Title :
Jamming attacks against OFDM timing synchronization and signal acquisition
Author :
Pan, M.J.L. ; Clancy, T. Charles ; McGwier, Robert W.
Author_Institution :
Electr. & Comput. Eng., Virginia Tech, Blacksburg, VA, USA
fDate :
Oct. 29 2012-Nov. 1 2012
Abstract :
Orthogonal Frequency Division Multiplexing (OFDM) is used in many modern communications systems. Timing and frequency synchronization in an OFDM system are critical to performance and must be carried out early and often. Current synchronization methods, such as those developed by Schmidl and Cox [1], were not designed to be robust to adversarial signals. A series of attacks against the preamble synchronization stage have been developed and demonstrated to debilitate OFDM receivers. Multiple attacks against the symbol timing estimation stage are discussed, and some possible improvements to OFDM synchronization algorithms are suggested.
Keywords :
OFDM modulation; jamming; receivers; signal detection; synchronisation; telecommunication security; OFDM receivers; OFDM timing synchronization; current synchronization methods; frequency synchronization; jamming attacks; modern communications systems; orthogonal frequency division multiplexing; preamble synchronization stage; signal acquisition; symbol timing estimation stage; Jamming; OFDM; Receivers; Synchronization; Transmitters;
Conference_Titel :
MILITARY COMMUNICATIONS CONFERENCE, 2012 - MILCOM 2012
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-1729-0
DOI :
10.1109/MILCOM.2012.6415749