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Low Complexity Soft Decision Technique for Gray Mapping Modulation

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Abstract

High order Gray mapping modulation has been widely used in wireless communications, but the traditional soft decision technique via the log-sum approximation is of high computational complexity. In this paper, a low complexity soft decision technique is proposed for popular Gray mapping modulation schemes, including M-PAM, M-PSK and square M-QAM. Compared with the traditional log-sum approximation, the proposed technique can effectively reduce the computational complexity without any performance degradation.

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Authors and Affiliations

  1. National Key Lab of Communications, University of Electronic Science and Technology of China, Chengdu, People’s Republic of China

    Dengsheng Lin, Yue Xiao & Shaoqian Li

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  1. Dengsheng Lin
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  2. Yue Xiao
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  3. Shaoqian Li
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Correspondence to Dengsheng Lin.

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Lin, D., Xiao, Y. & Li, S. Low Complexity Soft Decision Technique for Gray Mapping Modulation. Wireless Pers Commun 52, 383–392 (2010). https://doi.org/10.1007/s11277-008-9654-3

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  • DOI: https://doi.org/10.1007/s11277-008-9654-3

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