Smart Antenna Used in HF Software Radio Communication System

In order to control antenna by using software radio technique and make it have some'intelligence',we have studied the smart antenna technique based on software radio.Firstly,the smart antenna has been realized by using high speed DSP and software algorithm in the HF software radio communication system.Then,a comparison and simulation experiment for the jamming immunity of the smart antenna and popular antenna has been made.The results show that the smart antenna can efficiently strengthen useful signal,decrease interference and form the optimum directivity diagram.