Concatenation schemes for the Gaussian channel with feedback (Corresp.)
J. Bibb Cain, Robert Simpson · IEEE Transactions on Information Theory · 1970
The use of feedback with concatenation is proposed as a technique for achieving the desired performance with less system complexity. Feedback can be used with the inner code, outer code, or both. The concatenation error exponents for several feedback schemes employing the Gaussian channel are determined analytically and found to be significantly better than those of the channel with no feedback.