Dynamic optimized cooperation in multi-source multi-relay wireless networks with random linear network coding

Benamira E., Merazka F., Kurt G. K.

ELECTRONICS LETTERS, vol.57, no.8, pp.347-350, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 8
  • Publication Date: 2021
  • Doi Number: 10.1049/ell2.12020
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Applied Science & Technology Source, Business Source Elite, Business Source Premier, Communication Abstracts, Computer & Applied Sciences, INSPEC, zbMATH, Directory of Open Access Journals
  • Page Numbers: pp.347-350
  • Keywords: Algebra, Codes, Monte Carlo methods, Radio links and equipment, Reliability
  • Istanbul Technical University Affiliated: Yes


The authors present a strategy that improves the reliability of data transmission from multiple sources towards a destination D via multiple relays over wireless channels. After the broadcast phase, the destination selects the best cooperative direct link sources with the highest instantaneous signal-to-noise ratio gamma, then generates and sends the random linear network coding coefficient matrix to the relays. After receiving the random linear network coding-coded symbols (packets) from the relays, D completes the reception and decoding of all source nodes packets. Monte Carlo simulations are conducted with Galois field (GF) (q) symbols (q = 2, 4 and 8) and the results are compared with the scenario of static cooperative direct links. An important decrease of symbol error rate (SER) is achieved. Furthermore, the efficiency of this approach is confirmed for the whole range of possible values of path loss exponent on direct links, that is, all types of environment between source nodes and destination D.