ON MULTILEVEL BLOCK MODULATION CODES

被引：50

作者：

KASAMI, T ^{[1
]}

TAKATA, T ^{[1
]}

FUJIWARA, T ^{[1
]}

LIN, S ^{[1
]}

机构：

[1] UNIV HAWAII MANOA, DEPT ELECT ENGN, HONOLULU, HI 96822 USA

来源：

IEEE TRANSACTIONS ON INFORMATION THEORY | 1991年 / 37卷 / 04期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

MULTILEVEL MODULATION CODES; BASIC MULTILEVEL CODES; SIGNAL LABELING; CROSS-OVER CONSTRUCTION; TRELLIS DIAGRAM; ERROR-CORRECTING CODES; COSET CODES; LATTICES;

D O I：

10.1109/18.86990

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The multilevel technique for combining block coding and modulation is investigated. First, a general formulation is presented for multilevel modulation codes in terms of component codes with appropriate distance measures. Then a specific method for constructing multilevel block modulation codes with interdependency among component codes is proposed. Given a multilevel block modulation code C with no interdependency among the binary component codes, the proposed method gives a multilevel block modulation code C' that has the same rate as C, a minimum squared Euclidean distance not less than that of C, a trellis diagram with the same number of states as that of C and a smaller number of nearest neighbor codewords than that of C. Finally, a technique is presented for analyzing the error performance of block modulation codes for an AWGN channel based on soft-decision maximum likelihood decoding. Error probabilities of some specific codes are evaluated by simulation and upper bounds based on their Euclidean weight distributions.

引用

页码：965 / 975

页数：11

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