Abstract
We investigate the multiple-input multiple-output broadcast channel with statistical channel state information available at the transmitter. The so-called linear assignment operation is employed, and necessary conditions are derived for the optimal transmit design under general fading conditions. Based on this, we introduce an iterative algorithm to maximize the linear assignment weighted sum-rate by applying a gradient descent method. To reduce complexity, we derive an upper bound of the linear assignment achievable rate of each receiver, from which a simplified closed-form expression for a near-optimal linear assignment matrix is derived. This reveals an interesting construction analogous to that of dirty-paper coding. In light of this, a low-complexity transmission scheme is provided. Numerical examples illustrate the significant performance of the proposed low complexity scheme. © 2014 IEEE.
Recommended Citation
Y. Wu et al., "Transmit Designs for the MIMO Broadcast Channel with Statistical CSI," IEEE Transactions on Signal Processing, vol. 62, no. 17, pp. 4451 - 4466, article no. 6850037, Institute of Electrical and Electronics Engineers, Sep 2014.
The definitive version is available at https://doi.org/10.1109/TSP.2014.2336637
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Broadcast channel; multiple-input multiple-output; statistical CSI
International Standard Serial Number (ISSN)
1053-587X
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Sep 2014
Comments
National Science Foundation, Grant 61222102