Bit-to-Symbol Mapping Strategy for LDPC-Coded Turbo Equalizers Over High Order Modulations 


Vol. 35,  No. 5, pp. 432-438, May  2010


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  Abstract

In this paper we study the effect of bit-to-symbol mappings on the convergence behavior of turbo equalizers employing low-density parity-check (LDPC) codes over high order modulations. We analyze the effective SNR of the outputs from linear minimum mean-squared error (MMSE) equalizers and the convergence property of LDPC decoding for different symbol mappings. Numerical results show that the bit-reliability (BR) mapping provides better performance than random mapping in LDPC-coded turbo equalizers over high order modulations. We also verify the effect of symbol mappings through the noise threshold and error performance.

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  Cite this article

[IEEE Style]

M. Lee and K. Yang, "Bit-to-Symbol Mapping Strategy for LDPC-Coded Turbo Equalizers Over High Order Modulations," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 5, pp. 432-438, 2010. DOI: .

[ACM Style]

Myung-Kyu Lee and Kyeongcheol Yang. 2010. Bit-to-Symbol Mapping Strategy for LDPC-Coded Turbo Equalizers Over High Order Modulations. The Journal of Korean Institute of Communications and Information Sciences, 35, 5, (2010), 432-438. DOI: .

[KICS Style]

Myung-Kyu Lee and Kyeongcheol Yang, "Bit-to-Symbol Mapping Strategy for LDPC-Coded Turbo Equalizers Over High Order Modulations," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 5, pp. 432-438, 5. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880