Comparison and Cost Analysis of Smart and Opportunistic MIMO OFDM Schemes
2006 (English)In: IST Mobile & Wireless Communications Summit 2006, 2006Conference paper (Refereed)
This paper attempts to compare the system downlinkperformance of a smart antenna scheme for OFDMA thatutilizes channel covariance information with an opportunisticmulti-antenna scheme for OFDMA that uses fast limited feedbackof the instantaneous channel condition. The schemes areevaluated by means of simulations in a low load scenario andalso compared to a simple HSDPA-like scheme. The smartantenna method manages to utilize the multiple antennas betterthan the opportunistic scheme. Furthermore, the performanceof the schemes is inserted into a cost model that assumes thatthe receivers are relays that use short-range technologies tocommunicate with user equipments. Also in terms of cost peruser equipment, the smart antenna scheme proves to be moresuitable for the studied scenario.
Place, publisher, year, edition, pages
IdentifiersURN: urn:nbn:se:kth:diva-46576OAI: oai:DiVA.org:kth-46576DiVA: diva2:453908
IST Mobile & Wireless Communications Summit 2006
QC 201111042011-11-032011-11-032011-11-04Bibliographically approved