Optimal policies for handoff and channel assignment in networks of LEO satellites using CDMA

Chang, Y-W; Geraniotis, E

dc.contributor.author	Chang, Y-W	en
dc.contributor.author	Geraniotis, E	en
dc.date.accessioned	2014-03-01T01:47:25Z
dc.date.available	2014-03-01T01:47:25Z
dc.date.issued	1998	en
dc.identifier.issn	10220038	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25208
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031997642&partnerID=40&md5=110b392abb305a5c780ae17fa3efc211	en
dc.subject.other	Algorithms	en
dc.subject.other	Bit error rate	en
dc.subject.other	Cellular radio systems	en
dc.subject.other	Communication channels (information theory)	en
dc.subject.other	Digital communication systems	en
dc.subject.other	Markov processes	en
dc.subject.other	Network protocols	en
dc.subject.other	Optimization	en
dc.subject.other	Public policy	en
dc.subject.other	Spread spectrum communication	en
dc.subject.other	Telecommunication traffic	en
dc.subject.other	Code division multiple access (CDMA) systems	en
dc.subject.other	Low Earth orbit (LEO) satellite systems	en
dc.subject.other	Satellite communication systems	en
dc.title	Optimal policies for handoff and channel assignment in networks of LEO satellites using CDMA	en
heal.type	journalArticle	en
heal.publicationDate	1998	en
heal.abstract	In this paper, we formulate the combined handoff and channel assignment problems in a CDMA LEO satellite network as a reward/cost optimization problem. The probabilistic properties of signals (channel fading as function of satellite elevation angle) and of the traffic in the footprints are used to formulate a finite-horizon Markov decision process. The optimal policy is obtained by minimizing a cost function consisting of the weighted sum of the switching costs and blocking costs of traffics subject to a bit-error-rate or outage probability constraint. A backward induction algorithm is applied to derive the optimal policy. Performance of the optimal policy and the direct threshold policy are compared.	en
heal.journalName	Wireless Networks	en
dc.identifier.volume	4	en
dc.identifier.issue	2	en
dc.identifier.spage	181	en
dc.identifier.epage	187	en