Joint Optimization of Power Allocation and Detection Ordering for Closed-Loop OSIC System
Summary :
In this paper, we investigate a detection ordering scheme of OSIC (Ordered Successive Interference Cancellation) systems suitable for power controlled MIMO transmission. Most studies about power controlled systems have mainly focused on strategies for transmitter, while the ordering scheme optimized at open-loop system has not been modified. In a conventional ordering scheme, the ordering process is done according to the largeness and smallness relation of each sub-stream's SNR. Unlike the conventional scheme, we derive an optimized detection ordering scheme that uses proximity to the optimal SNR. Because of error propagation, our proximity based algorithm is not valid for open-loop MIMO system in many cases. An optimization problem analysis and simulation results show that the system using the proposed ordering scheme outperforms the system using the conventional ordering scheme. Furthermore, due to the nature of QR decomposition, the proposed scheme shows not only lower implementation complexity but also better BER performance compared with the conventional scheme based on pseudo-inverse.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E90-B No.12 pp.3606-3611
- Publication Date
- 2007/12/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1093/ietcom/e90-b.12.3606
- Type of Manuscript
- PAPER
- Category
- Wireless Communication Technologies
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Keyword
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Deok-Kyu HWANG, Seung-Hoon HWANG, Keum-Chan WHANG, "Joint Optimization of Power Allocation and Detection Ordering for Closed-Loop OSIC System" in IEICE TRANSACTIONS on Communications,
vol. E90-B, no. 12, pp. 3606-3611, December 2007, doi: 10.1093/ietcom/e90-b.12.3606.
Abstract: In this paper, we investigate a detection ordering scheme of OSIC (Ordered Successive Interference Cancellation) systems suitable for power controlled MIMO transmission. Most studies about power controlled systems have mainly focused on strategies for transmitter, while the ordering scheme optimized at open-loop system has not been modified. In a conventional ordering scheme, the ordering process is done according to the largeness and smallness relation of each sub-stream's SNR. Unlike the conventional scheme, we derive an optimized detection ordering scheme that uses proximity to the optimal SNR. Because of error propagation, our proximity based algorithm is not valid for open-loop MIMO system in many cases. An optimization problem analysis and simulation results show that the system using the proposed ordering scheme outperforms the system using the conventional ordering scheme. Furthermore, due to the nature of QR decomposition, the proposed scheme shows not only lower implementation complexity but also better BER performance compared with the conventional scheme based on pseudo-inverse.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e90-b.12.3606/_p
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@ARTICLE{e90-b_12_3606,
author={Deok-Kyu HWANG, Seung-Hoon HWANG, Keum-Chan WHANG, },
journal={IEICE TRANSACTIONS on Communications},
title={Joint Optimization of Power Allocation and Detection Ordering for Closed-Loop OSIC System},
year={2007},
volume={E90-B},
number={12},
pages={3606-3611},
abstract={In this paper, we investigate a detection ordering scheme of OSIC (Ordered Successive Interference Cancellation) systems suitable for power controlled MIMO transmission. Most studies about power controlled systems have mainly focused on strategies for transmitter, while the ordering scheme optimized at open-loop system has not been modified. In a conventional ordering scheme, the ordering process is done according to the largeness and smallness relation of each sub-stream's SNR. Unlike the conventional scheme, we derive an optimized detection ordering scheme that uses proximity to the optimal SNR. Because of error propagation, our proximity based algorithm is not valid for open-loop MIMO system in many cases. An optimization problem analysis and simulation results show that the system using the proposed ordering scheme outperforms the system using the conventional ordering scheme. Furthermore, due to the nature of QR decomposition, the proposed scheme shows not only lower implementation complexity but also better BER performance compared with the conventional scheme based on pseudo-inverse.},
keywords={},
doi={10.1093/ietcom/e90-b.12.3606},
ISSN={1745-1345},
month={December},}
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TY - JOUR
TI - Joint Optimization of Power Allocation and Detection Ordering for Closed-Loop OSIC System
T2 - IEICE TRANSACTIONS on Communications
SP - 3606
EP - 3611
AU - Deok-Kyu HWANG
AU - Seung-Hoon HWANG
AU - Keum-Chan WHANG
PY - 2007
DO - 10.1093/ietcom/e90-b.12.3606
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E90-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2007
AB - In this paper, we investigate a detection ordering scheme of OSIC (Ordered Successive Interference Cancellation) systems suitable for power controlled MIMO transmission. Most studies about power controlled systems have mainly focused on strategies for transmitter, while the ordering scheme optimized at open-loop system has not been modified. In a conventional ordering scheme, the ordering process is done according to the largeness and smallness relation of each sub-stream's SNR. Unlike the conventional scheme, we derive an optimized detection ordering scheme that uses proximity to the optimal SNR. Because of error propagation, our proximity based algorithm is not valid for open-loop MIMO system in many cases. An optimization problem analysis and simulation results show that the system using the proposed ordering scheme outperforms the system using the conventional ordering scheme. Furthermore, due to the nature of QR decomposition, the proposed scheme shows not only lower implementation complexity but also better BER performance compared with the conventional scheme based on pseudo-inverse.
ER -
English
