A novel MAC technique for ad-hoc CDMA networks

In the recent years the high-speed data networking in a wireless infrastructure has became one of the most interesting topic both in industrial and research field. Among different standards and data rates one of the most important challenge in the future is established by the ad-hoc networks. They differs from the classical wireless local area networks (WLANs) for the absence of a coordinator device. In such networks the data exchange is autonomously routed by the devices that assume also the function of network nodes. One of the most interesting topics in wireless ad-hoc networks is the medium access control (MAC) protocol because each node have to sent packets generated by itself and route packets from other nodes; moreover, due to the absence of a coordination device, each node have to perform some algorithm in order to know which are the neighbor nodes. In this paper a MAC technique for code division multiple access (CDMA) networks is proposed, taking into account the adaptation of the spreading code in order to minimize the total network congestion.