A Leakage-Based Precoding Scheme for Downlink Multi-User MIMO Channels
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
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Sadek, M., Tarighat, A., & Sayed, A. H. (2007). A Leakage-Based Precoding Scheme for Downlink Multi-User MIMO Channels. IEEE Transactions on Wireless Communications, 6(5), 1711–1721. https://doi.org/10.1109/TWC.2007.360373
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2007
6
5
1711
1721
REVIEWED
OTHER