… In order to formulate an upper bound on spectral efficiency that can be gained through
antenna design, we must make the antenna structure part of the optimization variable. In this …

… achieved with ideal switching time [46] against the results of our study, we observe that for
all N > 1 the UE fails to achieve the theoretical upper bound on capacity. A further growth of N …

… of such flying BSs, directional antennas can be utilized to … radiation pattern for the directional
antennas. Based on such a … antennas and the UAVs have identical directional antennas …

… We assume effective echo signals are coming from the direction corresponding to the maximum
antenna gain, and hence the results serve as upper bounds for other target directions. 1) …

… Q-factor bounds can be used to determine the optimal bandwidth positions for antennas, …
We also construct an essentially bandwidth optimal embedded antenna, which is interesting …

… at optimal and coaxial orientations of antenna beams for various propagation scenarios, …
of the directional antenna use and their direction choices on the channel capacity versus …

… focus on the hybrid millimeter wave networks with directional antenna [29]–[31], which mainly
exploit the beamforming gain of directional antennas to combat the path loss of millimeter …

… to steer directional antennas. This kind of protocols are proposed to guarantee upper bound
on the pairwise worst case neighbor discovery time. However, they fail to achieve bounded …

… The estimators introduced in this section, as well as their corresponding error bounds in
terms of the CRB, are summarized in Table I. Each of them requires the application of either the …

… -directional antenna is known to be capable of providing a larger coverage than a directional
antenna… density in the network, the directional antenna can also overcome the drawback in …