Layer Error Characteristics of Lattice-Reduction Aided V-BLAST Detectors

Tien Duc NGUYEN; Xuan Nam TRAN; Tadashi FUJINO

doi:10.1093/ietfec/e89-a.10.2535

Layer Error Characteristics of Lattice-Reduction Aided V-BLAST Detectors

Tien Duc NGUYEN, Xuan Nam TRAN, Tadashi FUJINO

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Recently, lattice reduction aided (LRA) detectors have been introduced into Vertical Bell-Labs Layered Space-Time (V-BLAST) systems to obtain nearly optimal bit error rate (BER) performance for only small additional complexity. In this paper, the layer error characteristics of LRA-V-BLAST detectors are investigated and compared with those of conventional V-BLAST ones. Two important conclusions are drawn for the LRA-V-BLAST detectors. First, the variation of their mean square error (MSE) within each detection iteration is not as large as in conventional V-BLAST detectors. Second, thanks to lattice reduction there exists an inherent sub-optimal detection order from the last to the first layer. These conclusions allow LRA-V-BLAST detectors to avoid optimal ordering to further reduce the complexity. LRA-V-BLAST detectors without optimal ordering are shown to obtain almost the same BER performance of LRA-V-BLAST detector with optimal ordering.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.10 pp.2535-2542

Publication Date: 2006/10/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e89-a.10.2535

Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications)

Category: Coding Theory

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Tien Duc NGUYEN, Xuan Nam TRAN, Tadashi FUJINO, "Layer Error Characteristics of Lattice-Reduction Aided V-BLAST Detectors" in IEICE TRANSACTIONS on Fundamentals, vol. E89-A, no. 10, pp. 2535-2542, October 2006, doi: 10.1093/ietfec/e89-a.10.2535.
Abstract: Recently, lattice reduction aided (LRA) detectors have been introduced into Vertical Bell-Labs Layered Space-Time (V-BLAST) systems to obtain nearly optimal bit error rate (BER) performance for only small additional complexity. In this paper, the layer error characteristics of LRA-V-BLAST detectors are investigated and compared with those of conventional V-BLAST ones. Two important conclusions are drawn for the LRA-V-BLAST detectors. First, the variation of their mean square error (MSE) within each detection iteration is not as large as in conventional V-BLAST detectors. Second, thanks to lattice reduction there exists an inherent sub-optimal detection order from the last to the first layer. These conclusions allow LRA-V-BLAST detectors to avoid optimal ordering to further reduce the complexity. LRA-V-BLAST detectors without optimal ordering are shown to obtain almost the same BER performance of LRA-V-BLAST detector with optimal ordering.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e89-a.10.2535/_p

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@ARTICLE{e89-a_10_2535,
author={Tien Duc NGUYEN, Xuan Nam TRAN, Tadashi FUJINO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Layer Error Characteristics of Lattice-Reduction Aided V-BLAST Detectors},
year={2006},
volume={E89-A},
number={10},
pages={2535-2542},
abstract={Recently, lattice reduction aided (LRA) detectors have been introduced into Vertical Bell-Labs Layered Space-Time (V-BLAST) systems to obtain nearly optimal bit error rate (BER) performance for only small additional complexity. In this paper, the layer error characteristics of LRA-V-BLAST detectors are investigated and compared with those of conventional V-BLAST ones. Two important conclusions are drawn for the LRA-V-BLAST detectors. First, the variation of their mean square error (MSE) within each detection iteration is not as large as in conventional V-BLAST detectors. Second, thanks to lattice reduction there exists an inherent sub-optimal detection order from the last to the first layer. These conclusions allow LRA-V-BLAST detectors to avoid optimal ordering to further reduce the complexity. LRA-V-BLAST detectors without optimal ordering are shown to obtain almost the same BER performance of LRA-V-BLAST detector with optimal ordering.},
keywords={},
doi={10.1093/ietfec/e89-a.10.2535},
ISSN={1745-1337},
month={October},}

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TY - JOUR
TI - Layer Error Characteristics of Lattice-Reduction Aided V-BLAST Detectors
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2535
EP - 2542
AU - Tien Duc NGUYEN
AU - Xuan Nam TRAN
AU - Tadashi FUJINO
PY - 2006
DO - 10.1093/ietfec/e89-a.10.2535
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E89-A
IS - 10
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - October 2006
AB - Recently, lattice reduction aided (LRA) detectors have been introduced into Vertical Bell-Labs Layered Space-Time (V-BLAST) systems to obtain nearly optimal bit error rate (BER) performance for only small additional complexity. In this paper, the layer error characteristics of LRA-V-BLAST detectors are investigated and compared with those of conventional V-BLAST ones. Two important conclusions are drawn for the LRA-V-BLAST detectors. First, the variation of their mean square error (MSE) within each detection iteration is not as large as in conventional V-BLAST detectors. Second, thanks to lattice reduction there exists an inherent sub-optimal detection order from the last to the first layer. These conclusions allow LRA-V-BLAST detectors to avoid optimal ordering to further reduce the complexity. LRA-V-BLAST detectors without optimal ordering are shown to obtain almost the same BER performance of LRA-V-BLAST detector with optimal ordering.
ER -