Publications:Concatenated hybrid ARQ - a flexible scheme for wireless real-time communication

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Title Concatenated hybrid ARQ - a flexible scheme for wireless real-time communication
Author Elisabeth Uhlemann and T.M. Aulin and L.K. Rasmussen and Per-Arne Wiberg
Year 2002
PublicationType Conference Paper
Journal
HostPublication Eighth IEEE Real-Time and Embedded Technology and Applications Symposium : proceedings : September 25-27, 2002, San Jose, California
DOI http://dx.doi.org/10.1109/RTTAS.2002.1137379
Conference Eighth Real-Time and Embedded Technology and Applications Symposium, September 25-27, 2002, San Jose, California
Diva url http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:237583
Abstract The concept of deadline dependent coding (DDC) has previously been suggested by the authors for maximizing the probability of delivering the required information before a given deadline in a wireless communication system.. In this paper, these principles are further developed using concatenated codes with iterative decoding, providing a new level of flexibility and robustness for DDC protocols. The strategy of DDC is to combine different coding and decoding methods with automatic repeat request (ARQ) techniques in order to fulfill the application requirements within a wireless realtime communication system. These requirements are formulated as two quality of service (QoS) parameters: deadline (tDL) and probability of correct delivery before the deadline (Pd), leading to a probabilistic view of realtime communication. An application can negotiate these QoS parameters with the DDC protocol, thus creating a flexible and fault-tolerant scheme.