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Outage Probability and Intercept Probability Of Cognitive IoTs Networks With Relay Selection, Passive Eavesdropper and Hardware Noises

Minh Pham Xuan, Hien Nguyen Van, Hop Pham Quoc, Duy Trang Trung, Phu Le Quang, Hieu Nguyen Trung

Annals of Computer Science and Information Systems

2022

Vol. 33

165--170

In this paper, we measure outage probability (OP) and intercept probability (IP) of a secondary secure network in an underlay spectrum-sharing cognitive radio (USS-CR). In the considered scheme, one of secondary relays is selected at a cooperative phase to provide the highest signal-to-noise ratio (SNR) at a secondary destination. We consider a practical scenario, where channel state information (CSI) of the secondary eavesdropping links is not available. OP and IP of the considered scheme are evaluated via mathematical analysis and computer simulations, under impact of hardware noises, over Rayleigh fading channels.

Estimation and Compensation of IQ Imbalance in SWIPT System

Nair Ajin R., Kirthiga S., Jayakumar M.

International Journal of Electronics and Telecommunications

2021

Vol. 67, No. 4

679--684

Although there are many articulations of SWIPT architecture implementations, the hardware impairment aspect involved in the SWIPT architecture system is not given much attention. This paper evaluates the performance of SWIPT PS Receiver architecture in the presence of IQ imbalance hardware impairment with 16-QAM transmitter and AWGN channel. The parameters SNR, BER is evaluated in the presence of amplitude, phase imbalance, and PS factor at the SWIPT receiver side. Further, the IQ imbalance is estimated and compensated using a blind compensation algorithm. The system achieved a maximum BER of 10−7 in the presence of amplitude and phase imbalance of 0.2 and 1.6 respectively.