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Performance analysis of different architectures and TCP congestion-avoidance algorithms using WMN-GA simulation system Shinko, Ilir Kolici, Vladi Barolli, Admir Oda, Tetsuya Barolli, Leonard Xhafa Xhafa, Fatos Universitat Politècnica de Catalunya. Departament de Ciències de la Computació Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors Àrees temàtiques de la UPC::Informàtica Wireless communication systems Computer network protocols Computer algorithms Genetic algorithms Wireless Mesh Networks NS-3 Network architecture OLSR Multiple flows TCP congestion-avoidance algorithm SGC NCMC Client distributions Comunicació sense fil, Sistemes de Protocols de xarxes d'ordinadors Algorismes genètics In this paper, we evaluate the performance of two Wireless Mesh Networks (WMNs) architectures considering throughput, delay, jitter and fairness index metrics. For simulations, we used ns-3, Distributed Coordination Function (DCF) and Optimized Link State Routing (OLSR). We compare the performance of WMN for different Transmission Control Protocol (TCP): Tahoe, Reno and NewReno considering normal and uniform distributions of mesh clients by sending multiple Constant Bit Rate (CBR) flows in the network. The simulation results show that for normal and uniform distributions and both WMN architectures, the PDR values are almost the same. For Hybrid WMN, the throughput of TCP NewReno is good, but for I/B WMN, the throughput of TCP Tahoe is higher than other algorithms. For normal distribution, the delay and jitter of I/B WMN are lower compared with Hybrid WMN, while for uniform distribution, the delay and jitter of TCP NewReno are a little bit lower compared with other algorithms. The fairness index of normal distribution is higher than uniform distribution. Peer Reviewed Postprint (author's final draft) 2017-04-12 Article Shinko, I., Kolici, V., Barolli, A., Oda, T., Barolli, L., Xhafa, F. Performance analysis of different architectures and TCP congestion-avoidance algorithms using WMN-GA simulation system. "Journal of high speed networks", 12 Abril 2017, vol. 23, núm. 2, p. 163-173. 0926-6801 https://hdl.handle.net/2117/104991 10.3233/JHS-170563 eng http://content.iospress.com/articles/journal-of-high-speed-networks/jhs563 Open Access 11 p. application/pdf