A Novel One-Tap Frequency Domain RLS Equalizer Combined with Viterbi Decoder Using Channel State Information in OFDM Systems

Author

Kao, Yung-An ; Yang, Chih-An ; Lee, Shih-Kai

Author_Institution

Dept. of Electr. Eng., Chang-Gung Univ., Tao-Yuan

Volume

2

fYear

2006

fDate

25-28 June 2006

Firstpage

1107

Lastpage

1111

Abstract

In this paper, we present a one-tap frequency domain equalizer based on a modified RLS algorithm for OFDM systems. Compared to the conventional one-tap frequency domain NLMS (normalized least mean square) and RLS (recursive least square) equalizer, the division operation in the proposed algorithm is not required, and therefore as a benefit to the implementation. In addition, channel state information (CSI) can be obtained from the proposed adaptive equalizer to aid Viterbi decoder that makes the whole system more reliable

Keywords

OFDM modulation; Viterbi decoding; channel coding; equalisers; frequency-domain analysis; least mean squares methods; OFDM system; RLS equalizer; channel state information; one-tap frequency domain; orthogonal frequency division multiplexing; viterbi decoder; Channel state information; Decoding; Distortion; Equalizers; Fading; Frequency domain analysis; Least squares methods; OFDM; Resonance light scattering; Viterbi algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems Proceedings, 2006 International Conference on

Conference_Location

Guilin

Print_ISBN

0-7803-9584-0

Electronic_ISBN

0-7803-9585-9

Type

conf

DOI

10.1109/ICCCAS.2006.284841

Filename

4064082