Coordinated Transmission in Distributed Ad Hoc Peer-To-Peer (P2P) Communications
Wei Ni, H. Wang, Z. Li · 2009
The centralized transmission (Tx) coordination is presented for P2P networks to mitigate the strong near-far interference (NFI) by aligning the transmissions of nearby P2P pairs. With the concern of signaling overhead, all nodes measure and feedback the sum co-channel interference (CCI) exclusively to the central node. With the same principle, the more practical distributed Tx coordination is proposed, where every P2P pair exchanges the CCI measurements and coordinates the Tx order locally. Simulations illustrate that the distributed Tx coordination provides the similar performance to the heuristic centralized method and outperforms the prior art dramatically. In addition, the latency is quite low in the distributed coordination.