nowadays, in the modern wars, radars have faced with many threats. therefore, low probability of interception (lpi) capability is considered as an important factor in military radars. on the other hand, research on the interception of their signals is started and so far several methods are presented for detection of these signals. by using of time-frequency techniques, we can estimate signal pa...

Underwater acoustic communication systems suffer from the channel impairments which results in time spreading of the transmitted signal. In underwater environment, multiple replicas of the transmitted signal are received at the receiver through different paths, which causes significant Inter-Symbol Interference (ISI). Decision Feedback Equalizers (DFE) was utilized to overcome this type of inte...