Multi-dimensional Constellation Tilting for Reducing the Power Loss of Tomlinson-Harashima Precoder

Authors:
Joondoo Kim;Chungyong Lee
Affiliations:
Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea 120-749;Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea 120-749
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

Citing 2
Cited 0

Tomlinson-Harashima precoder with tilted constellation for reducing transmission power

IEEE Transactions on Wireless Communications
Precoding in multiantenna and multiuser communications

IEEE Transactions on Wireless Communications

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Abstract

We propose a multi-dimensional extension of the constellation tilting (CT) method for reducing the power loss of Tomlinson-Harashima precoding. By the extension, constellations for multiple signal streams are simultaneously rotated at a proper angle so that the number of available tilting angles is rapidly increased. Then, this growth of the available angles improves the performance of CT and computer simulations show that the proposed extension obtains the enhanced power reduction effect.