SOVA-Based Turbo Equalization and Decoding for Indoor Wireless Channels

Author

Tripathy, Aruna ; Pathak, S.S. ; Chakrabarti, Saswat

Author_Institution

Dept. of Electron. & Electr. Commun., Indian Inst. of Technol., Kharagpur

fYear

2007

fDate

22-24 Feb. 2007

Firstpage

106

Lastpage

111

Abstract

The soft output Viterbi algorithm (SOVA) is used for data detection in indoor wireless channels representative of the JTC and wireless local area network (WLAN). The performance of SOVA-SOVA permutation as an equalizer followed by a decoder is evaluated by simulation experiment. The performance does not improve much for more than three iterations in these ISI channels. The results obtained for 1 dB to 4 dB bit energy to noise power approach the coded AWGN performance by the end of the third iteration

Keywords

AWGN channels; Viterbi decoding; channel coding; channel estimation; equalisers; indoor radio; intersymbol interference; iterative decoding; turbo codes; wireless channels; AWGN performance; ISI channels; JTC; SOVA-SOVA permutation; WLAN; channel decoding; data detection; indoor wireless channels; iterative decoding; soft output Viterbi algorithm; turbo equalization; wireless local area network; AWGN; Additive white noise; Equalizers; Finite impulse response filter; Intersymbol interference; Matched filters; Maximum likelihood decoding; Transversal filters; Viterbi algorithm; Wireless LAN; Extrinsic Information; ISI; JTC; SOVA; WLAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, Communications and Networking, 2007. ICSCN '07. International Conference on

Conference_Location

Chennai

Print_ISBN

1-4244-0997-7

Electronic_ISBN

1-4244-0997-7

Type

conf

DOI

10.1109/ICSCN.2007.350706

Filename

4156594