A new two-step precoding based on rotation transformations in closed-loop MIMO systems

Heunchul Lee; Seokhwan Park; Inkyu Lee

doi:10.1109/VETECF.2008.115

A new two-step precoding based on rotation transformations in closed-loop MIMO systems

Heunchul Lee, Seokhwan Park, Inkyu Lee

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, we propose a two-step precoding approach for multiple-input multiple-output (MIMO) systems by dividing the precoding process into two steps: spatial multiplexing transformation which establishes orthogonalized subchannels with the same quality and beamforming transformation which achieves diversity gain. In the proposed precoding method, we improve the system performance by maximizing the minimum Euclidean distance between the received signals. Compared with the optimal singular value decomposition based precoding methods, the proposed approach significantly reduces the processing complexity as well as the feedback overhead since precoding techniques are based on simple rotation transformations.

Original language	English
Title of host publication	The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
DOIs	https://doi.org/10.1109/VETECF.2008.115
Publication status	Published - 2008
Event	68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada Duration: 2008 Sept 21 → 2008 Sept 24

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Other

Other	68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
Country/Territory	Canada
City	Calgary, AB
Period	08/9/21 → 08/9/24

ASJC Scopus subject areas

Computer Science Applications
Electrical and Electronic Engineering
Applied Mathematics

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10.1109/VETECF.2008.115

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Lee, H, Park, S & Lee, I 2008, A new two-step precoding based on rotation transformations in closed-loop MIMO systems. in The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall., 4656947, IEEE Vehicular Technology Conference, 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference, Calgary, AB, Canada, 08/9/21. https://doi.org/10.1109/VETECF.2008.115

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year = "2008",

doi = "10.1109/VETECF.2008.115",

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AB - In this paper, we propose a two-step precoding approach for multiple-input multiple-output (MIMO) systems by dividing the precoding process into two steps: spatial multiplexing transformation which establishes orthogonalized subchannels with the same quality and beamforming transformation which achieves diversity gain. In the proposed precoding method, we improve the system performance by maximizing the minimum Euclidean distance between the received signals. Compared with the optimal singular value decomposition based precoding methods, the proposed approach significantly reduces the processing complexity as well as the feedback overhead since precoding techniques are based on simple rotation transformations.

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A new two-step precoding based on rotation transformations in closed-loop MIMO systems

Abstract

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