Performance improvement of joint THP/pre-FDE with lattice reduction using LLL-algorithm

Author

Takeda, Kazuki ; Tomeba, Hiromichi ; Adachi, Fumiyuki

Author_Institution

Dept. of Electr. & Commun. Eng., Tohoku Univ., Sendai, Japan

fYear

2008

fDate

19-21 Nov. 2008

Firstpage

1379

Lastpage

1383

Abstract

Average bit error rate (BER) performance of single-carrier (SC) transmission significantly degrades due to the strong inter-symbol interference (ISI) in a severe frequency-selective fading channel. Recently, we proposed a joint Tomlinson-Harashima precoding (THP)/frequency-domain pre-equalization (pre-FDE) using LQ-decomposition to improve the BER performance of SC transmission. However, since the dummy symbols insertion is necessary, the data rate reduces. In this paper, we apply LLL-algorithm to joint THP/pre-FDE to avoid the dummy symbol insertion and evaluate the BER performance by computer simulation.

Keywords

equalisers; error statistics; fading channels; intersymbol interference; matrix decomposition; precoding; BER; LLL-algorithm; LQ-decomposition; Tomlinson-Harashima precoding; bit error rate; dummy symbol insertion; frequency-domain pre-equalization; frequency-selective fading channel; inter-symbol interference; lattice reduction; single-carrier transmission; Bit error rate; Computer simulation; Data communication; Degradation; Downlink; Frequency; Intersymbol interference; Lattices; Quadrature amplitude modulation; Transmitters; LLL-algorithm; Pre-equalization; Tomlinson-Harashima precoding; components;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, 2008. ICCS 2008. 11th IEEE Singapore International Conference on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-2423-8

Electronic_ISBN

978-1-4244-2424-5

Type

conf

DOI

10.1109/ICCS.2008.4737409

Filename

4737409