Yale Systems, Inc.
Physical layer techniques have come a long way and can achieve close to Shannon capacity for single point to point transmissions. It is apparent that, to further improve network capacity significantly, the authors have to resort to concurrent transmissions. Multiple concurrent transmission techniques (e.g., zero forcing, interference alignment and distributed MIMO) are proposed in which multiple senders jointly encode signals to multiple receivers so that interference is aligned or canceled and each receiver is able to decode its desired information. In this paper, they formulate the interference alignment and cancellation problem in multi-hop mesh networks.