3RD INTERNATIONAL CONGRESS ON TECHNOLOGY - ENGINEERING & SCIENCE - Kuala Lumpur - Malaysia (2017-02-09)

A Hybrid Nlms/rls Algorithm To Enhance The Beamforming Process Of Smart Antenna Systems
Adaptive beamforming algorithm is a signal processing technique used by smart antenna system to steer the main beam toward the desired signal direction and cancel the interfering signals of other directions. This paper proposes a hybrid non-blind beamforming algorithm that combines the Normalized Least Mean Square (NLMS) algorithm and the Recursive Least Square (RLS) algorithm to exploit the advantages of both algorithms and avoid their drawbacks. A comparative study between the proposed algorithm and other non-blind beamforming algorithms will be introduced to illustrate the points of strength of the proposed algorithm. It is promising that the hybrid NLMS/RLS algorithm solves many problems of the other non-blind algorithms. For further performance testing, the hybrid NLMS/RLS algorithm is applied to different types of patch array antennas with resonance frequency 10GHz.
Ashraf Khalaf, Abdel-Rahman El-Daly, Hesham Hamed