Title :
An adaptive ARQ scheme using pragmatic TCM
Author :
Lin, Michael L. ; Deng, Robert H.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
We propose an adaptive automatic repeat request (ARQ) scheme using pragmatic trellis-coded modulations (TCMs) and soft-decision Viterbi decoding. The scheme adapts to the changing channel noise condition by selecting the TCM with a code rate which best matches the current channel signal-to-noise ratio (SNR). A simple and yet efficient algorithm for estimating channel SNR is also proposed
Keywords :
Viterbi decoding; adaptive codes; automatic repeat request; channel coding; error correction codes; telecommunication channels; trellis coded modulation; SNR; adaptive ARQ; adaptive automatic repeat request; algorithm; channel SNR estimation; channel noise condition; channel signal-to-noise ratio; code rate; pragmatic TCM; pragmatic trellis-coded modulation; soft-decision Viterbi decoding; Automatic repeat request; Bit error rate; Communication channels; Decoding; Digital communication; Modulation coding; Rain; Satellite communication; Signal to noise ratio; Viterbi algorithm;
Conference_Titel :
Singapore ICCS '94. Conference Proceedings.
Print_ISBN :
0-7803-2046-8
DOI :
10.1109/ICCS.1994.474175
