Adaptive beam formation for smart antenna for mobile communication network using new hybrid algorithms

Smart antenna is one of the key technologies in wireless mobile communication network. Smart antenna generates principal beam towards desired user and null toward undesired interferer. In addition to adaptive beam generation, one main task of this system is to generate beam with lower side lobe level (SLL). This paper describes the beam generation using least mean square algorithm (LMS) and constraint stability least mean square algorithm (CSLMS) along with array synthesis method Tchebyscheff distribution. These methods are new hybrid methods for adaptive beam generation. The performances of these two methods are compared with respect to beam generation and side lobe reduction.