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Performance of a Cooperative Relay-Based Auto-Rate MAC Protocol for Wireless Ad Hoc Networks

Lookup NU author(s): Tao Guo, Emeritus Professor Rolando Carrasco, Dr Wai Lok Woo



A Cooperative communication is becoming a promising technology for wireless networks by exploiting multipath fading instead of mitigating its impact. To integrate cooperative diversity into practical systems, efficient protocols are needed across the entire protocol stack. This paper presents a Cooperative Relay-Based Auto-Rate MAC protocol (CRBAR) to enhance the multi-rate capability along a long link. By leveraging the broadcast nature of the wireless medium and spatial diversity, a low-rate hop can be replaced by two high-rate hops via adaptive MAC-layer cooperation. To adapt to dynamical channel variation and network topology, the relay candidates adaptively select themselves as the relay nodes and determine the relay scheme and transmission rates based on the instantaneous channel measurements. System-level simulation study shows that CRBAR significantly outperforms traditional rate adaptation schemes in realistic scenarios.

Publication metadata

Author(s): Guo T, Carrasco R, Woo WL

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: IEEE 67TH Vehicular Technology Conference - VTC Spring 2008

Year of Conference: 2008

Pages: 11-15

Date deposited: 16/03/2010

ISSN: 1550-2252

Publisher: IEEE


DOI: 10.1109/VETECS.2008.15

Library holdings: Search Newcastle University Library for this item

ISBN: 9781424416448