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A Limited Feedback Joint Precoding for Amplify-and-Forward Relaying
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.
School of Information Science and Engineering, Southeast University, Nanjing, China.
KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre. KTH, School of Electrical Engineering (EES), Signal Processing.ORCID iD: 0000-0002-3599-5584
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-2298-6774
2010 (English)In: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 58, no 3, 1347-1357 p.Article in journal (Refereed) Published
Abstract [en]

This paper deals with the practical precoding design for a dual hop downlink with multiple-input multiple-output (MIMO) amplify-and-forward relaying. First, assuming that full channel state information (CSI) of the two hop channels is available, a suboptimal dual hop joint precoding scheme, i.e., precoding at both the base station and relay station, is investigated. Based on its structure, a scheme of limited feedback joint precoding using joint codebooks is then proposed, which uses a distributed codeword selection to concurrently choose two joint precoders such that the feedback delay is considerably decreased. Finally, the joint codebook design for the limited feedback joint precoding system is analyzed, and results reveal 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 of the dual hop joint precoding scheme improves with the size of each of the two codebooks. Simulation results show that the proposed dual hop joint precoding system using distributed codeword selection scheme exhibits a rate or BER performance close to the one using the optimal centralized codeword selection scheme, while having lower computational complexity and shorter feedback delay.

Place, publisher, year, edition, pages
2010. Vol. 58, no 3, 1347-1357 p.
Keyword [en]
Amplify-and-forward relaying, dual hop, Grassmannian codebook, joint precoding, limited feedback, multiple-input multiple-output
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-28809DOI: 10.1109/TSP.2009.2036061ISI: 000274472600033Scopus ID: 2-s2.0-77956759071OAI: oai:DiVA.org:kth-28809DiVA: diva2:392694
Note
QC 20110127Available from: 2011-01-27 Created: 2011-01-21 Last updated: 2017-12-11Bibliographically approved

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Bengtsson, MatsOttersten, Björn

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