Collecting data for Markov models of error patterns on data communications links

ABSTRACT

Rome Laboratory is currently in the process of procuring Error Injector Units (EIU) to model the error behavior of data communications channels. A major component of this effort deals with finding Markov models that will simulate the behavior of these channels. This paper reports on the results of a Summer Faculty Research Fellowship to find Markov tables to load into the EIUs. A portion of the research involved searching current literature for Markov tables or error gap data. Alternative approaches to obtaining the desired Markov tables were also considered. This included substantial effort devoted to the design of a data collection experiment that could be used at Rome Laboratory to produce the needed data. This effort included the design of a microcomputer interface that would permit a microcomputer to monitor a "Fireberd" bit error rate tester and record the error statistics for analysis and conversion to a Markov table.

REFERENCES

• 1: Gilbert, E. N., "Capacity of a Burst-Noise Channel," .Bell Systems Technical Journal, Vol 39, pp 1253-1266, Sept. 1960.
• 2: Fritzman, B. D., "A Binary Channel Characterization Using Partitioned Markov Chains," IEEE Transactions on Information Theory, Vol. IT-13, pp 221-227, April 1967.
• 3: Tsai, S., "Markov Characterization of the HF Channel," IEEE Transactions on Communications Technology, Vol Corn-17, pp 24-32, Feb. 1969.