| The main objectives of next-generation wireless networks are to accommodate the increasing user's demand and to achieve ubiquitous high data rate coverage. Wireless multi hop relaying is therefore among the envisioned solutions. Relays cost less than base stations, and they can extend coverage and improve detection in a cooperative manner. Orthogonal frequency division multiple access (OFDMA) as the prospective air interface. The synergy of multi hop relaying and OFDMA techniques present a set of opportunities but, render an unsuitable environment for static resource planning. Therefore, intelligent radio resource management (RRM) schemes are required to combat the interference and to operate the relays in a dynamic and opportunistic manner so that bandwidth is efficiently utilized. Consequently, a reliable and ubiquitous service is achieved regardless of users' locations and channel conditions. In this project we did simulation using Matlab Tool and a graph of the number of user's vs capacity of a channel is plotted, which shows that as the number of users increase, the throughput of the system becomes stable. |
