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The fixed links frequency assignment problem with equipment selection

Flood, Ian and Allen, Stuart Michael 2013. The fixed links frequency assignment problem with equipment selection. Wireless Personal Communications 71 (1) , pp. 181-194. 10.1007/s11277-012-0810-4

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Abstract

Microwave fixed links play a vital role supporting infrastructure requirements in telecommunications. As the demand for their use increases, particularly in providing backhaul for mobile networks, it is important that the microwave spectrum is exploited efficiently. This paper investigates the use of equipment selection algorithms within the microwave fixed-links frequency assignment problem. Standard data-rates are often supported by two alternative radio system types; one utilising a relatively lower-order modulation scheme and the other using relatively higher-order modulation. The higher-order modulation radios use less bandwidth to achieve the same data rate, but at the expense of higher wanted signal levels and lower interference thresholds. Hence while higher-order modulation is the more spectrally efficient option for an individual link considered in isolation, it may not be the most efficient when the wider network is taken into account. In this paper we provide a new model for the fixed link frequency assignment problem with equipment selection, formulated as an integer program, and investigate the nature of the trade-off between local and global spectral efficiency on a range of representative data.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Computer Science & Informatics
Systems Immunity Research Institute (SIURI)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Uncontrolled Keywords: Equipment selection; Fixed links; Frequency assignment problem; Spectral efficiency
Publisher: Springer
ISSN: 0929-6212
Last Modified: 04 Jun 2017 05:36
URI: http://orca.cf.ac.uk/id/eprint/52391

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