We view a hybrid ARQ scheme as an incremental accumulation of redundancy at the receiver. A hybrid ARQ design problem is formulated as a research for the sequence of redundancies maximizing throughput or minimizing delay. The optimization is performed within the framework of a Markov decision process. The state space is defined as the total accumulated redundancy at the receiver. The transition probabilities model the error-correcting capability of the code and properties of the channel. Employing a dynamic programming approach, the optimum sequence of redundancies is characterized.
|Original language||English (US)|
|Number of pages||1|
|Journal||IEEE International Symposium on Information Theory - Proceedings|
|State||Published - Oct 20 2003|
ASJC Scopus subject areas
- Electrical and Electronic Engineering