Abstract
A scheme of relay selection and transmission power allocation with energy harvesting relay is proposed to maximize the transmission rate in the wireless-powered full-duplex (FD) multi-relay system. Bases on the best worse channel and best harmonic mean selection, the best worse channel selection and the best harmonic mean selection with nodes power algorithms is proposed by considering the relay self-interference channel and different power constraints. Then a capacity optimization problem is constructed by jointly considering relay selection and power allocation, and is decoupled into two-step sub-optimal problems to obtain the solution of power allocation parameters. Finally, the outage probability of the optimal relay selection method is derived. Numerical results show that the proposed scheme improves the capacity performance of the system by more than 30% compared with the random selection scheme when the system has 5 relays. A comparison with the equal power allocation scheme shows that the proposed scheme improves the capacity performance by 10% and the outage probability decreases by 16% when the signal to noise ratio is 15 dB.
| Translated title of the contribution | A Scheme of Relay Selection and Transmission Power Allocation for Wireless Energy Transfer |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 58-64 |
| Number of pages | 7 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 53 |
| Issue number | 4 |
| DOIs | |
| State | Published - 10 Apr 2019 |