Summary
International Symposium on Antennas and Propagation
2009
Session Number:3E3
Session:
Number:3E3-4
Improvement of Tolerance for Eavesdropping in Wireless Key Agreement Scheme Using ESPAR Antenna Based on Interference Transmission
Masahiro ONISHI, Takayasu KITANO, Hisato IWAI, Hideichi SASAOKA,
pp.1107-1110
Publication Date:2009/10/21
Online ISSN:2188-5079
Summary:
In this paper, we propose a new countermeasure to reduce the high correlation of the RSSI sequences. A secret communication system equipped with multiple auxiliary antennas transmitting interference signals has been proposed [5]. We apply the principle of the system to the key agreement. In the proposed key agreement scheme, additional interference signals are simultaneously transmitted from the auxiliary antennas at legitimate AP (Access Point). The transmission from the multiple antennas is controlled to cancel the interference at the location of the legitimate UT (User Terminal) by weighting the transmission signals. The interference transmission decreases the correlation of the RSSI sequences between the legitimate stations and the eavesdropper (TP : Tapping Point). In this paper, the configuration of the proposed system is presented. Also the performance of the proposed scheme is quantitatively evaluated through computer simulations.