Computation reduction for turbo decoding through window skipping. Issue 3 (1st February 2016)

• Record Type: Journal Article
• Authors: Martina, M.; Condo, C.; Roch, M.R.; Masera, G.
• Is Part Of: Electronics letters. Volume 52:Issue 3(2016)
• Page Start: 202
• Page End: 204
• Publication Date: 2016-02-01
• Subjects: turbo codes -- decoding -- entropy -- power consumption; computation reduction -- turbo code decoding -- window skipping -- cross‐entropy measure approximation -- thresholding -- power consumption reduction; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.3965
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A simple and effective technique to skip the computation of reliable portions of a frame (windows) for turbo code decoding is proposed. The proposed criterion relies on a very simple approximation of cross‐entropy measure by means of thresholding. This criterion features negligible complexity and low‐memory requirements. Simulation results show that, in the best case, up to 20% of windows can be skipped with no error‐rate degradation. Such a significant computation reduction can be exploited to directly reduce the power consumption as well.