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A Flexible UMTS-WiMax Turbo Decoder Architecture

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3 Author(s)
Maurizio Martina ; Politec. di Torino, Turin ; Mario Nicola ; Guido Masera

This work proposes a VLSI decoding architecture for concatenated convolutional codes. The novelty of this architecture is twofold: 1) the possibility to switch on-the-fly from the universal mobile telecommunication system turbo decoder to the WiMax duo-binary turbo decoder with a limited resources overhead compared to a single-mode WiMax architecture; and 2) the design of a parallel, collision free WiMax decoder architecture. Compared to two single-mode solutions, the proposed architecture achieves a complexity reduction of 17.1% and 27.3% in terms of logic and memory, respectively. The proposed, flexible architecture has been characterized in terms of performance and complexity on a 0.13-mum standard cell technology, and sustains a maximum throughput of more than 70 Mb/s.

Published in:

IEEE Transactions on Circuits and Systems II: Express Briefs  (Volume:55 ,  Issue: 4 )