Hop-by-Hop Routing Strategy for Multihop Decode-and-Forward Cooperative Networks

Abstract— In this paper, focusing on multihop decode-andforward cooperative networks, a hop-by-hop routing strategy is designed to optimize the end-to-end outage performance when only knowledge about the mean channel state information (CSI) is available. In particular, by only utilizing the mean CSI at the current hop, a novel optimization metric is devised to select the best relay on a per-hop basis. The outage analysis illustrates the advantage of the proposed hop-by-hop routing strategy. In addition, a decentralized implementation scheme with minimal overhead is presented. Under realistic propagation conditions, including the effects of path loss and Rayleigh fading, the endto-end outage performance is evaluated. Simulation results show that, when only the mean CSI can be exploited, the proposed hop-by-hop routing strategy can provide a good tradeoff between performance and overhead.

• Type: Conference
• Year: 2008
• Where: WCNC
• Authors: Lu Zhang 0005, Leonard J. Cimini Jr.
• Keywords: Hop-by-hop Routing Strategy, Mean Csi, Outage Performance, WCNC 2008, Wireless Networks