Publication Type : Journal Article
Publisher : Elsevier
Source : Procedia Computer Science, Elsevier B.V., Volume 143, p.876-885 (2018)
Keywords : Capacity-approaching, Correction performance, Error correction, GNU radio, Maximum a posteriori algorithm, Open Source Software, Radix 2, Soft-output Viterbi algorithm, SOVA, Turbo codes, Viterbi algorithm, Wireless communication standards, Wireless telecommunication systems
Campus : Bengaluru
School : School of Engineering
Department : Electronics and Communication
Year : 2018
Abstract : pTurbo codes are extensively used in wireless communication standards due to its capacity approaching performance. Maximum-A-Posteriori (MAP) algorithm and Soft Output Viterbi Algorithm (SOVA) are widely accepted decoding algorithms for Turbo codes. SOVA is a variant of Viterbi Algorithm and is less complex with moderate error correction performance as compared to MAP algorithm. In this paper, the branch symmetry property of radix-2 butterfly has been incorporated in to the SOVA algorithm to reduce the complexity of branch metric computation. The simulation results show that the computational complexity is reduced without degrading the error correction performance. Turbo CODEC block with SOVA and the low complex SOVA has been created in GNU Radio and the results were verified. © 2018 The Authors. Published by Elsevier B.V./p
Cite this Research Publication : P. Durga, Dr. Yamuna B., and Dr. Salija P., “Implementation of low complex SOVA in GNU radio”, Procedia Computer Science, vol. 143, pp. 876-885, 2018.