Analysis of partial relay selection in NOMA systems with RF energy harvesting

In this paper, we investigate a dual hop communication decode-and-forward relaying system where a source node wants to transmit two symbols to its two desired destinations with the help of a selected energy constraint relay node. The power for relay operation comes from the harvested energy of ambient radio frequency (RF) and the non-orthogonal multiple access (NOMA) technology is used. We mathematically evaluate the impact of relay selection (RS) on the system performance by considering the probability that symbols cannot be decoded at the two end users under the effect of imperfect and perfect successive interference cancellation (SIC). We also perform Monte-Carlo simulations in MATLAB to verify the correctness of our analysis. The results show that the performance of the system is significantly influenced by the efficiency of SIC technique. Moreover, if the power transmission is in high region, we can use approximation method to simplify our analysis.

[1]  Ivan Seskar,et al.  Practical implementation of successive interference cancellation in DS/CDMA systems , 1996, Proceedings of ICUPC - 5th International Conference on Universal Personal Communications.

[2]  Fa-Long Luo,et al.  Non-Orthogonal Multiple Access (NOMA): Concept and Design , 2016 .

[3]  D. Rajan.  Probability, Random Variables, and Stochastic Processes , 2017 .

[4]  Robert Schober,et al.  Relay Selection for Simultaneous Information Transmission and Wireless Energy Transfer: A Tradeoff Perspective , 2013, IEEE Journal on Selected Areas in Communications.

[5]  Sheng Luo,et al.  Adaptive Transmission for Cooperative NOMA System With Buffer-Aided Relaying , 2017, IEEE Communications Letters.

[6]  Jinjin Men,et al.  Performance analysis for NOMA energy harvesting relaying networks with transmit antenna selection and maximal-ratio combining over Nakagami-m fading , 2016, IET Commun..

[7]  Cheng Lei,et al.  Enhanced power allocation scheme in ultra-dense small cell network , 2016 .

[8]  Xiaoming Chen,et al.  Energy-efficient optimisation for secrecy wireless information and power transfer in massive MIMO relaying systems , 2017, IET Commun..

[9]  H. Vincent Poor,et al.  Cooperative Non-orthogonal Multiple Access With Simultaneous Wireless Information and Power Transfer , 2015, IEEE Journal on Selected Areas in Communications.

[10]  Shuangfeng Han,et al.  Non-orthogonal multiple access for 5G: solutions, challenges, opportunities, and future research trends , 2015, IEEE Communications Magazine.

[11]  Ying Wang,et al.  Transceiver design for cooperative non-orthogonal multiple access systems with wireless energy transfer , 2016, IET Commun..

[12]  Zhiguo Ding,et al.  The Impact of Power Allocation on Cooperative Non-orthogonal Multiple Access Networks With SWIPT , 2017, IEEE Transactions on Wireless Communications.

[13]  Sonia Aïssa,et al.  RF-Based Energy Harvesting in Decode-and-Forward Relaying Systems: Ergodic and Outage Capacities , 2015, IEEE Transactions on Wireless Communications.

[14]  Yingmin Wang,et al.  Analysis of non-orthogonal multiple access for 5G , 2016, China Communications.

[15]  Soo Young Shin,et al.  Exploiting Non-Orthogonal Multiple Access in Cooperative Relay Sharing , 2017, IEEE Communications Letters.