Mobile Ad Hoc Networks

Objective

Publications

Previous Work

adhoc network Drawing of emergency vehicles Drawing of military vehicles Geometrical figures

Objective

Advances in wireless local-area network technology (typically based on IEEE 802.11) and the growing interest in public safety communications have created new demands for reliable transmission of real-time multimedia information over distributed mobile ad hoc networks (MANET).
The objective of this project is to test and evaluate the performance of MANET for safety communications and tactical operations. In particular, by providing diversity cooperative transmission can indeed increase throughput as well as transmission coverage. In this study we will specifically concentrate on the synchronization aspects of cooperative transmission, which is one of the major issues in its application to multi-hop transmission in wireless ad-hoc network environments.

The main focus will be to address quality of service issues and network reliability for transmission of real-time information. Specifically, we are pursuing the following tasks:

In mobile multi-hop network communications, multipath fading and interference can severely degrade the throughput, particularly for real-time transmission of multimedia information. This project is mainly concerned with enhancing the multihop link performance under fast fading conditions. The main goal is to develop a testbed to evaluate network performance for data, voice and video services.

Publications

H. Gharavi, "Multichannel Mobile Ad Hoc Links for Multimedia Communications", Proceedings of the IEEE, 2008, 96, 77-96;
B. Hu and H. Gharavi, "Directional routing protocols for ad-hoc networks", IET Communications, 2008, 2, 650-657
B. Hu and H. Gharavi, "DSR-Based Directional Routing Protocol for Ad Hoc Networks", Global Telecommunications Conference, 2007. 4936-4940
H. Gharavi and B. Hu, "Directional routing protocols for ad-hoc networks", The Proceedings of the IEEE CCNC Personal Ad Hoc and Sensor Networks, Las Vegas, January 2009, 1-5
N. Wu and H. Gharavi,"Combating Imperfect Synchronization In Cooperative MIMO Systems using Linear Dispersion Structure", To be Submitted.
M. R. Souryal, "Non-coherent amplify-and-forward generalized likelihood ratio test receiver", in Proc. IEEE GLOBECOM, Dec. 2008
M. R. Souryal and H. You, "Diversity performance of a practical non-coherent detect-and-forward receiver", in Proc. IEEE GLOBECOM, Dec. 2008

Previous Work

Previous work in Mobile Ad Hoc Networks can be found on this page.