Title :
Bit error rate of a digital radio eavesdropper on computer CRT monitors
Author :
Dong, Shiwei ; Xu, Jiadong ; Guo, Chenjiang
Author_Institution :
Dept. of Electron. Eng., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
An eavesdropper on computer CRT (cathode ray tube) monitors can be used to intercept video information. Its anti-noise performance is analyzed in this paper. Baseband transmission models of digital signals are established according to the operating principle of the eavesdropper. The relationship between the eavesdropper´s bit error rate and some parameters, such as intercept distance, superposition times and noise power, is discussed under the circumstances of ISI and ISI-freedom. Good agreement is obtained between experimental results and theoretical analysis.
Keywords :
cathode-ray tube displays; computer displays; digital radio; error statistics; intersymbol interference; security of data; signal processing; software radio; ISI; anti-noise performance; baseband transmission models; bit error rate; cathode ray tube; computer CRT monitors; digital radio eavesdropper; intercept distance; noise power; superposition times; video information intercepting; Bit error rate; Cathode ray tubes; Computer displays; Current density; Digital communication; Electron beams; Error analysis; Performance analysis; Pixel; Receivers;
Conference_Titel :
Communications and Information Technology, 2004. ISCIT 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8593-4
DOI :
10.1109/ISCIT.2004.1413889
