A Framework for Implementing Adaptive Antenna Technique in Ad Hoc Network for Multicast Environment

Mobile Ad-hoc NETwork (MANET) is a self configurable, infrastructure less, autonomous and self healing system of nodes communicating through wireless channels without any fixed backbone support. The omni-directional antennas transmit and receive the power in all directions, this leads to the high noise interference. These interference constraints reduce the signal quality of reception. The proposed model is a framework for implementing adaptive antenna technique in MANET. The proposed system focuses on adaptive antenna, which can place nulls in the direction of interference via adaptive updating of weights linked to each antenna element. They thus cancel out most of the co-channel interference resulting in better quality of reception. In this proposed technique a multi beam adaptive antenna have been used and a framework of a cross layer approach of topology control that communicate with the routing layer and MAC layer and meet the necessary QOS of various data streams. This approach is fully distributed. When the network is initialized the algorithm makes an initial connected topology and the routing algorithm uses this topology to discover paths for the current communications. The proposed method is implemented using Network Simulator-2. And the QOS parameters are compared with the existing method.