We study the phenomenon of evolution of cooperation in a society of self-interested agents using repeated games in graphs. A repeated game in a graph is a multiple round game, where, in each round, an agent gains payoff by playing a game with its neighbors and updates its action (state) by using the actions and/or payoffs of its neighbors. The interaction model between the agents is a two-playe...

We investigate the issue of distributed receiver cooperation in a multiple-relay network with memoryless independent fading channels, where the channel state information can’t be obtained. The received signals at distributed receiving nodes are first compressed or quantized before being sent to the decoder via rate-limited cooperation channels for joint processing. We focus on the low SNR regim...

Multicell cooperation has been identified as one of the underlying principles for future wireless communication systems. This paper studies the benefits of multicell cooperation in broadcast TV network from an information theoretical perspective. We define outage capacity as the figure of merit and derive the broadcast coverage area to evaluate such system. Specifically, we calculate the broadc...

In this paper we study learning and cooperation in repeated prisoners’ dilemmas experiments. We compare interaction neighbourhoods of different size and structure, we observe choices under different information conditions, and we estimate parameters of a learning model. We find that naive imitation, although a driving force in many models of spatial evolution, may be negligible in the experimen...