A Novel Code Assignment Scheme based on Learning Automata for Clustered Wireless Mobile Ad-hoc Networks
Amirhosein Fathinavid, Maryam Ansari, Elahe Ahmadpour Samani · 2013
In this paper, we have designed a code assignment algorithm for ad-hoc networks based on CDMA scheme. In this method, inter -cluster interference free communications have been organized. To do this assignment, proposed algorithm which we name CDMLA, uses learning automata concept. The proposed algorithm allocates interference free code to each cluster head with concept of code spatial reuse. This algorithm is performed based on clustering and a learning automaton is assigned to each cluster head. The learning automata residing in each cluster head allocates a code to its cluster head. We have implemented the system in network simulator GloMoSim. Also, we have rigorously evaluated the performance of our proposed solution by performing a variety of experiments through the extensive simulation experiments. The performance of proposed algorithm is measured, and the results are compared with CS-DCA, LACAA and Hybrid-DCA protocols in terms of the number of used codes, code spatial reuse, blocking rate, waiting time for packet transmission and throughput. Simulation results show that the proposed method outperforms the existing methods in terms of almost metrics of interest under the same conditions.