ADAPTIVE BEAMFORMING IN SMART ANTENNA USINGTCHEBYSCHEFF DISTRIBUTION AND VARIANTS OF LEAST MEAN SQUARE ALGORITHM

Abstract

Tchebyscheff distribution is used for adaptive beam formation for smart antenna combined with different variants of least mean square (LMS) algorithm. Performances for accuracies of generated main beam direction and null direction and also side lobe level (SLL) are obtained using these hybrid algorithms. Tchebyscheff distribution with LMS (TDLMS), Tchebyscheff distribution with normalised LMS (TDNLMS) and Tchebyscheff distribution with sign LMS (TDSLMS) are used for adaptive beam generation and results are compared. Results show that using these hybrid algorithms low side lobe level can be obtained.

Keywords

• Adaptive beam
• Tchebyscheff distribution
• Variants of LMS algorithm
• Side lobe level