Title :
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
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;
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
DOI :
10.1109/ICSCN.2007.350706
