A Typical Channel Model of Digital Mobile Communication Applied in Speech Coding

The Gilbert-Elliot Markov digital channel model (GE model) is used for the channel model in digital mobile communication. The statistical characterization of burst error for this model is analyzed. The performance of the speech signal output under the condition of channel different average bit error rates p and the channel outputby the use different interleaving factors s with speech coding methods--the CCITTstandard PCM with the bit rate of 64kb/s and ADPCM with the rate of 32kb/s, are calculated. For a comparison, the output performance of the Bernoulli model (BR model) with the statiatic independent error characterization under the condition of the above mentioned speech coding, is studied. The two channel model have similar SNR performance in their output speech signals with the above speech coding method under coditions of lower channel average bit error rates.