A codebook-based precoding for dual-hop downlink with MIMO amplify-and-forward relaying

Huang, Yongming; Yang, Luxi; Bengtsson, Mats; Ottersten, Björn

doi:10.1109/SPAWC.2009.5161784

Reference : A codebook-based precoding for dual-hop downlink with MIMO amplify-and-forward relaying


	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Computer science Engineering, computing & technology : Computer science
	To cite this reference:	http://hdl.handle.net/10993/7573

Title :	A codebook-based precoding for dual-hop downlink with MIMO amplify-and-forward relaying
Language :	English
Author, co-author :	Huang, Yongming [> >]
	Yang, Luxi [> >]
	Bengtsson, Mats [> >]
	Ottersten, Björn [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Publication date :	2009
Main document title :	Signal Processing Advances in Wireless Communications, 2009. SPAWC '09. IEEE 10th Workshop on
Publisher :	IEEE
Peer reviewed :	Yes
Audience :	International
ISBN :	978-1-4244-3695-8
Event name :	IEEE International Workshop on Signal Processing Advances in Wireless Communications
Event date :	June 21-24, 2009
Event place (city) :	Perugia
Event country :	Italy
Abstract :	[en] 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.
Target :	Others
Permalink :	http://hdl.handle.net/10993/7573
DOI :	10.1109/SPAWC.2009.5161784

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