A Codebook-Based Precoding For Dual-Hop Downlink With Mimo Amplify-And-Forward Relaying
2009 (English)In: SPAWC: 2009 IEEE 10TH WORKSHOP ON SIGNAL PROCESSING ADVANCES IN WIRELESS COMMUNICATIONS, NEW YORK: IEEE , 2009, 245-249 p.Conference paper (Refereed)
This paper deals with the practical precoding design for a two-hop downlink with MIMO amplify-and-forward relaying. A novel scheme of codebook-based joint precoding at both the base station and the relay station is first presented, in which a distributed codeword selection is proposed to concurrently choose two joint precoders such that the feedback delay is considerably reduced. Then, the joint codebook design in such a joint precoding system is analyzed, revealing that independent codebook designs at the base station and relay station using the conventional Grassmannian subspace packing method is able to guarantee that the overall performance improves with either size of two codebooks. The excellent performances of the proposed scheme, in terms of both the sum rate and the BER, are finally confirmed with computational simulations.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2009. 245-249 p.
Grassmannian subspace packing method, MIMO amplify-and-forward relaying, base station, codebook-based precoding, distributed codeword selection, dual-hop downlink
IdentifiersURN: urn:nbn:se:kth:diva-30178DOI: 10.1109/SPAWC.2009.5161784ISI: 000274650700050ScopusID: 2-s2.0-70449595723ISBN: 978-1-4244-3695-8OAI: oai:DiVA.org:kth-30178DiVA: diva2:400991
10th IEEE Workshop on Signal Processing Advances in Wireless Communications Perugia, ITALY, JUN 21-24, 2009
QC 201103012011-03-012011-02-212012-01-23Bibliographically approved