Missile defense presents a potentially challenging environment that requires use of advanced communications techniques to achieve reliable communications. The communications model applicable for missile defense has been specified by DTRA. The capability to accurately emulate the DTRA channel model is critical to evaluating potential future upgrades to the In Flight Interceptor Communication System (IFICS). In response to the MDA04-91 solicitation, ECC proposes to produce a software implementation of a Fading Channel Simulator (FCS) simulating the DTRA model channel. The software implementation will be fully verified, and a preliminary design for a hardware implementation for the FCS will be produced. The proposed FCS includes many advanced capabilities including the ability to support channel modeling for up to four-fold diversity systems