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Voice-Band Data Modem Performance Over Companded Delta Modulation Channels

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3 Author(s)
May, P. ; Stromberg-Carson Socp., Rochester, N.Y. ; Zarcone, C. ; Ozone, K.

This paper reports upon the results of tests of the transmission of data over single- and multiple-hop companded delta modulation (DM) systems. The DM coder-decoder (CODEC) was optimized for voice transmission. Modem bit error rate (BER) achievable over the range of 1200-9600 bits/s is presented. A comparison with the performance of pulse code modulation (PCM) is included. The comparison indicates that the two systems are comparable for error-free digital lines but favors the DM system for lines with errors.

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Communications, IEEE Transactions on  (Volume:23 ,  Issue: 12 )