SIGNAL PROCESSING IN MANET SMART ANTENNAS

Each layer of the Mobile Adhoc Network protocol stack has subject to some kind of issues, Majorly the lower three layers are facing the major challenges in packet transmission without falls on antenna usage, Hidden and Exposed nodes issues and routing strategy. Several research works was carried out individually addressing the layers to solve the problem, but still research exists on these three layers. This article considering the three layers to give better signal processing systems in MANET antennas. The proposed work consists of combines base three layers together in to single layer named as Antenna Beams Direction Based Routing Protocol which used the smart antenna to select the beam for the transmission with the support of hidden and exposed nodes table, finally this work provides the better packet transmission and proved the best result. The proposed work was simulated with the support of NS and the result compared with the Omni directional antenna with the parameter of SNR, Radiation Intensity, Directivity, was compared and the results proved that proposed work done the best in 20 % to 30 % performance in comparing with the existing protocol stack.