Title :
A type I hybrid ARQ system with adaptive code rates
Author :
Deng, R.H. ; Lin, M.L.
Author_Institution :
Inst. of Syst. Sci., Nat. Univ. of Singapore, Singapore
Abstract :
Type I hybrid ARQ systems use an error-control code of fixed rate for error-correction in each transmitted packet. In such systems, the code rate must be carefully chosen to match the channel bit error rate (BER) in order to maximize system throughput. Whenever there is a mismatch between code rate and channel BER, the throughput suffers. In this paper, we proposed a type I hybrid ARQ system which automatically adjusts its code rates to match channel BERs. The proposed system is very simple to implement and yet performs significantly better than type I hybrid ARQ systems of fixed code rate.<>
Keywords :
adaptive codes; automatic repeat request; channel coding; error correction codes; estimation theory; adaptive code rates; channel bit error rate; code rate; error-control code; error-correction; fixed rate; transmitted packet; type I hybrid ARQ system; Adaptive coding; Automatic repeat request; Bit error rate; Throughput;
Journal_Title :
Communications, IEEE Transactions on
