Hierarchical Coding Based on Multilevel Bit-Interleaved Channels

Motohiko ISAKA  Hideki IMAI  

IEICE TRANSACTIONS on Communications   Vol.E84-B   No.1   pp.1-9
Publication Date: 2001/01/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Fundamental Theories
multilevel coding,  bit-interleaving,  unequal error protection,  multistage decoding,  

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Channel coding for bandwidth limited channels based on multilevel bit-interleaved channels is discussed in this paper. This coding and decoding structure has the advantage of simplified design, and naturally incorporates flexible and powerful design of unequal error protection (UEP) capabilities, especially over time-varying channels to be often found in mobile radio communications. Multilevel coded modulation with multistage decoding, and bit-interleaved coded modulation are special cases of the proposed general framework. Simulation results verify the usefulness of the system considered.