P.V. Luferchik1, А.V. Luferchik2, R.G. Galeev3, Е.V. Bogatyrev4

1,2 JSC SPE «Radiosvyaz» (Krasnoyarsk, Russia)

3 Siberian State University of Science and Technology named after Academician M.F. Reshetnev (Krasnoyarsk, Russia)

4 Siberian Federal University (Krasnoyarsk, Russia)

1–4 ccn@krtz.su

Until recently, convolutional codes were most often used in modems of satellite communication systems as noise-resistant codes, including in combination with Reed-Solomon error correction. Relatively recently, block turbocodes-products (TPC) and convolutional turbocodes (TCC), as well as codes with a low density of parity check codes (LDPC), have been used. For this standard, the use of powerful LDPC operating within 1 dB of the Shannon limit was adopted. The article examines the analysis of algorithms for decoding noise-resistant codes.

The purpose of the work is to analyze the methods of noise-resistant coding in satellite communication networks of turbo codes, LDPC codes and cascade coding of BCH+LDPC with a wide range of speeds of noise-resistant codes.

Various performance evaluation results are presented for a wide range of DVB-S2 and DVB-SH parameters, such as LDPC codeword size, encoding rate, modulation format and including several decoding algorithms.

The prospects of using turbo codes and LDPC codes in modems of satellite communication networks, as well as cascade coding of BCH+LDPC with a wide range of speeds of noise-resistant codes are shown. Compared to the previously used codes, the new codes provide an energy gain of up to 4 dB and allow you to get very close to the Shannon boundary (a loss of only 0,6…0,8 dB).

The prospects of application in modems of satellite communication stations of the new generation DVB-S2.

Luferchik P.V., Luferchik А.V., Galeev R.G., Bogatyrev Е.V. Comparative analysis of types of noise-resistant coding in modems of new generation satellite communication stations. Achievements of modern radioelectronics. 2023. V. 77. № 10. P. 41–46. DOI: https://doi.org/10.18127/j20700784-202310-04 [in Russian]

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