Optimal power-splitting protocol in the wireless relay networks
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In this study, power-splitting relaying is considered for decode-and-forward (DF)-based relay networks, which consist of a source, relay, and destination, and harvest energy from the radio frequency (RF) radiation of the source. To minimize outage probabil-ities, we analytically derive the optimal power ratio of power splitting for DF relaying in closed-form and present the exact expression of outage probability with an optimal ratio over Rayleigh fading channels. Therefore, this paper proposes Relay Selection of Optimal Power Splitting(RSOPS), an optimal power-splitting relay selection scheme that maximizes the achievable transmission rate between the source and destination and can be used on a Simultaneous Wireless Information and Power Transfer(SWIPT) system. RSOPS selects the “Best” relay that maximizes the achievable transmission rate and demonstrates a significantly reduced outage probability. The outage probability expression with the optimal ratio is validated using the numerical results. The optimal power-splitting relaying is compared to other power-splitting protocols with a fixed power-splitting ratio.
Abstract
In this study, power-splitting relaying is considered for decode-and-forward (DF)-based relay networks, which consist of a source, relay, and destination, and harvest energy from the radio frequency (RF) radiation of the source. To minimize outage probabil-ities, we analytically derive the optimal power ratio of power splitting for DF relaying in closed-form and present the exact expression of outage probability with an optimal ratio over Rayleigh fading channels. Therefore, this paper proposes Relay Selection of Optimal Power Splitting(RSOPS), an optimal power-splitting relay selection scheme that maximizes the achievable transmission rate between the source and destination and can be used on a Simultaneous Wireless Information and Power Transfer(SWIPT) system. RSOPS selects the “Best” relay that maximizes the achievable transmission rate and demonstrates a significantly reduced outage probability. The outage probability expression with the optimal ratio is validated using the numerical results. The optimal power-splitting relaying is compared to other power-splitting protocols with a fixed power-splitting ratio.
참고문헌 (22)
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