Date Added: Aug 2010
Over the last five years both the academia and the industry have produced evidence that wireless multi-hopping suffers from low performance. Even putting real-world constraints aside and assuming deployment of optimal schedulers and rate controllers, the fact of the matter is that wireless multi-hop networks are severely constrained by interference. Advances in antenna technologies make it possible to create efficient multi-hopping architectures utilizing multiple antennas per node. Specifically, a Multi-user MIMO system could offer a significant boost in performance by utilizing spatial multiplexing, which allows nodes to send and receive multiple packets concurrently, and by reducing interference via beamforming and interference cancellation techniques.