Optimization Of Dual-Hop Wireless Link Under Energy Harvesting Scheme

One of the major challenges of the dual-hop energy harvesting (EH) a link is, to optimize the link parameters to achieve maximum signal to noise ratio (SNR) at the receiving end. In this paper, the optimum condition of three parameters: ‘power supply at source terminal’, ‘power splitting ratio’, and ‘gain of relay’ is achieved in four ways. In the first and second techniques, the above three parameters are optimized analytically from the profile of normalized channel capacity and bit error rate (BER), where the corresponding graphs show maxima and minima at the same optimum point. In the third technique, we find the separation between profiles of ‘normalized channel capacity’ of EH and non-EH minimum at optimum condition. In the fourth technique, we transmit grayscale images under 16-QAM using a proposed algorithm of pixel to modulated symbol conversion. We then measure the quality of the image in terms of SNR and peak signal to noise ratio (PSNR) in dB and we verify the optimum condition of the network by the quality of received images.

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