This appears to be an ongoing project, aimed at creating a new simulator for wireless sensor networks networks. No downloads as of Oct 1 2005, although a Doxygen docu is online. See their web site at http://csc.lsu.edu/sensor_web/.
From the Abstract of the paper on the web site:
"[...] We report results obtained from a new simulator for wireless sensor networks networks that is based on the discrete event simulation framework called OMNeT++. Work is underway to develop a simulation platform that allows developers and researchers to investigate topological, phenomenological, networking, robustness and scaling issues related to wireless sensor networks. As a first step, we have developed simulations for the 802.11 MAC and the well-known sensor network protocol called Directed Diffusion. We demonstrate the performance of our simulator by comparing its performance to that of the well-known simulator ns2. Our results indicate that our simulator executes at least an order of magnitude faster than NS-2 and makes more efficient use of the available memory. The ease of modifying the sensor network and scalability, which is defined as the number of nodes that can be simulated, are two distinguishing features of our simulator."