Moderate Deviations in Channel Coding
Yücel Altuğ, Aaron B. Wagner · IEEE Transactions on Information Theory · 2014
We consider block codes whose rate converges to the channel capacity with increasing blocklength at a certain speed and examine the best possible decay of the probability of error. For discrete memoryless channels, we prove that a moderate deviation principle holds for all convergence rates between the large deviation and the central limit theorem regimes.