Elements of information theory
Elements of information theory
CDMA: principles of spread spectrum communication
CDMA: principles of spread spectrum communication
Matrix analysis and applied linear algebra
Matrix analysis and applied linear algebra
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Secrecy capacities for multiple terminals
IEEE Transactions on Information Theory
Secrecy Capacities for Multiterminal Channel Models
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
On the Secrecy Capacity of Fading Channels
IEEE Transactions on Information Theory
Geolocation in ad hoc networks using DS-CDMA and generalized successive interference cancellation
IEEE Journal on Selected Areas in Communications
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We study the optimum location of an eavesdropper from a secrecy capacity perspective in multiterminal networks with power control. We determine the logical location of an eavesdropper (represented by the channel gain from all the transmitters) which 1) results in zero secrecy capacity for maximum number of users in the network and 2) results in zero secrecy capacity for the bottle-neck links. We then analyze the asymptotic secrecy capacity of the system and the asymptotic behavior of the optimum logical location of the eavesdropper. Results indicate that power control can make eavesdropping more difficult as it results in infeasible locations for the eavesdropper. Power control is also shown to provide scenarios which can result in positive asymptotic secrecy capacity for all the users.