IEICE TRANSACTIONS on Fundamentals
Robust Linear Transmit/Receive Processing for Correlated MIMO Downlink with Imperfect CSI
Summary :
In this paper we investigate designing optimal linear transmit/receive processing filters for multiuser MIMO downlinks with imperfect channel state information (CSI) and spatial fading correlation between antenna array at BS. A robust scheme is proposed to obtain the optimal linear transmit/receive filters in the sense of minimizing the average sum mean square error (SMSE) conditional on noisy channel estimates under a per-user transmit power constraint. Using an iterative procedure, the proposed scheme extends the existing optimization algorithm for uncorrelated single-user MIMO systems with perfect CSI to solve the problem of minimizing SMSE in spatially correlated MIMO downlinks with imperfect CSI. Comparing with non-robust scheme, we show that robust scheme efficiently mitigates the BER loss induced by imperfect CSI. In addition, the impact of fading correlation at BS on the performance of the proposed robust scheme is analyzed.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.9 pp.2626-2636
- Publication Date
- 2008/09/01
- Publicized
- Online ISSN
- 1745-1337
- DOI
- 10.1093/ietfec/e91-a.9.2626
- Type of Manuscript
- PAPER
- Category
- Communication Theory and Signals
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Keyword
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Hao LI, Changqing XU, Pingzhi FAN, "Robust Linear Transmit/Receive Processing for Correlated MIMO Downlink with Imperfect CSI" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 9, pp. 2626-2636, September 2008, doi: 10.1093/ietfec/e91-a.9.2626.
Abstract: In this paper we investigate designing optimal linear transmit/receive processing filters for multiuser MIMO downlinks with imperfect channel state information (CSI) and spatial fading correlation between antenna array at BS. A robust scheme is proposed to obtain the optimal linear transmit/receive filters in the sense of minimizing the average sum mean square error (SMSE) conditional on noisy channel estimates under a per-user transmit power constraint. Using an iterative procedure, the proposed scheme extends the existing optimization algorithm for uncorrelated single-user MIMO systems with perfect CSI to solve the problem of minimizing SMSE in spatially correlated MIMO downlinks with imperfect CSI. Comparing with non-robust scheme, we show that robust scheme efficiently mitigates the BER loss induced by imperfect CSI. In addition, the impact of fading correlation at BS on the performance of the proposed robust scheme is analyzed.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.9.2626/_p
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@ARTICLE{e91-a_9_2626,
author={Hao LI, Changqing XU, Pingzhi FAN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Robust Linear Transmit/Receive Processing for Correlated MIMO Downlink with Imperfect CSI},
year={2008},
volume={E91-A},
number={9},
pages={2626-2636},
abstract={In this paper we investigate designing optimal linear transmit/receive processing filters for multiuser MIMO downlinks with imperfect channel state information (CSI) and spatial fading correlation between antenna array at BS. A robust scheme is proposed to obtain the optimal linear transmit/receive filters in the sense of minimizing the average sum mean square error (SMSE) conditional on noisy channel estimates under a per-user transmit power constraint. Using an iterative procedure, the proposed scheme extends the existing optimization algorithm for uncorrelated single-user MIMO systems with perfect CSI to solve the problem of minimizing SMSE in spatially correlated MIMO downlinks with imperfect CSI. Comparing with non-robust scheme, we show that robust scheme efficiently mitigates the BER loss induced by imperfect CSI. In addition, the impact of fading correlation at BS on the performance of the proposed robust scheme is analyzed.},
keywords={},
doi={10.1093/ietfec/e91-a.9.2626},
ISSN={1745-1337},
month={September},}
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TY - JOUR
TI - Robust Linear Transmit/Receive Processing for Correlated MIMO Downlink with Imperfect CSI
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2626
EP - 2636
AU - Hao LI
AU - Changqing XU
AU - Pingzhi FAN
PY - 2008
DO - 10.1093/ietfec/e91-a.9.2626
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E91-A
IS - 9
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - September 2008
AB - In this paper we investigate designing optimal linear transmit/receive processing filters for multiuser MIMO downlinks with imperfect channel state information (CSI) and spatial fading correlation between antenna array at BS. A robust scheme is proposed to obtain the optimal linear transmit/receive filters in the sense of minimizing the average sum mean square error (SMSE) conditional on noisy channel estimates under a per-user transmit power constraint. Using an iterative procedure, the proposed scheme extends the existing optimization algorithm for uncorrelated single-user MIMO systems with perfect CSI to solve the problem of minimizing SMSE in spatially correlated MIMO downlinks with imperfect CSI. Comparing with non-robust scheme, we show that robust scheme efficiently mitigates the BER loss induced by imperfect CSI. In addition, the impact of fading correlation at BS on the performance of the proposed robust scheme is analyzed.
ER -
English
