On array failure mitigation with respect to probability of failure, using constant excitation coefficients and a genetic algorithm

Mitilineos, SA; Thomopoulos, SCA; Capsalis, CN

dc.contributor.author	Mitilineos, SA	en
dc.contributor.author	Thomopoulos, SCA	en
dc.contributor.author	Capsalis, CN	en
dc.date.accessioned	2014-03-01T01:24:46Z
dc.date.available	2014-03-01T01:24:46Z
dc.date.issued	2006	en
dc.identifier.issn	1536-1225	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17428
dc.subject	Failure mitigation	en
dc.subject	Genetic algorithms (gas)	en
dc.subject	Probability of failure	en
dc.subject	Switched-beam antenna arrays (sbas)	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Communications systems	en
dc.subject.other	Early design stages	en
dc.subject.other	Element failure	en
dc.subject.other	Excitation coefficients	en
dc.subject.other	Failure effects	en
dc.subject.other	Failure mitigation	en
dc.subject.other	Modified genetic algorithms	en
dc.subject.other	Probability of failure	en
dc.subject.other	Radiation patterns	en
dc.subject.other	Spectral efficiencies	en
dc.subject.other	Switched beam antennas	en
dc.subject.other	System Capacity	en
dc.subject.other	Antenna arrays	en
dc.subject.other	Probabilistic logics	en
dc.subject.other	Probability	en
dc.subject.other	Spectrum analyzers	en
dc.subject.other	Genetic algorithms	en
dc.title	On array failure mitigation with respect to probability of failure, using constant excitation coefficients and a genetic algorithm	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/LAWP.2006.874068	en
heal.identifier.secondary	http://dx.doi.org/10.1109/LAWP.2006.874068	en
heal.identifier.secondary	874068	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Switched-beam antenna arrays (SBAs) are widely used in communications systems in order to increase system capacity and spectral efficiency. If an element fails during operation, a significant degradation of the array's performance is observed, even after redistribution of the array's excitation coefficients. Furthermore, redistribution of the excitation coefficients is not always possible. In this letter, a study on the effect of an element failure to an array's radiation patterns, with respect to the probability of failure, is performed. It is shown that mitigation of failure effects is possible if the possibility of failure is taken into account during early design stages. This is accomplished by using a modified genetic algorithm (GA). With the proposed methodology, mitigation is achieved even without the need to redistribute the array's excitation coefficients. © 2006 IEEE.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Antennas and Wireless Propagation Letters	en
dc.identifier.doi	10.1109/LAWP.2006.874068	en
dc.identifier.isi	ISI:000243815900050	en
dc.identifier.volume	5	en
dc.identifier.issue	1	en
dc.identifier.spage	187	en
dc.identifier.epage	190	en