A power control MAC protocol for ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
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Proceedings of the 9th annual international conference on Mobile computing and networking
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Proceedings of the 9th annual international conference on Mobile computing and networking
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Proceedings of the 2005 conference on Applications, technologies, architectures, and protocols for computer communications
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Proceedings of the 11th annual international conference on Mobile computing and networking
Comparison of multi-channel MAC protocols
MSWiM '05 Proceedings of the 8th ACM international symposium on Modeling, analysis and simulation of wireless and mobile systems
Fundamentals of wireless communication
Fundamentals of wireless communication
The medium time metric: high throughput route selection in multi-rate ad hoc wireless networks
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Proceedings of the 12th annual international conference on Mobile computing and networking
High transmission power increases the capacity of ad hoc wireless networks
IEEE Transactions on Wireless Communications
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IEEE Transactions on Information Theory
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IEEE Journal on Selected Areas in Communications
Throughput and energy efficiency in wireless ad hoc networks with Gaussian channels
IEEE/ACM Transactions on Networking (TON)
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Recent works show conflicting results: network capacity may increase or decrease with higher transmission power under different scenarios. In this work, we want to understand this paradox. Specifically, we address the following questions: (1)Theoretically, should we increase or decrease transmission power to maximize network capacity? (2) Theoretically, how much network capacity gain can we achieve by power control? (3) Under realistic situations, how do power control, link scheduling and routing interact with each other? Under which scenarios can we expect a large capacity gain by using higher transmission power? To answer these questions, firstly, we prove that the optimal network capacity is a non-decreasing function of transmission power. Secondly, we prove that the optimal network capacity can be increased unlimitedly by higher transmission power in some network configurations. However, when nodes are distributed uniformly, the gain of optimal network capacity by higher transmission power is upper-bounded by a positive constant. Thirdly, we discuss why network capacity may increase or decrease with higher transmission power under different scenarios using carrier sensing and the minimum hop-count routing. Extensive simulations verify our analysis.