A novel single tone jamming elimination scheme for multi-carrier spread spectrum system

A novel single tone jamming elimination scheme of multi carrier spread spectrum system is proposed, which is based on Discrete Fourier Transform (DFT) domain processing. The key technology of this scheme is jamming parameter′s accurate estimation and jamming reconstruction. Compared with the “threshold exciser” scheme, the proposed scheme can eliminate more jamming energy on the whole frequency band, and minimize the loss of useful signal energy. Study and simulation show that the proposed scheme is much better than the “threshold exciser” scheme. Especially, it can still work very well under the condition of high power jamming even if the “threshold exciser” scheme is invalid.