Abstract
Under the impact of co-channel interference (CCI) at two source nodes and the relay, we investigate the performance of dual-hop amplify-and-forward (AF) relaying networks. In terms of energy harvesting, the power-constrained relay first scavenges energy from the received signal and CCI signals then amplifies them and forwards them to the destination. In particular, we provide closed-form expressions for outage probability and bit error ratio (BER) to easily analyse the system performance. In this paper, the impact of distinct interference power level and the number of CCIs are derived. Monte Carlo simulations are used to provide expressions related to outage probability performance. It is confirmed that energy efficiency at the relay can be enhanced due to several advantages of CCI signals which can also prolong the life expectancy of relaying systems.
Highlights
Limited lifespan is a big problem of energy-constrained wireless communication networks
Wireless power transfer (WPT) through electromagnetic waves is a prime candidate in terms of energy harvesting (EH) techniques, which is easy to employ at the receiver compared to aforementioned sources
When the number of co-channel interference (CCI) is altered, we can achieve the exact expressions for signal-to-interferenceplus-noise ratio (SINR) and approximate closed-form expressions for outage probability and throughput
Summary
Limited lifespan is a big problem of energy-constrained wireless communication networks. We propose an EH protocol which can harvest energy with pre-calculated time switching coefficients from the source signals in two-way relaying networks and CCI to enhance transmission between the S1 and S2 source pair considering a dual-hop AF relaying network. We carefully evaluate the outage probability of two-hop relaying networks under the impact of CCI and the energy harvestingassisted relaying channel, in which the benefits of energy harvesting relay-aided cooperative transmission are verified. It is noted that under the impact of CCI, the constraint of the energy harvesting policy can be given as LSk. In the case of fixed harvesting power at relay, ER, time switching coefficients can be calculated as α0 = 2η.
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