[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.
Disciplines :
Computer science Computer science
Identifiers :
UNILU:UL-CONFERENCE-2009-683
Author, co-author :
Huang, Yongming
Yang, Luxi
Bengtsson, Mats
Ottersten, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Language :
English
Title :
A codebook-based precoding for dual-hop downlink with MIMO amplify-and-forward relaying
Publication date :
2009
Event name :
IEEE International Workshop on Signal Processing Advances in Wireless Communications
Event place :
Perugia, Italy
Event date :
June 21-24, 2009
Audience :
International
Main work title :
Signal Processing Advances in Wireless Communications, 2009. SPAWC '09. IEEE 10th Workshop on
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