Coordinated anti-collision transmission with parity grouping for multi-hop underwater acoustic cooperative networks

摘要

Due to the low speed of underwater acoustic propagation and the adverse energy supply of underwater facility, it is a challenging task to reduce the end-to-end delay and the system energy consumption. In this paper, an improved scheme is proposed based on multi-hop coordinated transmission for underwater acoustic cooperative networks. The data packets are divided into parity groups and then transferred, where the odd-numbered node transfers the odd-numbered packet and the even-numbered node transfers the even-numbered packet accordingly. Arbitrary node can be a cooperative relay for the adjacent two nodes. In the meanwhile, adopting a proper transfer power, arbitrary two nodes separated by four nodes can deliver data packets to the next node without collision. The simulation results show that the proposed scheme can effectively reduce the average end-to-end delay and energy consumption with the acceptable outage probability.