LDPC Decoding Algorithm for Multi-level Modulation Scheme 


Vol. 30,  No. 6, pp. 434-441, Jun.  2005


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  Abstract

For LDPC decoding, received symbols are splitted bit by bit based using the received in-phase and quadrature components. The method of bit-splitting is affected on decoding performance because its method depend on distance over symbol constellation. Therefore this paper propose the bit split method using the sector information with sacrifice a little performance loss compared to Euclidean distance method. Futhermore DVB-S2 specification supports BC(Backward Compactible) mode which using the hierarchical modulation method, this paper also analyze the decoding performance according to deviation angle of 8PSK constellation for various LDPC coding rates.

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  Cite this article

[IEEE Style]

I. Lee, J. Jung, D. Choi, E. Choi, D. Chang, D. Oh, "LDPC Decoding Algorithm for Multi-level Modulation Scheme," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 6, pp. 434-441, 2005. DOI: .

[ACM Style]

In-Ki Lee, Ji-Won Jung, Duk-Gun Choi, Ean-A Choi, Dae-Ig Chang, and Duk-Gil Oh. 2005. LDPC Decoding Algorithm for Multi-level Modulation Scheme. The Journal of Korean Institute of Communications and Information Sciences, 30, 6, (2005), 434-441. DOI: .

[KICS Style]

In-Ki Lee, Ji-Won Jung, Duk-Gun Choi, Ean-A Choi, Dae-Ig Chang, Duk-Gil Oh, "LDPC Decoding Algorithm for Multi-level Modulation Scheme," The Journal of Korean Institute of Communications and Information Sciences, vol. 30, no. 6, pp. 434-441, 6. 2005.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880