Abstract
Channel inversion is one of the simplest techniques for multiuser downlink systems with single-antenna users. In this paper, we extend the regularized channel inversion technique developed for the single-antenna user case to multiuser multiple-input multiple-output (MIMO) channels with multiple-antenna users. We first employ the multiuser preprocessing to project the multiuser signals near the null space of the unintended users based on the MMSE criterion, and then the single-user preprocessing is applied to the decomposed MIMO interference channels. In order to reduce the complexity, we focus on non-iterative solutions for the multiuser transmit beamforming and use a linear receiver based on an MMSE criterion. Simulation results show that the proposed scheme outperforms existing joint iterative algorithms in most multiuser configurations.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Conference on Communications |
| Pages | 3501-3505 |
| Number of pages | 5 |
| DOIs | |
| Publication status | Published - 2008 Sep 12 |
| Event | IEEE International Conference on Communications, ICC 2008 - Beijing, China Duration: 2008 May 19 → 2008 May 23 |
Other
| Other | IEEE International Conference on Communications, ICC 2008 |
|---|---|
| Country | China |
| City | Beijing |
| Period | 08/5/19 → 08/5/23 |
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ASJC Scopus subject areas
- Media Technology
Cite this
Regularized channel inversion for multiple-antenna users in multiuser MIMO downlink. / Lee, Heunchul; Lee, Kwangwon; Hochwald, Bertrand M.; Lee, Inkyu.
IEEE International Conference on Communications. 2008. p. 3501-3505 4533694.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Regularized channel inversion for multiple-antenna users in multiuser MIMO downlink
AU - Lee, Heunchul
AU - Lee, Kwangwon
AU - Hochwald, Bertrand M.
AU - Lee, Inkyu
PY - 2008/9/12
Y1 - 2008/9/12
N2 - Channel inversion is one of the simplest techniques for multiuser downlink systems with single-antenna users. In this paper, we extend the regularized channel inversion technique developed for the single-antenna user case to multiuser multiple-input multiple-output (MIMO) channels with multiple-antenna users. We first employ the multiuser preprocessing to project the multiuser signals near the null space of the unintended users based on the MMSE criterion, and then the single-user preprocessing is applied to the decomposed MIMO interference channels. In order to reduce the complexity, we focus on non-iterative solutions for the multiuser transmit beamforming and use a linear receiver based on an MMSE criterion. Simulation results show that the proposed scheme outperforms existing joint iterative algorithms in most multiuser configurations.
AB - Channel inversion is one of the simplest techniques for multiuser downlink systems with single-antenna users. In this paper, we extend the regularized channel inversion technique developed for the single-antenna user case to multiuser multiple-input multiple-output (MIMO) channels with multiple-antenna users. We first employ the multiuser preprocessing to project the multiuser signals near the null space of the unintended users based on the MMSE criterion, and then the single-user preprocessing is applied to the decomposed MIMO interference channels. In order to reduce the complexity, we focus on non-iterative solutions for the multiuser transmit beamforming and use a linear receiver based on an MMSE criterion. Simulation results show that the proposed scheme outperforms existing joint iterative algorithms in most multiuser configurations.
UR - http://www.scopus.com/inward/record.url?scp=51249120667&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51249120667&partnerID=8YFLogxK
U2 - 10.1109/ICC.2008.658
DO - 10.1109/ICC.2008.658
M3 - Conference contribution
AN - SCOPUS:51249120667
SN - 9781424420742
SP - 3501
EP - 3505
BT - IEEE International Conference on Communications
ER -