A Factor-Graph Schedule for Stream-Oriented Turbo Codes

Alexandre de Andrade, Jaime Portugheis

DOI: 10.14209/sbrt.2004.177

Evento: XXI Simpósio Brasileiro de Telecomunicações (SBrT2004)

Keywords: Stream-Oriented Turbo Codes Convolutional Interleaver Factor-Graphs Decoding Schedules

Abstract

The paper considers the application of a factorgraph approach to decoding stream-oriented turbo codes. The decoding schedule proposed can be interpreted as only two decoder modules replacing the pipelined structure originally used in stream-oriented decoding. Simulation results corroborate the efficiency of the schedule and also show potential improvements that can be obtained by using MAP instead of Max-Log-MAP calculations.

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