Hardware Architecture of Improved Tomlinson-Harashima Precoding for Downlink MC-CDMA

Author

Lin, Kuang-Hao ; Lin, Hsin-Lei ; Chang, Robert C. ; Wu, Ching-Fen

Author_Institution

Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

1200

Lastpage

1203

Abstract

In this paper, Tomlinson-Harashima precoding (THP) algorithm for the downlink of MC-CDMA system, in which multiple-access interference and possible complexity in the mobile terminal are major burdens, is investigated. A new THP based on the minimum mean-square error (MMSE) criterion is derived. It has the better performance than the zero forcing (ZF) THP. The authors proposed the hardware architecture of MMSE THP at the transmitter and analyzed the required word length. The pipeline and parallel processes are employed to efficiently save time of executing procedure

Keywords

OFDM modulation; channel coding; code division multiple access; least mean squares methods; MC-CDMA; Tomlinson-Harashima precoding; minimum mean-square error; multiple-access interference; orthogonal frequency division multiplexing; zero forcing; Downlink; Feedback; Hardware; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection; Nonlinear filters; OFDM; Transmitters; MC-CDMA; MMSE; OFDM; THP; ZF; precoding;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342357

Filename

4145614