Multilevel Coding with Adaptive Equalization and interleaving for Fading Channel (Special Section on Information Theory and Its Applications)

概要

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In high-speed digital land mobile radio communication, communication quality is degraded by frequency selective fading that has intersymbol interference. It causes increase of bit error rate (BER). To decrease BER in the channel, this paper proposes a system with combined multilevel coding and adaptive equalization using interleaving. By using interleaving,the proposed system obtains time diversity effect. Furthermore the system realizes a type of decision feedback adaptive equalizer where a signal after multilevel decoder is fed back. These features of the system cause decrease of BER. The proposed system is compared with a similar system with a feedback signal before multilevel decoder. The average bit error rate of the proposed system is less than 1/100 with that of the compared system at average E_b/No = 22 [dB] in a case of fading channel with one intersymbol interference.
社団法人電子情報通信学会の論文
1996-09-25