Information Processing and Wireless Energy Harvesting in Two-Way Amplify-and-Forward Relay Networks

Dynamic Asymmetric Power Splitting Scheme for SWIPT-Based Two-Way Multiplicative AF Relaying

“…We can see that the DAPS scheme is superior to the SSPS scheme in terms of outage performance, owing to the fact that the DAPS provides more flexibility and makes full use of the instantaneous CSI. Another observation is that the outage performance of DAPS with Algorithm 1 is 7 If there exist more than one pair of ρ i and ρī achieving the maximum value of G(q s−1 , ρ s A , ρ s B ), the pair of ρ i and ρī with the smallest values are selected as the optimal solution to the subtraction function. Fig.…”

“…To date, several studies on amplify-and-forward TWRNs (AF-TWRNs) with SWIPT have been reported [4], [7]- [11]. Chen et al [4] and Shah et al [7] investigated the power splitting (PS) and time switching (TS) schemes for two-step AF-TWRNs, respectively, and derived analytical expressions for the outage probability and throughput. In [8], a jointly optimized power allocation and relay selection scheme was proposed to minimize the outage probability.…”

“…If i = A,ī = B; if i = B,ī = A 5. In this work, since our main focus is on the novel DAPS scheme design, for analytical tractability, we consider the linear EH model[4],[7]-[11],[16]. In addition, the non-linear EH models[17],[18] can be decomposed into piecewise linear EH models, where each segment of the EH model is linear and results obtained based on linear EH models can be applied to each segment[18].…”

Dynamic Wireless Energy Harvesting and Optimal Distribution in Multipair DF Relay Network with Nonlinear Energy Conversion Model

“…(18) for all relay-to-destination channels (i.e. = 1, 2, ⋅ ⋅ ⋅ , ) do (19) if ≤ * then (20) Mark it as flagged negative (21) else (22) Mark it as flagged positive (23) set = * (24) end if (25) end for (26) Distributêby allocating power to all flagged positive channels according to ((23) & (24)) (27) end procedure (28) end while Algorithm 1: Energy harvesting and transmit power distribution. power for that particular signal, in order to forward it to its corresponding destination.…”

“…Because of the distinct features of the two relaying protocols, the throughput analysis of decode-and-forward (DF) and AF relaying networks is different under energy harvesting constraints [18]. The throughput analysis of a PSR, TSR, and a combined time-power switching relaying (TPSR) [19] protocol for two-way AF relay network was studied in [20,21], in which the results showed that, at high SNR and low transmission rate, TPSR protocol outperforms TSR and PSR. On the other hand, at high transmission rates and low SNR, the TSR protocol outperforms the TPSR and PSR protocols.…”