Analysis of connectivity in Ad Hoc network with Nakagami-m fading

Xu, Bintai; Zhu, Qi

doi:10.1109/infoseee.2014.6946193

Cited by 5 publications

(2 citation statements)

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“…The connectivity of CRAHNs is different and more challenging compared with conventional AHNs because secondary users have to opportunistically utilize the licensed spectrum band of primary users. There have been extensive studies on the connectivity of conventional AHNs [2,3,4,5,6]. Particularly, for nodes with omnidirectional antennas and disk transmission range

r_{0}

, the authors in [2] present a framework for calculation of stochastic connectivity of wireless multi-hop AHNs.…”

Section: Introductionmentioning

confidence: 99%

“…Then, the impact of critical transmission range, i.e., the minimum common value of the nodes’ transmitting range that produces a connected communication graph, on connectivity of AHNs in the presence of node mobility, is studied in [3]. For a more accurate modeling of the wireless channel, the connectivity of AHNs under the effects of log-normal shadowing, Rayleigh fading, and Nakagami- m fading is analyzed in [4,5,6], respectively. It is shown that fading environment helps to increase the connectivity of AHNs.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Beamforming on the Path Connectivity in Cognitive Radio Ad Hoc Networks

Dung

Tran

Choi

et al. 2017

Sensors

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This paper investigates the impact of using directional antennas and beamforming schemes on the connectivity of cognitive radio ad hoc networks (CRAHNs). Specifically, considering that secondary users use two kinds of directional antennas, i.e., uniform linear array (ULA) and uniform circular array (UCA) antennas, and two different beamforming schemes, i.e., randomized beamforming and center-directed to communicate with each other, we study the connectivity of all combination pairs of directional antennas and beamforming schemes and compare their performances to those of omnidirectional antennas. The results obtained in this paper show that, compared with omnidirectional transmission, beamforming transmission only benefits the connectivity when the density of secondary user is moderate. Moreover, the combination of UCA and randomized beamforming scheme gives the highest path connectivity in all evaluating scenarios. Finally, the number of antenna elements and degree of path loss greatly affect path connectivity in CRAHNs.

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