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  4. 2024
  5. VOL 46, NO 1 (2024)
  6. pp. 78-89

Adaptive combined channel network coding for cognitive radio networks with cooperative relay

А.M. Kapiton 1, doct. of ped. sciences; R.V. Baranenko 2, cand. of techn. science;
H.V. Sokol 3, cand. of techn. science; M.Yu. Okhrymenko 3, senior lecturer
1 National University «Yuri Kondratyuk Poltava Polytechnic»,
  Ukraine, 36011, Poltava, Pershotravnevy prospect, 24
  tel. +38 (066) 9440001, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
2 Uman National University of Horticulture,
  Ukraine, 20305, Uman, Institute Street, 1
  tel. +38 (066) 2106486, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.;
3 National Technical University «Kharkiv Politechnic Institute»,
  Ukraine, 61002, Kharkiv, Kyrpychova str., 2
  tel. +38 (097) 9991890, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.,
  tel. +38 (067) 1215150, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Èlektron. model. 2024, 46(1):78-89

https://doi.org/10.15407/emodel.46.01.078

ABSTRACT

Cognitive radio is one of the new technologies for 4G/5G applications, so cooperative relay communication and network coding are considered as certain methods to help improve their respective applications. A primary broadcast system for multimedia video streaming applications that broad­casts data to primary users and an auxiliary cooperative relay secondary cognitive radio system are considered. The secondary cooperative overlay system can use multiple error control coding methods for point-to-point data retransmission, such as channel coding, network coding, and combi­ned coding methods to improve system performance under variable link conditions. A new technique of adaptive coding of AC2NC combined channel network for data retransmission is proposed. The new AC2NC first analyzes the channel feedback information and then selects the best retransmission coding technique based on the target bandwidth or trans­mission time optimization. This is instead of using a single static channel or a network coding technique with dynamic channel conditions. The proposed AC2NC improves system throughput, reduces retransmission time, and provides more spectrum access opportunities for the secondary sys­tem's own data transmissions. AC2NC's relative throughput and time saving capabilities for cognitive radio users have been shown to exceed ninety percent, under certain channel conditions, compared to some static coding methods.

KEYWORDS

adaptive coding, AC2NC, cognitive radio, network coding, channel coding.

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