Abstract
The spectrum is a scarce resource and shall be used efficiently. It is observed that fixed spectrum allocation techniques, currently in use, may not be able to accommodate increased number of users trying simultaneously to access the network. Researches suggest that this problem of spectrum scarcity can be addressed by cognitive radio networks; which permits the dynamic use of spectrum. One of the basic requirements of dynamic spectrum access in cognitive radio network is spectrum handoff. There is an associated issue with frequent spectrum handoffs and that is of the ping-pong ect. The ping-pong ect is caused due to the motion of mobile users between the adjacent cells, thus, initiating unnecessary spectrum handoffs. The purpose of this study is to develop and analyse a system that has the ability to perform cient decision about the execution of spectrum handoffs and in turn reduce the chances of ping-pong ect. Therefore, a fuzzy logic based system has been developed in a cognitive radio WLAN and UMTS environment and handoff is investigated between primary and secondary users. Our proposed hybrid system uses a two-stage fuzzy logic controller to reduce the number of ping-pong handoffs. In the rst stage, the system is designed to control the power of SU and to avoid any interference to PU. In the second stage, the system is designed to take the decision to execute handoff.
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Bushra Naeem declares that she has no conflict of interest. Sarah Javed declares that she has no conflict of interest. Mumraiz Kasi declares that he has no conflict of interest. Kamran Sani declares that he has no conflict of interest.
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Naeem, B., Javed, S., Kasi, M.K. et al. Hybrid Fuzzy Logic Engine for Ping-Pong Effect Reduction in Cognitive Radio Network. Wireless Pers Commun 116, 177–205 (2021). https://doi.org/10.1007/s11277-020-07710-7
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DOI: https://doi.org/10.1007/s11277-020-07710-7