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The Performance of ST-Turbo TC Based on the Improved Log-MAP Algorithm

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Abstract

The iterative decoding in turbo code has very high decoding complexity. This paper adopts the improved Log-MAP algorithm for decoding of Space-Time Turbo Trellis Code (ST-Turbo TC) in the slow Rayleigh fading channels. Using the MacLaurin formulae, the proposed algorithm expands the logarithmic function of the Log-MAP. It makes the computation much easier and the operation of the hardware system much faster. Simulation results show that the proposed algorithm performs very closely to the Log-MAP algorithm for decoding of ST-Turbo TC in slow Rayleigh fading channels.

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Authors and Affiliations

  1. School of Information Science and Engineering, East China University of Science and Technology, Shanghai, China

    Yao-Jun Wu, Li-Xin Li & Ya-Wei Wu

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  1. Yao-Jun Wu
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  2. Li-Xin Li
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  3. Ya-Wei Wu
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Correspondence to Yao-Jun Wu.

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Wu, YJ., Li, LX. & Wu, YW. The Performance of ST-Turbo TC Based on the Improved Log-MAP Algorithm. Wireless Pers Commun 62, 959–964 (2012). https://doi.org/10.1007/s11277-010-0103-8

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  • DOI: https://doi.org/10.1007/s11277-010-0103-8

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