Digital communications: fundamentals and applications
Digital communications: fundamentals and applications
Mobile Radio Communications
WCDMA for UMTS: Radio Access for Third Generation Mobile Communications
WCDMA for UMTS: Radio Access for Third Generation Mobile Communications
Microwave Mobile Communications
Microwave Mobile Communications
Iterative decoding of binary block and convolutional codes
IEEE Transactions on Information Theory
Design and analysis of turbo codes on Rayleigh fading channels
IEEE Journal on Selected Areas in Communications
Novel results on adaptive UMTS outer block interleaving using SOVA turbo decoder
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
Novel Results on 3G Reconfigurable Outer Block Interleaving Based on FER
Wireless Personal Communications: An International Journal
VLSI architectures for sliding-window-based space-time turbo trellis code decoders
Journal of Electrical and Computer Engineering - Special issue on Implementations of Signal-Processing Algorithms for OFDM Systems
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Quality of service is a critical consideration in the design of mobile systems, since it allows the user to receive high quality services. Therefore, in 3GPP systems, in order to realise a particular service, the quality of service requirements in terms of performance and latency, have to be satisfied. Turbo code features include parallel code concatenation, recursive convolutional encoding, nonuniform interleaving and an associated iterative decoding algorithm. Exploiting the quality of service 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. Particularly, for two operating environments considering SOVA and log-MAP algorithms due to their data-flow similarities, this paper shows that SOVA is clearly optimal for most of the real-time applications, whereas for nonreal time applications with low data rate and small frames log-MAP is preferred. The use of the optimum algorithm in most scenarios results in a more efficient turbo decoder: applications that otherwise would have failed now can be realised.