| In wireless ad hoc networks, a key issue is how to improve the system throughput with low cost. To address this issue, one common approach is the single-radio multi-channel scheme. Clearly, a better network performance is achieved by using multiple radios. Multi-channel Multi-radio (MCMR) is a promising solution because commercial off-the-shelf (COTS) products can be utilized. In this thesis, we investigate the performance of IEEE 802.11n in Multi-channel Multi-radio wireless ad hoc networks. Particularly, we will focus on packet aggregation, which is the main feature of IEEE 802.11n compared to previous media access control (MAC) schemes. To conduct the analysis, a new implementation of IEEE 802.11 MAC is presented, which supports MCMR and the packet aggregation technique. Extensive simulation results reveal that the packet aggregation mode can significantly improve the throughput and delay performance of wireless ad hoc network. Moreover, with appropriate channel assignment, such improvement grows as the number of radios increases. |
