Performance of soft-output equalization and convolutional coding over frequency-selective fading radio channels
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
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This paper presents an analysis of soft-output equalization and coding techniques applied to 4 and 16-QAM TDMA radio systems for frequency selective fading channels. In particular, typical urban and hilly terrain environments have been considered. The use of the soft information provided by the equalizer enhances the system performance considerably. Specifically, an improvement of more than 4 dB can be achieved in relation to hard decoding techniques. The necessity of introducing some interleaving in order to destroy the channel memory has also been stated. The actual investigated equalizers have been a soft-output decision-feedback equalizer (SODFE) and a soft-decision M-algorithm (SDMA) jointly with convolutional coding and both ideal and finite interleaving.
CitationValdovinos, A., Gelonch, A.J., Casadevall, F. Performance of soft-output equalization and convolutional coding over frequency-selective fading radio channels. A: IEEE International Symposium on Personal Indoor and Mobile Radio Communications. "5th International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks Catching the Mobile Future: The Hague, The Netherlands: September 18-23, 1994". The Hague, The Netherlands: Institute of Electrical and Electronics Engineers (IEEE), 1993.