Title :
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
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;
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
DOI :
10.1109/ICCCAS.2006.284841
