DARPA is seeking to develop the system components for enabling disconnected platforms to collaboratively null interference in order to communicate from one collaboration group to another. Our focus is on achieving the best performance within the constraints of practical radio limitations, such as the maximum transmit data rate, the number of simultaneous transmissions a radio can receive, and the fact that interference may prevent all communication between the two groups in the absence of cancellation. Specifically, we are proposing two innovations to achieve DARPA's objective. The first is the advanced signal processing necessary to provide deep interference cancellation using collaborative radios. The second is an efficient scalable protocol for integrating this signal processing with diversity for high performance in a fading environment.
