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A Linear Processing Scheme in Multiuser Downlink MIMO Broadcasting Channel with Fixed Relays

Jie XU, Ling QIU

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Summary :

In this letter, we propose a novel singular value decomposition zero-forcing beamforming (SVD-ZFBF) relaying scheme in the multiuser downlink MIMO broadcasting channel with fixed relays. Based on the processing scheme, we apply SUS [5] to select users at the relay station (RS) and develop a joint power allocation strategy at the base station (BS) and RS. By increasing the power at RS or selecting active users to obtain more multiuser diversity, SVD-ZFBF can approach an upper bound and outperform SVD-ZFDPC [1] with much lower complexity. Moreover, we show that the noise power ratio of RS to users significantly impacts the performance.

Publication
IEICE TRANSACTIONS on Communications Vol.E92-B No.2 pp.679-682
Publication Date
2009/02/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E92.B.679
Type of Manuscript
LETTER
Category
Wireless Communication Technologies

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