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New Cyclic Precoding Vectors for Open-loop Transmit Diversity Techniques
BibTeX
@MISC{Lee_newcyclic,
author = {Kyoung-jae Lee and Heunchul Lee and Regular Members and Inkyu Lee and Lifelong Member},
title = {New Cyclic Precoding Vectors for Open-loop Transmit Diversity Techniques},
year = {}
}
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Abstract
In this paper, we propose a new transmit diversity technique for multiple-input multiple-output (MIMO) systems to improve the link level performance of open-loop systems. By cyclically applying a predetermined set of precoding weight vectors, artificially induced fluctuation is created to achieve additional diversity gain in flat fading channels. To design the set of the precoding vectors, we exploit the knowledge on the distribution of near optimum precoding vectors observed in a beamforming scheme based on the rotation transformations. Simulation results demonstrate that the proposed open-loop diversity scheme with an arbitrary number of transmit antennas achieves a full diversity gain with computational complexity comparable to a single-input single-output (SISO) system.
Keyphrases
new cyclic precoding vector open-loop transmit diversity technique computational complexity simulation result full diversity gain arbitrary number precoding vector single-input single-output open-loop diversity scheme flat fading channel predetermined set beamforming scheme link level performance multiple-input multiple-output open-loop system weight vector new transmit diversity technique additional diversity gain near optimum precoding vector induced fluctuation rotation transformation
