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Delay Optimization in Cooperative Relaying with Cyclic Delay Diversity
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (Radio Communication Systems)ORCID iD: 0000-0001-9697-9978
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (Radio Communication Systems)
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS. (Radio Communication Systems)
2008 (English)In: EURASIP Journal on Advances in Signal Processing, ISSN 1687-6172, E-ISSN 1687-6180, 736818- p.Article in journal (Refereed) Published
Abstract [en]

Cooperative relaying has recently been recognized as an alternative to MIMO in a typical multicellularenvironment. Inserting random delays at the nonregenerative fixed relays further improve the system performance.However, random delays result in limited performance gain from multipath diversity. In this paper, two promisingdelay optimization schemes are introduced for a multicellular OFDM system with cooperative relaying withstationary multiple users and fixed relays. Both of the schemes basically aim to take the most advantages ofthe potential frequency selectivity by inserting predetermined delays at the relays, in order to further improve thesystem performance (coverage and throughput). Evaluation results for different multipath fading environments showthat the system performance with delay optimization increases tremendously compared with the case of randomdelay.

Place, publisher, year, edition, pages
2008. 736818- p.
National Category
Computer and Information Science
Research subject
SRA - ICT
Identifiers
URN: urn:nbn:se:kth:diva-31825DOI: 10.1155/2008/736818ISI: 000256729000001Scopus ID: 2-s2.0-43949104416OAI: oai:DiVA.org:kth-31825DiVA: diva2:406522
Note

QC 20111107

Available from: 2011-03-25 Created: 2011-03-25 Last updated: 2017-12-11Bibliographically approved

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