ABSTRACT
TCP/IP networks should deal with congestion efficiently because users require fast and reliable links. Congestion is more difficult to detect in wireless communications, as the network delays and the number of users change constantly. This paper presents the design and test in different environments of four different pole placement controllers. Each of them represents a unique way of dealing with congestion: the way in which delay is introduced in the design or if the design is continuous or digital influence heavily in the results. Simulations in realistic non-linear environments show that the pole placement controllers are a viable approach to reduce congestion in networks.
