On broadcasting with cooperative diversity in multi-hop wireless networks

Abstract— Cooperative diversity facilitates spatio-temporal communications without requiring the deployment of physical antenna arrays. While physical layer studies on cooperative diversity have been extensive, higher layer protocols which translate the achievable reduction in the SNR per bit for a given target BER, into system wide performance enhancements are yet to mature. The challenge is that appropriate higher layer functions are needed in order to enable cooperative diversity at the physical layer. We focus on network-wide broadcasting with the use of cooperative diversity in ad hoc networks. We design a novel distributed network-wide broadcasting protocol that takes into account the physical layer dependencies that arise with cooperative diversity. We perform extensive simulations that show that our protocol can outperform the best of the noncooperative broadcasting protocols by: (a) achieving up to a threefold increase in network coverage and, (b) by decreasing the latency i...

• Type: Journal
• Year: 2007
• Where: JSAC
• Authors: Gentian Jakllari, Srikanth V. Krishnamurthy, Michalis Faloutsos, Prashant V. Krishnamurthy
• Keywords: Cooperative Diversity, JSAC 2007, Physical Layer, Physical Layer Studies