Self-Powered Wireless Two-Way Relaying Networks: Model and Throughput Performance with Three Practical Schemes
- 322 Downloads
In this paper, we analyse the throughput performance for two, three and four time slot transmission schemes, (2TS, 3TS and 4TS) for two-way amplify-and-forward relaying networks, in which we use RF signal for the energy harvesting (EH) enabled relay node to assist the exchange of information. Most importantly, we derive expression for delay-limited throughput and the approximate expressions for outage probability, and we also compare these results in case of EH and non-EH. Additionally, the trade-off between the distance allocation between source to relay, and relay to destination is comprehensively investigated, in which the large scale path loss is considered to obtain the optimal throughput. Thanks to the numerical results, we consider a scenario in each scheme, where the throughput of 2TS is higher regardless of values of power splitting coefficients compared to other two schemes. Numerical results provide an interesting trade-off between the considered EH parameters in the system design, and reveal the improvement of bandwidth and power efficiency. The proposed schemes confirm that the appropriate placement of nodes can help achieve low outage probability and optimal throughput.
KeywordsTwo-way Amplify-and-forward Energy harvesting Throughput
This research is funded by Foundation for Science and Technology Development of Ton Duc Thang University (FOSTECT), website: http://fostect.tdt.edu.vn, under Grant FOSTECT.2016.BR.21.
- 1.Iwamura, M. (2015). NGMN view on 5G architecture. In Proceedings of IEEE 81st vehicular technology conference (VTC Spring), Glasgow, Scotland, pp. 1–5.Google Scholar
- 2.Droste H., et al. (2015). The METIS 5G architecture: A summary of METIS work on 5G architectures. In Proceedings of IEEE 81st vehicular technology conference (VTC Spring), Glasgow, Scotland, pp. 1–5.Google Scholar
- 6.Ejaz, W., Kandeepan, S., & Anpalagan, A. (2015). Optimal placement and number of energy transmitters in wireless sensor networks for RF energy transfer. In Proceedings of IEEE 26th annual international symposium on personal, indoor, and mobile radio communications (PIMRC), Aug./Sep. 2015, pp. 1238–1243.Google Scholar
- 12.Rankov, B., & Wittneben, A. (2006). Achievable rate regions for the two-way relay channel. In Proceedings of IEEE ISIT, pp. 1668–1672.Google Scholar
- 14.Chen, Z., Xia, B., & Liu, H. (2014). Wireless information and power transfer in two-way amplify-and-forward relaying channels. In Proceedigs of IEEE global conference on signal and information processing (GlobalSIP), Atlanta, GA, USA, pp. 168–172.Google Scholar
- 15.Liu, Y., Wang, L., Elkashlan, M., Duong, T. Q., & Nallanathan, A. (2014). Two-way relaying networks with wireless power transfer: Policies design and throughput analysis. In Proceedings of IEEE global communication conference. Austin, TX, USA, pp. 4030–4035Google Scholar
- 17.Kaya, T., Varan, B., & Yener, A. (2013). Energy harvesting two-way half-duplex relay channel with decode-and-forward relaying: Optimum power policies. In Proceedings of 18th IEEE international conference on digital signal processing (DSP’13), pp. 1–6.Google Scholar
- 18.Tutuncuoglu, K., Varan, B., & Yener, A. (2013). Optimum transmission policies for energy harvesting two-way relay channels. In Proceedings of IEEE international conference on communicatins workshop (ICC’13), Budapest, Hungary, pp. 1–5.Google Scholar
- 19.Wang, Z., Chen, Z., Yao, Y., Xia, B., & Liu, H. (2014). Wireless energy harvesting and information transfer in cognitive two-way relay networks. In Proceedings of IEEE Global Communications Conference (pp. 3465–3470).Google Scholar