Using directional antennas for medium access control in ad hoc networks

RR Choudhury, X Yang, R Ramanathan… - Proceedings of the 8th …, 2002 - dl.acm.org
… With directional antennas, two pairs of nodes located in each … In addition, the higher gain of
directional antennas allows a … exploits the characteristics of directional antennas. Our design …

Analysis and enhancements for IEEE 802.11 networks using directional antenna with opportunistic mechanisms

T Nadeem - IEEE Transactions on Vehicular Technology, 2010 - ieeexplore.ieee.org
… In fact, this simplification will result in calculating the upper bound of P(HOLIdle) instead. …
upper bound and the actual values using simulation. Given this simplification, the upper bound

An integrated neighbor discovery and MAC protocol for ad hoc networks using directional antennas

G Jakllari, W Luo… - IEEE Transactions on …, 2007 - ieeexplore.ieee.org
Many MAC sub-layer protocols for supporting the usage of directional antennas in ad hoc …
of directional antennas, it is essential to shift to the exclusive usage of directional antennas for …

Wireless network design with directional antennas

P Gopalakrishnan, L Kant, KR Krishnan… - MILCOM 2007-IEEE …, 2007 - ieeexplore.ieee.org
… a single incident link, with the flow-rate bounded by the capacity of the link. Therefore, within
a … , with the average flow-rate on each link bounded by the capacity of the link. In short, the …

On the capacity of multi-hop wireless networks with heterogeneous antennas

O Bazan, M Jaseemuddin - 2010 IEEE 72nd Vehicular …, 2010 - ieeexplore.ieee.org
… of capacity bounds, we computed the maximum flow by solving our multi-commodity flow
problem for multi-hop wireless networks with both omnidirectional and beamforming antennas

On the performance of ad hoc networks with beamforming antennas

R Ramanathan - Proceedings of the 2nd ACM international symposium …, 2001 - dl.acm.org
… Rather, by analyzing the performance for these two extremes, we can place a lower bound
Working toward a lower bound on the performance improvement with beamforming antennas

On Methods to Determine Bounds on the -Factor for a Given Directivity

BLG Jonsson, S Shi, L Wang… - … on Antennas and …, 2017 - ieeexplore.ieee.org
… for antenna designs, but knowing bounds on the Q-factor certainly help in defining antenna
… In the case of Q-factor bounds, we find that almost all constraints on the antenna parameters …

Performance of ad hoc routing using directional antennas

RR Choudhury, NH Vaidya - Ad Hoc Networks, 2005 - Elsevier
… We simulate our scenarios in a bounded region of 1500 × 1500 m, with Constant Bit Rate
(CBR) traffic for data communication. The topology, flow pattern and traffic distribution is …

Physical limitations on antennas of arbitrary shape

M Gustafsson, C Sohl… - Proceedings of the …, 2007 - royalsocietypublishing.org
… Two different types of bounds on the first resonance of an antenna are addressed in this …
In many antenna applications, it is desirable to bound the product G Λ B independently of the …

Multi-antenna information theory

G Wen - Progress In Electromagnetics Research, 2007 - jpier.org
… imposed by the antennas have also been discussed, and analytical upper bounds on the
information capacity in terms of the antenna parameters for multiple antenna system in free …