Abstract
Limited feedback precoding significantly improves multiple-input multiple-output (MIMO) link reliability with a small amount of feedback from the receiver back to the transmitter. One of the key problems linked to LFP is about the selection criteria of the optimal precoder index (PMI) from a codebook. In this paper, we find that the conventional PMI selection criteria under the stream maximization transmission (SMT) will be ineffective when the linear equalizers are employed at the receiver. Inspired by this discovery, a new singular value decomposition (SVD) based criterion activating the PMI selection for the SMT is proposed, which is accessible to both zero-foring (ZF) and minimum mean square error (MMSE) equalizer. Extensive numerical results are provided to substantiate the effectiveness of the proposed criterion.
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Chen, Q., Peng, C., Lin, G. (2012). Stream Maximization Transmission for MIMO System with Limited Feedback Unitary Precoding. In: Zhang, W., Yang, X., Xu, Z., An, P., Liu, Q., Lu, Y. (eds) Advances on Digital Television and Wireless Multimedia Communications. Communications in Computer and Information Science, vol 331. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-34595-1_44
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DOI: https://doi.org/10.1007/978-3-642-34595-1_44
Publisher Name: Springer, Berlin, Heidelberg
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