SMI Adaptive Beamforming Based on Frequency-to-Time Pilot Transform for OFDM System

Ming LEI; Hiroshi HARADA

doi:10.1093/ietcom/e89-b.8.2261

SMI Adaptive Beamforming Based on Frequency-to-Time Pilot Transform for OFDM System

Ming LEI, Hiroshi HARADA

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We propose an adaptive beamforming scheme for the combination of orthogonal frequency division multiplexing (OFDM) and adaptive antenna array. The combinational scheme is characterized by the sample matrix inverse (SMI) algorithm, frequency-to-time pilot transform and pre-FFT combination. For every OFDM block containing both data and pilot symbols, we transform the frequency-domain pilot symbols to the corresponding time-domain components. One of the obvious advantages of this transform is that the time interval of the antenna weight vector update can be reduced to only one OFDM sample interval, from one OFDM block interval of the conventional beamforming scheme in which the transform is not applied. This feature can greatly accelerate the convergence of SMI beamforming. The simulation results verify that the proposed beamforming scheme is capable of improving the convergence behavior significantly.

Publication: IEICE TRANSACTIONS on Communications Vol.E89-B No.8 pp.2261-2265

Publication Date: 2006/08/01

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Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e89-b.8.2261

Type of Manuscript: LETTER

Category: Wireless Communication Technologies

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Ming LEI, Hiroshi HARADA, "SMI Adaptive Beamforming Based on Frequency-to-Time Pilot Transform for OFDM System" in IEICE TRANSACTIONS on Communications, vol. E89-B, no. 8, pp. 2261-2265, August 2006, doi: 10.1093/ietcom/e89-b.8.2261.
Abstract: We propose an adaptive beamforming scheme for the combination of orthogonal frequency division multiplexing (OFDM) and adaptive antenna array. The combinational scheme is characterized by the sample matrix inverse (SMI) algorithm, frequency-to-time pilot transform and pre-FFT combination. For every OFDM block containing both data and pilot symbols, we transform the frequency-domain pilot symbols to the corresponding time-domain components. One of the obvious advantages of this transform is that the time interval of the antenna weight vector update can be reduced to only one OFDM sample interval, from one OFDM block interval of the conventional beamforming scheme in which the transform is not applied. This feature can greatly accelerate the convergence of SMI beamforming. The simulation results verify that the proposed beamforming scheme is capable of improving the convergence behavior significantly.
URL: https://globals.ieice.org/en_transactions/communications/10.1093/ietcom/e89-b.8.2261/_p

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@ARTICLE{e89-b_8_2261,
author={Ming LEI, Hiroshi HARADA, },
journal={IEICE TRANSACTIONS on Communications},
title={SMI Adaptive Beamforming Based on Frequency-to-Time Pilot Transform for OFDM System},
year={2006},
volume={E89-B},
number={8},
pages={2261-2265},
abstract={We propose an adaptive beamforming scheme for the combination of orthogonal frequency division multiplexing (OFDM) and adaptive antenna array. The combinational scheme is characterized by the sample matrix inverse (SMI) algorithm, frequency-to-time pilot transform and pre-FFT combination. For every OFDM block containing both data and pilot symbols, we transform the frequency-domain pilot symbols to the corresponding time-domain components. One of the obvious advantages of this transform is that the time interval of the antenna weight vector update can be reduced to only one OFDM sample interval, from one OFDM block interval of the conventional beamforming scheme in which the transform is not applied. This feature can greatly accelerate the convergence of SMI beamforming. The simulation results verify that the proposed beamforming scheme is capable of improving the convergence behavior significantly.},
keywords={},
doi={10.1093/ietcom/e89-b.8.2261},
ISSN={1745-1345},
month={August},}

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TY - JOUR
TI - SMI Adaptive Beamforming Based on Frequency-to-Time Pilot Transform for OFDM System
T2 - IEICE TRANSACTIONS on Communications
SP - 2261
EP - 2265
AU - Ming LEI
AU - Hiroshi HARADA
PY - 2006
DO - 10.1093/ietcom/e89-b.8.2261
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E89-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 2006
AB - We propose an adaptive beamforming scheme for the combination of orthogonal frequency division multiplexing (OFDM) and adaptive antenna array. The combinational scheme is characterized by the sample matrix inverse (SMI) algorithm, frequency-to-time pilot transform and pre-FFT combination. For every OFDM block containing both data and pilot symbols, we transform the frequency-domain pilot symbols to the corresponding time-domain components. One of the obvious advantages of this transform is that the time interval of the antenna weight vector update can be reduced to only one OFDM sample interval, from one OFDM block interval of the conventional beamforming scheme in which the transform is not applied. This feature can greatly accelerate the convergence of SMI beamforming. The simulation results verify that the proposed beamforming scheme is capable of improving the convergence behavior significantly.
ER -