Telcos Investigate

Design and Implementation of PCM Decommutator on a Single FPGA

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Executive Summary

After frame synchronization, individual measurands are identified according to the frame location. The decommutator identifies and extracts Embedded Asynchronous Data Stream (EADS) words. Thus PCM Decommutator is a very crucial subsystem in the satellite data acquisition unit of satellite ground station. A PCM decommutator is designed and implemented on a stratix FPGA. The Hardware design comprises of four modules; Decommutator, FPGA on chip memory bank, Data storage on external FIFO banks and PCI-X master IP core integrated on the same FPGA. Decommutator will identify and separate the individual parameters from the incoming satellite PCM stream.

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