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Capacity of MIMO MANETs with cooperation


We introduce a new communication scheme for mobile wireless ad hoc networks (MANETs) utilizing the concept of cooperative many-to-many communication, called opportunistic cooperation, as opposed to the traditional approach that emphasizes on point-to-point communication. In the new paradigm, the adjacent nodes no longer interfere with each other but rather cooperate. Our analysis is for MANETs when all the nodes in the network are endowed with M antennas. We derive two upper bounds on the ergodic capacity per node in the network. These upper bounds are compared with Monte-Carlo simulation of point-to-point and many-to-many communications. We show that one of our upper bounds is a tight bound. Also, we demonstrate that the capacity of MANETs with multiple antennas is improved significantly using cooperation as compared to non-cooperative schemes, i.e., point-to-point communication.


de Moraes, R. M.; Sadjadpour, H.; Garcia-Luna-Aceves, J. J. Capacity of MIMO MANETs with cooperation. Proceedings of the 2006 International Conference on Communications and Mobile Computing; 2006 July 3-6; Vancouver, BC, Canada.