Ray-tracing propagation prediction for wireless Mesh Networks (WMNs)

Nowadays, a lot of research efforts and technical papers are done on Ad-Hoc networks and Wireless Local Area Networks (WLAN). Recently, however wireless mesh networking is attracting significant interest from academia, industry, and standard organizations because it is offer several favorable characteristics such as dynamic self-organization, easy maintenance and reliable services. A network with several transmitters and receivers that communicate to each other will form a mesh network topology. Once the transmitter launches a ray, it will be reflected, refracted or diffracted to any kind of surfaces such as the concrete wall. That process will decrease the received signal strength at the receiver. So, ray-tracing technique can be used to analyze the network performance. It is a method that used to determine the ray paths that emanate from the transmitter (Tx) and arrive at the receiver (Rx), and also an efficient approach in determining the propagation issues in wireless environment. So, this paper will be focused on Ray-Tracing techniques and WMNs theories.