Title :
A new frame-error estimation criterion for ARQ/HARQ schemes
Author :
Kumara, K. D R Jagath
Author_Institution :
Fac. of Eng., Univ. of Technol., Sydney, NSW, Australia
Abstract :
The techniques for estimating the reliability of received data frames in a digital communication link are investigated. Attention is given to those methods that use only the side information created during the decoding of the coded-modulation scheme employed by the link. It is shown that improved accuracy in estimation can be obtained by processing properly normalized decoder metrics. The performance of an ARQ scheme that uses the new criterion for estimation of errors is compared to one that uses an error detection code. For this purpose, two types of coded-modulation schemes, a short block code and a 256-state trellis code utilizing M-ary differential phase shift keying (DPSK) symbols, are considered
Keywords :
AWGN; automatic repeat request; block codes; data communication; decoding; differential phase shift keying; digital communication; error detection codes; fading channels; modulation coding; multipath channels; parameter estimation; protocols; telecommunication links; trellis codes; 256-state trellis code; ARQ/HARQ schemes; AWGN; DPSK symbols; M-ary differential phase shift keying; TCM; coded-modulation; decoding; digital communication link; error detection code; estimation accuracy; frame-error estimation; multipath fading; normalized decoder metrics; performance; protocols; received data frames; reliability; short block code; side information; AWGN; Additive white noise; Automatic repeat request; Block codes; Convolutional codes; Decoding; Gaussian noise; Law; Legal factors; Throughput;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.776668
