Cross-Over Component Code Construction for Multi-Level Block Modulation Codes

Tadao KASAMI  Toyoo TAKATA  Toru FUJIWARA  Shu LIN  

Publication
IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.10   pp.1657-1665
Publication Date: 1990/10/25
Online ISSN: 
DOI: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on Communication Theory and Its Applications)
Category: Modulation and Demodulation
Keyword: 


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Summary: 
In this paper, we investigate the multi-level technique for combining block coding and modulation. We present several specific methods for constructing multi-level block modulation codes with interdependency among component codes. Given a multi-level block modulation code C with no interdependency among the binary component codes, the proposed methods give a multi-level block modulation code C which has the same rate as C, a minimum squared Euclidean distance not less than that of C, a trellis diagram with the same mumber of states as that of C and a smaller number of nearest neighbor codewords than that of C.