New Ternary Line Codes Based on Trellis Structure

Document Type

Article

Publication Date

1-1-1993

Abstract

The trellis coding technique is applied to line-coded baseband digital transmission systems. For R = n/n + 1(n = 1,2,3) coding rates, a new codeword assignment model is proposed to accomplish basic requirements for line coding in which each length n binary data sequence is encoded into a length n + 1 ternary (+,0,—) line codeword chosen among the code alphabet with 2n+2 elements. Assuming Viterbi decoding, the system error performance is improved by increasing the free Euclidean distance between coded sequences. A new algorithm is given for the calculation of the free distance between line-coded sequences so obtained. For R = 1/2 and R = 3/4 rates, the analytical error performance upper bounds are derived. The power spectral densities of the new line codes are also calculated and compared with those of known line codes. © 1993 IEEE.

Identifier

0027618007 (Scopus)

Publication Title

IEEE Transactions on Communications

External Full Text Location

https://doi.org/10.1109/26.231909

ISSN

00906778

First Page

864

Last Page

873

Issue

6

Volume

41

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