EURASIP Journal on Wireless Communications and Networking
Volume 2009 (2009), Article ID 598140, 19 pages
doi:10.1155/2009/598140
Research Article

Implementation of a Cooperative MAC Protocol: Performance and Challenges in a Real Environment

Thanasis Korakis,1 Zhifeng Tao,2 Shashi Raj Singh,1 Pei Liu,1 and Shivendra S. Panwar1

1Department of Electrical and Computer Engineering, Polytechnic Institute of NYU, 6 Metrotech Center, Brooklyn, NY 11201, USA
2Mitsubishi Electric Research Laboratories (MERL), 201 Broadway, Cambridge, MA 02139, USA

Received 31 October 2008; Accepted 31 March 2009

Academic Editor: Xavier Mestre

Copyright © 2009 Thanasis Korakis et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Cooperative communication is an active area of research today. It enables nodes to achieve spatial diversity, thereby achieving tremendous improvement in system capacity and delay. Due to its immense potential, extensive investigations have been directed to closely examine its performance by means of both analysis and simulation. However, the study of this new technology in an implementation-based system is very limited. In this paper, we present two implementation approaches to demonstrate the viability of realizing cooperation at the MAC layer in a real environment. The paper describes the technical challenges encountered in each of the approaches, details the corresponding solution proposed, and compares the limitations and benefits of the two approaches. Experimental measurements are reported, which not only help develop a deeper understanding of the protocol behavior but also confirm that cooperative communication is a promising technology for boosting the performance of next-generation wireless networks.