Open AccessOptimal frequency reuse scheme based on cuckoo search algorithm in Li‐Fi fifth‐generation bidirectional communication
Author(s) -
Murugaveni S.,
Mahalakshmi K.
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2019.1154
Subject(s) - computer science , visible light communication , bandwidth (computing) , cuckoo search , wireless , spectral efficiency , computer network , wireless network , reuse , algorithm , telecommunications , channel (broadcasting) , electrical engineering , engineering , light emitting diode , particle swarm optimization , waste management
Huge demand for bandwidth and capacity is exhibited by various wireless users and applications, for that purpose now the light‐fidelity (Li‐Fi)‐based technologies are developing. In visible light communication, the hybrid networks based on Wi‐Fi and Li‐Fi has emerged recently. It is based on the concept of integrating small cell Li‐Fi networks with large coverage radio frequency (RF) communication systems. For bidirectional data communication, the access links use shared bandwidth since the link of wireless backhaul invokes in the visible light spectrum. Due to the RF spectrum shortage, the bandwidth of Wi‐Fi access point (AP) and the coverage of Li‐Fi AP are limited in the outdoor environment. To tackle this issue, the authors propose a swarm intelligence‐based improved cuckoo search into the frequency reuse of a hybrid Wi‐Fi–Li‐Fi network in the outdoor environment. The proposed approach employed bidirectional visible light propagation with non‐orthogonal multiple access (NOMA) which is an effective approach towards fifth‐generation wireless networks. The NOMA can help various users at the same time with the same frequency and multiple power levels. The system throughput and spectral efficiency are improved with dynamic frequency reuse scheme. The simulation results are compared with conventional techniques to show its effectiveness.