Title :
Analysis of reliability-based incremental redundancy with convolutional codes
Author :
Visotsky, Eugene ; Sun, Yakun ; Honig, Michael ; Tripathi, Vinayak
Author_Institution :
Motorola Labs., Schaumburg, IL, USA
fDate :
27 June-2 July 2004
Abstract :
Incremental redundancy, or hybrid type-II ARQ (HARQ), algorithms use a combination of forward error correction and retransmissions to guarantee reliable packet data communication. In our previous work (V. Tripathi et al. 2003), we have proposed an adaptive HARQ algorithm that exploits received codeword reliability for optimizing the size of the subsequent retransmissions. The optimization is based on two mappings: the codeword reliability to block error rate (BLER) mapping and the coding rate to codeword reliability mapping. We provide analytical approximations for these mappings for any convolutional code. Through simulations, the approximations are shown to be accurate in the range of interest.
Keywords :
automatic repeat request; block codes; convolutional codes; data communication; forward error correction; optimisation; packet radio networks; reliability; analytical approximation; block error rate mapping; codeword reliability; convolutional code; forward error correction; hybrid type-II ARQ algorithm; incremental redundancy; reliable packet data communication; Algorithm design and analysis; Automatic repeat request; Convolution; Convolutional codes; Decoding; Hamming weight; Random variables; Redundancy; Signal to noise ratio; Sun;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365333
