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This paper investigates the optimal PET protection for streaming scalably compressed streams over networks where the delivery time constraints allow limited retransmissions (LR) and the communication channels exhibit both random losses and delays. A key property must be considered in this scenario is the possibility that a packet successfully arrives at the receiver in time, even if its acknowledgment...
Measurements made on an electric utility timekeeping system using standard IRIG-B time code and commercially available equipment are discussed. An attempt is made to determine whether this technique can reliably transfer time accuracies of one millisecond and accuracies of 5 to 50 microseconds. A new method of propagation delay measurement using two synchronized time code generators is introduced...
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