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A Generalized Zero-Forcing Precoder for Multiple Antenna Gaussian Broadcast Channels

Hu, Sha LU and Rusek, Fredrik LU (2017) IEEE International Symposium on Information Theory (ISIT), 2017 p.556-560
Abstract
In this paper, we consider precoder design for multiuser multiple-input-multiple-output (MIMO) Gaussian broadcast (BC) channels and propose a generalized zero-forcing (GZF) precoder based on successive dirty-paper coding (DPC), i.e., the GZF-DP precoder. The GZF-DP precoder is an extension of the GZF-DP precoder designed earlier for multi-input-single-output broadcast (MISO-BC) channels, and also a generalization of both the linear block-diagonalization ZF (BD-ZF) and the successive ZF with DPC (SZF-DPC) precoders. With the GZF-DP precoder, the depth of the inter-user interference after precoding (and before the DPC) can be specified at will by a parameter $\nu$, which provides a trade-off between the optimal rates and the DPC... (More)
In this paper, we consider precoder design for multiuser multiple-input-multiple-output (MIMO) Gaussian broadcast (BC) channels and propose a generalized zero-forcing (GZF) precoder based on successive dirty-paper coding (DPC), i.e., the GZF-DP precoder. The GZF-DP precoder is an extension of the GZF-DP precoder designed earlier for multi-input-single-output broadcast (MISO-BC) channels, and also a generalization of both the linear block-diagonalization ZF (BD-ZF) and the successive ZF with DPC (SZF-DPC) precoders. With the GZF-DP precoder, the depth of the inter-user interference after precoding (and before the DPC) can be specified at will by a parameter $\nu$, which provides a trade-off between the optimal rates and the DPC implementation-complexity. Utilizing DPC, the known non-causal inter-user interferences from the other (up to) $\nu$ users are canceled through successive encoding. Within the class of GZF-DP, we analyze the optimal precoder designs both for sum-rate and minimum user-rate maximizations, which are solved in closed-forms in conjunction with water-filling algorithms depending on $\nu$. We show through numerical results that, the proposed GZF-DP precoder with a small $\nu$ renders significant rate increments compared to the linear BD-ZF precoder, and is close to the SZF-DP preocder with a much less DPC complexity. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
IEEE International Symposium on Information Theory (ISIT), 2017
pages
556 - 560
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE International Symposium on Information Theory (ISIT), 2017
conference location
Aachen, Germany
conference dates
2017-06-25 - 2017-06-30
external identifiers
  • scopus:85034063722
ISBN
978-1-5090-4096-4
DOI
10.1109/ISIT.2017.8006589
language
English
LU publication?
yes
id
49beb76d-dbe1-452d-a214-875befeae205
date added to LUP
2017-04-04 09:29:41
date last changed
2019-04-30 16:53:09
@inproceedings{49beb76d-dbe1-452d-a214-875befeae205,
  abstract     = {In this paper, we consider precoder design for multiuser multiple-input-multiple-output (MIMO) Gaussian broadcast (BC) channels and propose a generalized zero-forcing (GZF) precoder based on successive dirty-paper coding (DPC), i.e., the GZF-DP precoder. The GZF-DP precoder is an extension of the GZF-DP precoder designed earlier for multi-input-single-output broadcast (MISO-BC) channels, and also a generalization of both the linear block-diagonalization ZF (BD-ZF) and the successive ZF with DPC (SZF-DPC) precoders. With the GZF-DP precoder, the depth of the inter-user interference after precoding (and before the DPC) can be specified at will by a parameter $\nu$, which provides a trade-off between the optimal rates and the DPC implementation-complexity. Utilizing DPC, the known non-causal inter-user interferences from the other (up to) $\nu$ users are canceled through successive encoding. Within the class of GZF-DP, we analyze the optimal precoder designs both for sum-rate and minimum user-rate maximizations, which are solved in closed-forms in conjunction with water-filling algorithms depending on $\nu$. We show through numerical results that, the proposed GZF-DP precoder with a small $\nu$ renders significant rate increments compared to the linear BD-ZF precoder, and is close to the SZF-DP preocder with a much less DPC complexity.},
  author       = {Hu, Sha and Rusek, Fredrik},
  isbn         = {978-1-5090-4096-4 },
  language     = {eng},
  location     = {Aachen, Germany},
  pages        = {556--560},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {A Generalized Zero-Forcing Precoder for Multiple Antenna Gaussian Broadcast Channels},
  url          = {http://dx.doi.org/10.1109/ISIT.2017.8006589},
  year         = {2017},
}