Capacity of Ad Hoc wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
On the performance of ad hoc networks with beamforming antennas
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Smart Antennas for Wireless Communications: IS-95 and Third Generation CDMA Applications
Transmission scheduling in ad hoc networks with directional antennas
Proceedings of the 8th annual international conference on Mobile computing and networking
Using directional antennas for medium access control in ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
On the capacity improvement of ad hoc wireless networks using directional antennas
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
Enhancing TCP fairness in ad hoc wireless networks using neighborhood RED
Proceedings of the 9th annual international conference on Mobile computing and networking
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
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In this paper, we investigate the capacity bounds and throughput performance of ad hoc wireless networks with directional antennas. The capacity of a wireless network is constrained by the physical channel capacity and the interference from neighboring nodes. Gupta et al. have shown that in an arbitrary network with n nodes, the upper bound for per-node throughput capacity is O(1/√n), and even lower under a random network. Directional antennas, especially those with multi-beam forming capabilities, provide higher bandwidth and reduced interference area, which lead to elevated capacity bounds and improved performance. In this paper, we first present a study on the capacity bounds of ad hoc networking with directional antennas, including hybrid antenna patterns that are a mix of multi-beam forming and single-beam forming. We prove that adaptive multi-beam forming system further improves the network capacity over the single-beam directional networks, due to its desirable features of multiple transmission/ reception and anti-interference beam-forming. Then we further investigate the performance of adaptive multi-beam directional networking with regard to the prevalent Medium Access Control (MAC) protocols, namely, TDMA and CSMA/CA, under basic network topology assumptions. The results show that using adaptive multi-beam antennas can improve the network throughput by multi-fold depending on the number of beams, thus providing an effective means to achieve high data rate and reliable communication for future combat systems.