Delay Optimization in Cooperative Relaying with Cyclic Delay Diversity
2008 (English)In: 2008 IEEE International Conference On Communications, Proceedings: Vols 1-13, 2008, 3553-3557 p.Conference paper (Refereed)
Cooperative relaying has recently been recognized as an alternative to MIMO in a typical multi cellular environment Inserting random delays at the non-regenerative fixed relays, further improve the system performance. However, random delay results in limited performance gain from multipath diversity. In this paper, two promising delay optimization schemes are introduced for a multi cellular OFDM system with cooperative relaying with stationary multiple users and fixed relays. Both of the schemes basically aim to take the most advantages of the potential frequency selectivity by inserting pre-determined delays at the relays, in order to further improve the system performance (coverage and throughput). Evaluation results for different multipath fading environments show that the system performance with delay optimization increases tremendously compared with the case of random delay.
Place, publisher, year, edition, pages
2008. 3553-3557 p.
, IEEE International Conference on Communications, ISSN 1550-3607
Delay optimization, Frequency selectivity, OFDM, Relaying cooperation, Scheduling
Computer and Information Science
Research subject SRA - ICT
IdentifiersURN: urn:nbn:se:kth:diva-31053DOI: 10.1109/ICC.2008.668ISI: 000259505002158ScopusID: 2-s2.0-51249089414ISBN: 978-1-4244-2074-2OAI: oai:DiVA.org:kth-31053DiVA: diva2:402313
IEEE International Conference on Communications, ICC 2008; Beijing; 19 May 2008 through 23 May 2008