Paper Info
Title
Multiuser Diversity for Secrecy Communications Using Opportunistic Jammer Selection: Secure DoF and Jammer Scaling Law
Abstract
In this paper, we propose opportunistic jammer selection in a wireless security system for increasing the secure degrees of freedom (DoF) between a transmitter and a legitimate receiver (say, Alice and Bob). There is a jammer group consisting of $S$ jammers among which Bob selects $K$ jammers. The selected jammers transmit independent and identically distributed Gaussian signals to hinder the eavesdropper (Eve). Since the channels of Bob and Eve are independent, we can select the jammers whose jamming channels are aligned at Bob, but not at Eve. As a result, Eve cannot obtain any DoF unless it has more than $KN_{j}$ receive antennas, where $N_{j}$ is the number of each jammer's transmit antenna, and hence $KN_{j}$ can be regarded as defensible dimensions against Eve. For the jamming signal alignment at Bob, we propose two opportunistic jammer selection schemes and find the scaling law of the required number of jammers for target secure DoF by a geometrical interpretation of the received signals.
Year
DOI
Venue
2013
10.1109/TSP.2013.2293979
IEEE Transactions on Signal Processing
Keywords
DocType
Volume
secure dof,diversity reception,radio transmitters,transmitting antennas,transmitter,eavesdropper,receiving antennas,receiver,secure degrees of freedom,geometrical interpretation,telecommunication channels,multiuser diversity,transmit antenna,opportunistic jammer selection,distributed gaussian signals,receive antennas,radio receivers,telecommunication security,jammer scaling law,jamming,jamming channels,wireless security system,physical layer security,secrecy communications
Journal
62
Issue
ISSN
Citations 
4
1053-587X
22
PageRank 
References 
Authors
0.73
22
2
Name
Order
Citations
PageRank
Jung Hoon Lee126329.59
Wan Choi228025.77