A trust computed framework for IoT devices and fog computing environment

Wireless Networks - In this paper, we have demoralized the transmission processing concerns of fog nodes and IoT device layer attack during the handoff (mobility) of IoT devices in the fog...     

Design and analysis of on-demand reconfigurable WiMAX/WLAN high isolation 2 × 2 MIMO antenna oriented adjacent/orthogonally for imaging applications in UWB-X band

In this reported work, two dual notched bands from 3.39 GHz to 3.92 GHz and from 4.43 GHz to 5.48 GHz for the WiMAX band (3.3–3.8 GHz) and for (lower) WLAN band (5.15–5.35 GHz) MIMO antenna with adjacent/orthogonal orientations has been investigated. Also, the proposed antenna is capable of controlling these notched bands whenever the need for power saving arises by reconfiguring them using PIN diodes. The issue of isolation between the radiating elements has been overcome by placing the radiating structures in the adjacent and orthogonal arrangement. The proposed antenna is characterized proving an average gain of 4.15/4.37 dBi and maximum radiation efficiency of 91/87% for adjacent/orthogonal orientation. The proposed antenna also shows good agreement with simulated and measured impedance bandwidth, diversity performances in terms of ECC, DG, TARC, and CCL for which values are well below the permissible range.     

Design,analysis and characterization of four port multiple-input-multiple-output UWB-X band antenna with band rejection ability for wireless network applications

Wireless Networks - In this proposed research article, four-port dual notched bands multiple-input-multiple-output (MIMO) antenna configuration is proposed and is experimentally investigated by...     

Cognitive radio paradigm and recent trends of antenna systems in the UWB 3.1–10.6 GHz

Wireless Networks - This article mainly focuses on the concept of cognitive radio paradigm in the ultra-wideband 3.1–10.6 GHz and recent trends of various antenna systems required...     

Development of high-speed FSO transmission link for the implementation of 5G and Internet of Things

Wireless Networks - Internet of Things (IoT) enables the inter-connectivity of different “things” using which wide range of items and devices can communicate with each other and their...     

A bio-inspired privacy-preserving framework for healthcare systems

The Journal of Supercomputing - Wireless computing has revolutionized our life with the technological advancement from the traditional networking into a new epoch for communication in ad hoc...     

Meandered low profile multiband antenna for wireless communication applications

Wireless Networks - The compact slotted antenna having offset feed radiating in the multi-frequency bands is proposed. The antenna geometry comprises of a vertical and horizontally coupled slotted...     

Performance analysis of mode division multiplexing based free space optics system incorporating on–off keying and polarization shift keying under dynamic environmental conditions

In this paper, we propose a novel mode division multiplexing (MDM) based FSO transmission system incorporating polarization shift keying (PolSK) to enhance the information carrying capacity of the system. Using numerical simulations, we report the transmission of two independent 40 Gbps information signals using distinct Laguerre Gaussian modes up to an FSO transmission reach of 90 km under the influence of clear environmental conditions using the proposed system. Further, the influence of different environmental conditions such as rain, haze, and fog on the performance of the proposed link using bit error rate as performance metrics has also been investigated in this paper. Also, we report a comparative analysis of PolSK and on–off keying modulation formats in the proposed MDM-FSO link under the same environmental conditions. The simulation results show that under different weather conditions, PolSK based MDM-FSO transmission system demonstrates better performance.