The research of Q-ary LDPC codes in the navigation system
- DOI
- 10.2991/icmit-16.2016.27How to use a DOI?
- Keywords
- Navigation system; Q-ary; LDPC; EMS; maximum information entropy
- Abstract
In navigation system, due to the long distance between earth and satellites, the external environment noise may affect the service quality of information transmission system. To improve the capacity of anti-jam satellite communications, in this paper, an efficient construction algorithm for Q-ary LDPC code based on maximum information entropy is put forward, which brings extra gain to satellite communications system. The algorithm transforms the LDPC code check matrix H of the PEG method. By exchanging the "1" in the matrix with the generated element groups, the non-binary LDPC code H matrix is achieved. Simulation results demonstrate that the proposed algorithm achieves about 0.2dB performance improvement compared with the random replacement method. Moreover, compared with the non-binary LDPC codes based on maximum information entropy exploited in GPS LDPC codes with the same code length and code rate, our proposed algorithm yields a better performance than that in GPS application scenarios.
- Copyright
- © 2016, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xu Yi AU - Daoxing Guo AU - Wei You PY - 2016/04 DA - 2016/04 TI - The research of Q-ary LDPC codes in the navigation system BT - Proceedings of the 2016 3rd International Conference on Mechatronics and Information Technology PB - Atlantis Press SP - 141 EP - 145 SN - 2352-538X UR - https://doi.org/10.2991/icmit-16.2016.27 DO - 10.2991/icmit-16.2016.27 ID - Yi2016/04 ER -