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In vehicular ad-hoc networks, status update messages are used to disseminate vehicle state information so that each vehicle can track movements of its neighbors. In this paper, we focus on the aggregated power level from this kind of active safety messages and its impact on DSRC channel quality. With macroscopic model and LWR (Lighthill-Whitham-Richards) PDE, we show how the probability distribution...
An ad hoc network is interference limited, the power control strategy plays an important role in the study of transmission capacity. In this paper, a well-known power control strategy, i.e., channel inversion, is studied. By comparing with no power control case, we found that using channel inversion increases the level of normalized interference in network, which makes the performance of network worse.
This paper proposes a new power control algorithm in multicell networks. It improves the capacity of the cellular network significantly by balancing the utilization of the radio resource and the resulting co-channel interference. In particular, we employ a leader-followers game model to jointly consider the benefits of the users and the network. A global price policy is adopted to optimize the capacity...
In this paper, we study distributed power control in an interference network. In particular, distributed power control mechanisms are devised by exploiting a one-shot non-cooperative game based on a suitably chosen utility function. The utility is a function of quality of service (QoS) objectives defined in terms of fading-induced outage probabilities. Equilibrium analysis of the resulting power control...
A combined base station association and power control problem is studied for the uplink of multichannel multicell cellular networks, in which each channel is used by exactly one cell (i.e., base station). A distributed association and power update algorithm is proposed and shown to converge to a Nash equilibrium of a noncooperative game. We consider network models with discrete mobiles (yielding an...
In this paper, the application of game theory to the purpose of obtaining energy-efficient distributed power control algorithms in interference-limited wireless networks is considered. Utility for users has been defined as a function of rate and power that encourages energy-efficient behavior, and several games have been constructed based on this utility function. Nash equilibria in wireless interference...
Cognitive radio networks enable secondary users to utilize spare bandwidth of primary users by limiting their interference. Moving beyond the traditional listen-before-talk paradigm, we propose a cognitive access methodology that exploits the feedback channel in two-way primary communication links for better spectrum utility and protection of primary users against secondary interference. We let secondary...
In this paper we consider power allocation policies for 2-user Gaussian interference channels (IFC) with ergodic fading, perfectly known at all terminals. Based on recently found outer bounds on the capacity region of unfaded IFCs, we determine the power allocation that maximizes a sum-rate outer bound. With this power allocation both users are simultaneously active when the power of the interfering...
We study a class of population game frameworks called stable games, introduced by Hofbauer and Sandholm (2007). We give several examples of applications of stable population games in the context of wireless networks including resource allocation, impact of malicious users in cognitive radio networks and power control. We model and analyze a base station assignment problem and interference control...
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