Title :
Poisoned feedback: The impact of malicious users in closed-loop multiuser mimo systems
Author :
Mukherjee, Amitav ; Swindlehurst, A. Lee
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Univ. of California Irvine, Irvine, CA, USA
Abstract :
Accurate channel state information (CSI) at the transmitter is critical for maximizing spectral efficiency on the downlink of multi-antenna networks. In this work we analyze a novel form of physical layer attacks on such closed-loop wireless networks. Specifically, this paper considers the impact of deliberately inaccurate feedback by malicious users in a multiuser multicast system. Numerical results demonstrate the significant degradation in performance of closed-loop transmission schemes due to intentional feedback of false CSI by adversarial users.
Keywords :
MIMO communication; multi-access systems; multicast communication; telecommunication security; adversarial user; channel state information; closed loop multiuser MIMO systems; closed loop wireless networks; malicious user; multiantenna networks; multicast beamforming; physical layer attack; poisoned feedback; spectral efficiency; Array signal processing; Channel state information; Downlink; Feedback; Interference; MIMO; Physical layer; Receiving antennas; Transmitters; Wireless networks; Byzantine attack; Physical layer security; feedback; multicast beamforming; multiuser downlink;
Conference_Titel :
Acoustics Speech and Signal Processing (ICASSP), 2010 IEEE International Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
978-1-4244-4295-9
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2010.5496290
