Turbo Decoder Dynamic Reconfiguration in Urban/Suburban Outdoor Operating Environment for 3GPP

Quality of service (QoS) is a key issue in the design of mobile systems. In 3GPP systems, in order to realise a particular service, the QoS requirements in terms of performance and latency, have to be satisfied. Considering the QoS classification according to the priority of latency or performance, possible examples of service scenarios are examined for flat Rayleigh fading channels with emphasis on the turbo decoding algorithm. For a particular operating environment considering SOVA and log-MAP algorithms due to their data-flow similarities, this paper shows that SOVA and log-MAP can be dynamically reconfigured. Particularly, SOVA is clearly optimal for most of real-time applications except for high data rates, whereas for non-real time applications both algorithms are suitable.