Implementation and Simulation of 4g Co-Operative Relay Network

Abstract

The Co-operative Communication (CC) is a technology that allows multiple nodes to simultaneously transmit the same data. It can save power and extend transmission coverage. However, prior research work on topology control considers CC only in the aspect of energy saving, not that of coverage extension. Recently, there has been increasing interest in integrating multi-hop relaying functionalities into MANET. Multi-hop wireless networks can potentially enhance coverage, data rates. Throughput and packet delivery ratio are used as performance metrics for contrast. We are comparing the performance when the size of the packet changes, when the time interval between the packets are changed, when mobility of nodes changes. Wireless network are consider that is WiMAX (Worldwide Interoperability for Microwave Access) which is a wireless communication standards based on the IEEE 802.16, it provides multiple physical layer (PHY) and media access control (MAC) options. Till now wi-fi network is used but it operates in the range of 20 meters with the speed 50 Mbps whereas, WiMAX operates upto 50 kilometers with the speed of 70 Mbps. The protocol NS2.3.1 is used and TCL (tool command language) used to generates two files network animator (.nam) and trace file (.tr). Network animator based on animation tool for viewing network simulation traces and real world packet traces, and trace file log every packet, every event that occurred in the simulation and are used for analysis.