## A Comparison of Sequential Decoding Metrics by Computer Simulation |

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### Contents

IMPORTANT CONVOLUTIONAL CODE PROPERTIES | 4 |

THE LOGAPOSTERIORI PROBABILITY METRIC | 14 |

THE CROSSCORRELATION METRIC | 22 |

5 other sections not shown

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### Common terms and phrases

Accum accumulated node metric additive amplitude fluctuations Average Branch binary symbols bit error probability bit estimates BIT NUMBER bits per frame Branch Correlation Metric branch metric channel capacity code rate code tree computations per bit computer simulation constraint-length convolutional code convolutional encoder correct path correlation metric bias correlation metric decoder cross-correlation data sequence decibels decoder computations defined density deviation ratio digits encoder's Equation Fano algorithm function gaussian noise Hamming distance ICZERO incorrect branches information bit input KSRL KV symbol LAP metric log-a-posteriori probability metric matched filter move-forward loop node vector number of bits number of computations optimum decoder output overflow distributions overflow limit overflow probability parity symbol pseudorandom quantized metric rate 1/2 code rate 1/2 convolutional received signal search-mode loop selected sensitivity sequential decoder shift register shown in Figure signal amplitude signal-to-noise ratio subcarrier symbol metric system model tail symbols threshold spacing Tree Search Algorithm zero