Robust Tomlinson-Harashima Precoding

Author

Dietrich, Frank A. ; Utschick, Wolfgang

Author_Institution

Inst. for Circuit Theor. & Signal Process., Munich Univ. of Technol.

Volume

1

fYear

2005

fDate

11-14 Sept. 2005

Firstpage

136

Lastpage

140

Abstract

Tomlinson-Harashima precoding (THP) for a wireless system with multiple cooperative transmitters and non-cooperative receivers is considered (downlink channel). In the literature THP has been optimized for this channel assuming complete channel state information (CSI). But quality of CSI is generally poor at the transmitter due to the time-varying channel. We present a robust optimization of THP and a combined optimization of THP and channel estimation, which take into account the quality of CSI. They yield a significantly improved robustness towards errors in CSI

Keywords

channel coding; channel estimation; precoding; radio links; time-varying channels; wireless channels; Tomlinson-Harashima precoding; channel estimation; channel state information; downlink channel; multiple cooperative transmitters; noncooperative receivers; time-varying channel; wireless system; Channel estimation; Design optimization; Downlink; Feedback; Mean square error methods; Receiving antennas; Robustness; Stochastic processes; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on

Conference_Location

Berlin

Print_ISBN

9.7838007291e+012

Type

conf

DOI

10.1109/PIMRC.2005.1651414

Filename

1651414