Dynamic power splitting scheme for DF relaying‐based SWIPT networks with direct link. Issue 25 (1st December 2019)

• Record Type: Journal Article
• Authors: Liu, Yingting; Ye, Yinghui; Ding, Haiyang
• Is Part Of: Electronics letters. Volume 55:Issue 25(2019)
• Page Start: 1340
• Page End: 1343
• Publication Date: 2019-12-01
• Subjects: probability -- decode and forward communication -- radiofrequency interference -- radio networks -- wireless channels -- energy harvesting -- amplify and forward communication -- relay networks (telecommunication); optimal DPS factor -- outage probability -- ergodic capacity -- competitive schemes -- dynamic power splitting scheme -- DF relaying‐based SWIPT networks -- direct link -- received signal‐to‐noise ratio -- destination node -- noncooperative network; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2019.2807
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A dynamic power splitting (DPS) scheme for decode‐and‐forward (DF) relaying based simultaneous wireless information and power transfer (SWIPT) networks with a direct link (DL) is considered. The optimal DPS factor can maximise the received signal‐to‐noise ratio at the destination node. If the DPS factor is equal to zero, the proposed model will degenerate into a non‐cooperative network which only utilises the DL to accomplish the transmission. The authors first derive the optimal DPS factor, and then derive analytical expressions for outage probability and ergodic capacity. Moreover, to obtain the diversity order, the asymptotic expression for outage probability is also derived. Numerical results show that the performance of the proposed scheme is the best compared to the other competitive schemes, especially in terms of the ergodic capacity.