On the Optimality of Single-Carrier Transmission in Large-Scale Antenna Systems
2012 (English)In: IEEE Wireless Communications Letters, ISSN 2162-2337, EISSN 2162-2345, Vol. 1, no 4, 276-279 p.Article in journal (Other academic) Published
A single carrier transmission scheme is presentedfor the frequency selective multi-user (MU) multiple-input singleoutput(MISO) Gaussian Broadcast Channel (GBC) with a basestation (BS) having M antennas and K single antenna users.The proposed transmission scheme has low complexity andfor M ≫ K it is shown to achieve near optimal sum-rateperformance at low transmit power to receiver noise power ratio.Additionally, the proposed transmission scheme results in anequalization-free receiver and does not require any MU resourceallocation and associated control signaling overhead. Also, thesum-rate achieved by the proposed transmission scheme is shownto be independent of the channel power delay profile (PDP). Interms of power efficiency, the proposed transmission scheme alsoexhibits an O(M) array power gain. Simulations are used toconfirm analytical observations.
Place, publisher, year, edition, pages
2012. Vol. 1, no 4, 276-279 p.
IdentifiersURN: urn:nbn:se:liu:diva-80173DOI: 10.1109/WCL.2012.041612.120046OAI: oai:DiVA.org:liu-80173DiVA: diva2:546041
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