- Research Article
- Open Access
Capacity of Wireless Ad Hoc Networks with Opportunistic Collaborative Communications
EURASIP Journal on Wireless Communications and Networking volume 2007, Article number: 053075 (2007)
Optimal multihop routing in ad hoc networks requires the exchange of control messages at the MAC and network layer in order to set up the (centralized) optimization problem. Distributed opportunistic space-time collaboration (OST) is a valid alternative that avoids this drawback by enabling opportunistic cooperation with the source at the physical layer. In this paper, the performance of OST is investigated. It is shown analytically that opportunistic collaboration outperforms (centralized) optimal multihop in case spatial reuse (i.e., the simultaneous transmission of more than one data stream) is not allowed by the transmission protocol. Conversely, in case spatial reuse is possible, the relative performance between the two protocols has to be studied case by case in terms of the corresponding capacity regions, given the topology and the physical parameters of network at hand. Simulation results confirm that opportunistic collaborative communication is a promising paradigm for wireless ad hoc networks that deserves further investigation.
Gupta P, Kumar PR: The capacity of wireless networks. IEEE Transactions on Information Theory 2000,46(2):388-404. 10.1109/18.825799
Toumpis S, Goldsmith AJ: Capacity regions for wireless ad hoc networks. IEEE Transactions on Wireless Communications 2003,2(4):736-748.
Laneman JN, Tse DNC, Wornell GW: Cooperative diversity in wireless networks: efficient protocols and outage behavior. IEEE Transactions on Information Theory 2004,50(12):3062-3080. 10.1109/TIT.2004.838089
Qin M, Blum RS: Capacity of wireless ad hoc networks with cooperative diversity: a warning on the interaction of relaying and multi-hop routing. Proceedings of IEEE International Conference on Communications (ICC '05), May 2005, Seoul, South Korea 2: 1128-1131.
Toumpis S, Goldsmith AJ: Performance, optimization, and cross-layer design of media access protocols for wireless ad hoc networks. Proceedings of IEEE International Conference on Communications (ICC '03), May 2003, Anchorage, Alaska, USA 3: 2234-2240.
Mitran P, Ochiai H, Tarokh V: Space-time diversity enhancements using collaborative communications. IEEE Transactions on Information Theory 2005,51(6):2041-2057. 10.1109/TIT.2005.847731
Scaglione A, Hong Y-W: Opportunistic large arrays: cooperative transmission in wireless multihop ad hoc networks to reach far distances. IEEE Transactions on Signal Processing 2003,51(8):2082-2092. 10.1109/TSP.2003.814519
Stefanov A, Erkip E: Cooperative coding for wireless networks. IEEE Transactions on Communications 2004,52(9):1470-1476. 10.1109/TCOMM.2004.833070
About this article
Cite this article
Simeone, O., Spagnolini, U. Capacity of Wireless Ad Hoc Networks with Opportunistic Collaborative Communications. J Wireless Com Network 2007, 053075 (2007). https://doi.org/10.1155/2007/53075
- Information System
- Physical Parameter
- Data Stream
- System Application
- Relative Performance