## Abstract

We motivate and discuss the Logarithmic Bit-

Significance Ratio (S-value) which is a universal measure to quantify the significance of each bit in a digital communication system. Calculation rules for the S-values are given which, for instance, allow for the computation of the significances of parity bits when the significances of the data bits are given. The introduction of the S-value allows for the processing of soft information, e.g., in encoding and modulation and can, hence, be interpreted as the transmitter-based counterpart of the well established log-likelihood ratio (L-value) at the receiving end.

Significance Ratio (S-value) which is a universal measure to quantify the significance of each bit in a digital communication system. Calculation rules for the S-values are given which, for instance, allow for the computation of the significances of parity bits when the significances of the data bits are given. The introduction of the S-value allows for the processing of soft information, e.g., in encoding and modulation and can, hence, be interpreted as the transmitter-based counterpart of the well established log-likelihood ratio (L-value) at the receiving end.

Original language | English |
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Title of host publication | Proc., 2006 IEEE Inter. Symp. Information Theory, Seattle |

Publisher | IEEE - Institute of Electrical and Electronics Engineers Inc. |

Pages | 2869-2873 |

Number of pages | 5 |

ISBN (Print) | 1-4244-0504-1 |

DOIs | |

Publication status | Published - 2006 |

Event | IEEE International Symposium on Information Theory, 2006 - Seattle, Seattle, WA, United States Duration: 2006 Jul 9 → 2006 Jul 14 |

### Conference

Conference | IEEE International Symposium on Information Theory, 2006 |
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Abbreviated title | ISIT06 |

Country/Territory | United States |

City | Seattle, WA |

Period | 2006/07/09 → 2006/07/14 |

## Subject classification (UKÄ)

- Electrical Engineering, Electronic Engineering, Information Engineering

## Free keywords

- Joint source-channel coding
- digitizing of signals
- soft information
- bit significance