japan ; Shigeru Kuwano ; Seiji Ohmori ; Takafumi Fujita
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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:

2011 Tenth International Symposium on Autonomous Decentralized Systems

Date of Conference:

23-27 March 2011