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Throughput of 802.11g wireless devices in ad hoc mode

The U.S. Army Research Laboratory has used IEEE 802.11g standard wireless LANs for implementation in mobile ad hoc networks (MANET). One common problem with the use of 802.11g wireless devices is maintaining a high operational throughput over distances. In this paper, we assess the throughput performance of four 802.11g wireless network interface cards (NIC) performing in ad-hoc mode and an outdoor environment. This assessment was based on characteristics of NICs, such as chipset, signal amplification, and antenna diversity over various operating distances. The assessment showed that antenna diversity for outdoor environment has no throughput improvement, and amplification did not always improve data rates. The wireless communication with small buffer size minimizes fluctuation of throughput date rate over large range of distances.