Abstract
An explanation is given for the paradoxical fact that, at low signal-to-noise ratios, the systematic feedback encoder results in fewer decoding bit errors than does a nonsystematic feedforward encoder for the same code. The analysis identifies a new code property, the d-distance weight density of the code. For a given d-distance weight density, the decoding bit error probability depends on the number of taps in the realization of the encoder inverse. Among all encoders for a given convolutional code, the systematic one has the simplest encoder inverse and, hence, gives the smallest bit error probability
Original language | English |
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Title of host publication | [Host publication title missing] |
Pages | 398 |
DOIs | |
Publication status | Published - 2000 |
Event | 2000 International Symposium on Information Theory - Sorrento, Italy Duration: 2000 Jun 21 → 2000 Jun 25 |
Conference
Conference | 2000 International Symposium on Information Theory |
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Country/Territory | Italy |
City | Sorrento |
Period | 2000/06/21 → 2000/06/25 |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering