In conventional cognitive radio ad hoc networks, both primary users (PUs) and secondary users (SUs) are typically equipped with omni-directional antennas, which can cause high interference. As a result, SUs usually suffer from the poor network connectivity due to the high interference caused by PUs. Different from omni-directional antennas, directional antennas can concentrate the transmission on some desired directions and reduce interference on other undesired directions. In this paper, we investigate the network connectivity of a novel cognitive radio ad hoc network with directional antennas (DIR-CRAHNs), in which both PUs and SUs are equipped with directional antennas. We derive the local connectivity (i.e., probability of node isolation) of such DIR-CRAHNs in closed form and numerical results show that the proposed DIR-CRAHNs have higher local connectivity than conventional cognitive radio ad hoc networks.
|Title of host publication||2016 IEEE International Conference on Communication Systems, ICCS 2016|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 26 Jan 2017|
|Event||2016 IEEE International Conference on Communication Systems, ICCS 2016 - Shenzhen, China|
Duration: 14 Dec 2016 → 16 Dec 2016
|Name||2016 IEEE International Conference on Communication Systems, ICCS 2016|
|Conference||2016 IEEE International Conference on Communication Systems, ICCS 2016|
|Period||14/12/16 → 16/12/16|
Bibliographical noteFunding Information:
The work described in this paper was partially supported by Macao Science and Technology Development Fund under Grant No. 096/2013/A3 and partially supported by the National Natural Science Foundation of China under Project No. 61471026. The authors would like to thank Gordon K.-T. Hon for his constructive comments
© 2016 IEEE.