Table 2 The direction finding procedure for updating pk
From: A full-duplex SWIPT system with self-energy recycling to minimize energy consumption
If | \(\tau _{1}^{\left (k \right)} + \tau _{2}^{\left (k \right)} = {\tau _{\min }},{j^{*}} = \mathop {\max }\limits _{j} \frac {{\partial {E_{T}}}}{{\partial {\tau _{j}}}},\,{\mathrm {where\, }}{j^{*}} \in \left \{ {1,2} \right \}\) |
| Â | \({i^{*}} = \mathop {\min }\limits _{i} \frac {{\partial {E_{T}}}}{{\partial {\tau _{i}}}},{\text {where}}\,i \in \left \{ {1,2} \right \}\) |
else | Â |
| Â | \({j^{*}} = \mathop {\max }\limits _{j} \frac {{\partial {E_{T}}}}{{\partial {\tau _{j}}}},\,{\mathrm {where\, }}j \in \left [ {1,4} \right ]\) |
| Â | \({i^{*}} = \mathop {\min }\limits _{i} \frac {{\partial {E_{T}}}}{{\partial {\tau _{i}}}},{\mathrm {where\, }}i \in \left [ {1,4} \right ]\) |
end | Â |