REAL TIME IMPLEMANTATION OF LMS BEAMFORMER FOR cdma2000 3G SYSTEM USING TI TMS320C6701 DSP

Digital Signal Processor (DSP) is an emerging technology that offers great opportunities for the development of future wireless communications systems. In this paper, we demonstrate an implementation of real time adaptive beamforming for cdma2000 reverse link using TI C6701 DSP. We consider that the DSP executes least-mean-square (LMS) algorithm for the beamformer weight vector computation. The results show that the system can handle computation of optimum weight vector within reasonable time for 3G applications. The computed weight vector is observed to steer the main beam of the antenna array towards the desired signal direction. Complexity and execution time of the algorithm increase with the number of antenna elements.