Equalization and Interference Cancellation with MIMO THP for 10GBASE-T

Author

Chien, Ying-Ren ; Tu, Yen-Ting ; Tsao, Hen-Wai ; Mao, Wei-Lung

Author_Institution

System Integrated Laboratory, Graduate Institute of Communication Engineering, National Taiwan University

fYear

2007

fDate

17-19 Oct. 2007

Firstpage

95

Lastpage

100

Abstract

Unlike 1000BASE-T system, the far-end crosstalk (FEXT) must be suppressed by at least 20 dB to meet the high speed transmission requirement for 10GBASE-T. Without FEXT cancellation, the average decision-point signal-to-noise ratio (DP-SNR) can degrade by 3 dB. This paper presents a multi-input multi-output Tomlinson-Harashima precoding (MIMO THP) technique to equalize the channel and to cancel the FEXT interference. Besides, the corresponding training method to deal with delay skew among channels and the arrangement of different step-size in least mean square (LMS) adaptive algorithm are proposed as well. Simulation results show that delay skew compensation and step-sizes arrangement can improve DP-SNR by 4.59 dB and 1.62 dB, respectively. The proposed MIMO THP architecture improves the DP-SNR by 2.75 dB than The tenative decision based approach.

Keywords

Bit error rate; Crosstalk; Decision feedback equalizers; Degradation; Delay; Interference cancellation; Intersymbol interference; MIMO; Optical fiber devices; Signal to noise ratio; Far-end crosstalk; MIMO TH precoding; MIMO system;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Systems, 2007 IEEE Workshop on

Conference_Location

Shanghai, China

ISSN

1520-6130

Print_ISBN

978-1-4244-1222-8

Electronic_ISBN

1520-6130

Type

conf

DOI

10.1109/SIPS.2007.4387525

Filename

4387525