Structural adaptation of the turbo code coder and decoder for generating the transmission repeat request under conditions of uncertainty
- Авторлар: Zaitsev S.1, Kazymyr V.1
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Мекемелер:
- Chernihiv National University of Technology
- Шығарылым: Том 60, № 1 (2017)
- Беттер: 18-27
- Бөлім: Article
- URL: https://journals.rcsi.science/0735-2727/article/view/177014
- DOI: https://doi.org/10.3103/S0735272717010034
- ID: 177014
Дәйексөз келтіру
Аннотация
The paper deals with the issue of enhancing the performance efficiency of wireless networks built by using the with automatic repeat request scheme for retransmission. The proposed method is based on adaptive change of polynomials of recursive systematic convolutional codes forming a part of turbo codes and aimed at enhancing their correcting properties at the expense of increasing the code limitation at each data block retransmission for the set coding rate. In this case, the decoding algorithm of turbo codes is modified in respect of using the introduced additional a priori information during the calculation of logarithmic ratios of likelihood functions or log-likelihood ratios (LLR) for each component decoder obtained during the earlier repeat requests for retransmission. The results of simulation modeling showed that the application of this technique made it possible to obtain the energy gain in coding and enhance the data transmission accuracy as compared to the fourth generation mobile communication system, such as 4G LTE-Advanced.
Авторлар туралы
S. Zaitsev
Chernihiv National University of Technology
Email: vvkazymyr@gmail.com
Украина, Chernihiv
V. Kazymyr
Chernihiv National University of Technology
Хат алмасуға жауапты Автор.
Email: vvkazymyr@gmail.com
Украина, Chernihiv