CTU: Capturing Throughput Dependencies in UWB Networks

—The inherent channel characteristics of impulse-based UWB networks affect the MAC layer performance significantly. Previous studies on evaluating MAC protocols are based on prolonged simulations, and do not account for the multiple-access interference that arises due to multipath delay spread. In this work, we develop CTU, an analytical framework that captures the performance of MAC protocols, while taking into account the underlying PHY layer effects. The key attributes that make CTU novel are: (a) It is modular and therefore flexible; it can be easily modified to provide a basis for characterizing and evaluating a wide range of MAC protocols designed for impulse-based UWB networks. The only requirements are that the MAC protocol under study be based on time-hopping, and the modulation scheme be pulse position modulation; these are common design decisions in most impulse based UWB networks. (b) It considers the channel characteristics in addition to MAC layer effects; in particu...

• Type: Conference
• Year: 2008
• Where: INFOCOM
• Authors: Ioannis Broustis, Aggelos Vlavianos, Prashant Krishnamurthy, Srikanth V. Krishnamurthy
• Keywords: Communications, INFOCOM 2008, MAC Layer Performance, MAC Protocol, UWB Networks