TECHNIQUES FOR JAMMER SUPPRESSION IN DS/SS COMMUNICATIONS
Yimin Zhangt, Alan R. Lindse, Moeness G. Amint · 2002
In this paper; we propose a new nonstationary jammer sup pression technique for DS/SS communications. This tech nique is based on combind opemtions of bilinear signal synthesis and projections. The time-frequency distributions (TFDs) is used to define the jammer time-frequency (t-fJ signature. Multi-sensor army at the receiver allows both the spatial and tempoml signatures of the signal arrivals to be utilized. To estimate the waveform of a jammer, a mask is constructed and applied such that the masked t-f region cap tures the jammer ene rgy, but leaves out most of the DS/SS signals. The jammer signals are then synthesized from the masked TFDs that can be removed from the received signal by orthogonal projection.