Novel wideband chaotic approach LNA with microcontroller compatibility for 5G wireless secure communication

Abstract

The tremendous growth of recent technologies toward secure communication networks requires two application goals: (1) encrypted message signal and (2) wide bandwidth operation. This work proposes a wide bandwidth disembodied polynomial chaos approach low‐noise amplifier (LNA) with microcontroller compatibility for 5G wireless secure communication. Two different architectures are proposed for achieve desired goal. First architecture approach uses three‐state variable Lorenz system which novitiate into discrete mode by using Euler method and make compatibility with microcontroller. The characteristics of output chaotic waveforms from first approach realized by using bifurcation and Lyapunov exponent methods. The propose first novel design methodology reproduce its dynamical behavior with conventional continuous‐time system and provides three output chaotic states which is used to encrypt message at the physical layer and achieves security in the telecommunication technologies. While in second architecture, LNA is designed using disembodied polynomial chaos approach which reproduce chaotic output signal over wide bandwidth ranging from 2 to 10 GHz. The LNA is implemented and fabricated using TSMC 45 nm commercial process and reveals minimum noise figure up to 1.5 dB. The fabrication chip of chaos approach LNA under the power consumption of 3.2 mW made good correlation with simulation ones.

Research on Grid Scroll Chaotic Extended Sequence Algorithm and Its Circuit Implementation for F‐OFDM System

“…It is an adaptive airport waveform modulation technology whose subcarrier bandwidth can be adjusted according to speci c application scenarios. F-OFDM technology has many advantages, such as no need for strict synchronization, reduced out-of-band energy leakage, the di erent waveform modulation, multiple access technology and frame structure based on the mobile communication application scene and business requirements, the dynamic soft interface parameter con guration according to the 5G business needs, and packet tra c transmission suitable for Internet of things [1][2][3][4][5]. In the F-OFDM system, when subcarriers of sub-band are superimposed after IFFT operation, multiple subcarriers will reach the peak value at the same time, resulting in higher peak-to-average power ratio (PAPR) of synthetic signal, which seriously a ects the system performance and limits its application in 5G.…”