Resource Allocation for Parallel Gaussian MIMO Wire-tap Channels

Wire-tap channels are able to provide perfect secrecy when a receiver exhibits a better channel than its wire-tapping opponent. In this letter, we extend the perfect secrecy principle to parallel Gaussian multiple input multiple output (MIMO) wire-tap channels with independent sub-channels. Assuming...

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Bibliographic Details
Published in:IEEE communications letters 2010-12, Vol.14 (12), p.1092-1094
Main Authors: Le Nir, Vincent, Scheers, Bart
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Channels
Derivation
Equations
Exact sciences and technology
Gain
Gaussian
Mathematical analysis
Maximization
MIMO
MIMO systems
Minimization
Optimization
optimization methods
Receivers
Resource allocation
Resource management
Secret
Simulation
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
wire-tap channel
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Summary:Wire-tap channels are able to provide perfect secrecy when a receiver exhibits a better channel than its wire-tapping opponent. In this letter, we extend the perfect secrecy principle to parallel Gaussian multiple input multiple output (MIMO) wire-tap channels with independent sub-channels. Assuming N r ≥ N t and N e ≥ N t , mathematical derivations show that a sub-optimal solution can be given in closed-form considering either secrecy rate maximization subject to a total power constraint or power minimization subject to a secrecy rate constraint. Although sub-optimal for MIMO systems, simulation results show that the proposed algorithm allows to reach higher secrecy rates with substantial gains in power consumption compared to the single input single output (SISO) system.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2010.102810.101592