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In multiuser MIMO downlink communications, it is necessary to design precoding schemes that are able to suppress co-channel interference. This paper proposes designing precoders by maximizing the so-called signal-to-leakage-and-noise ratio (SLNR) for all users simultaneously. The presentation considers communications with both single- and multi-stream cases, as well as MIMO systems that employ Alamouti coding. The effect of channel estimation errors on system performance is also studied. Compared with zero-forcing solutions, the proposed method does not impose a condition on the relation between the number of transmit and receive antennas, and it also avoids noise enhancement. Simulations illustrate the performance of the scheme
Published in:
Wireless Communications, IEEE Transactions on
(Volume:6
,
Issue:
5
)
Date of Publication: May 2007
- Page(s):
- 1711 - 1721
- ISSN :
- 1536-1276
- INSPEC Accession Number:
- 9458063
- Digital Object Identifier :
- 10.1109/TWC.2007.360373
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 21 May 2007
- Issue Date :
- May 2007
- Sponsored by :
- IEEE Communications Society
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