Table 1 Summery of symbols for downlink and uplink
From: Optimum energy harvesting model for bidirectional cognitive radio networks
Description | Symbol | Description | Symbol |
|---|---|---|---|
Transmission power of BS | \(P_{BS}\) | Transmission power of MUE | \(P-P_{s}\) |
Transmit signal of BS | \(x_{BS}\) | Transmit signal of MUE | \(x_{\mathrm{{MUE}}}\) |
Channel gain from BS \(\Rightarrow\) MUE | \(g_{BS}\) | Channel gain from MUE \(\Rightarrow\) BS | \(g_{\mathrm{{MUE}}}\) |
Transmission power of PT | \(P_{p}\) | Transmit signal of PT | \(x_{p}\) |
Distance from PT\(\Rightarrow\) MUE | \(d_{p}\) | Distance from PT\(\Rightarrow\) BS | \(d_{k}\) |
Distance from BS \(\Rightarrow\) MUE | \(d_{s}\) | Distance from MUE \(\Rightarrow\) BS | \(d_{s}\) |
Channel gain between PT \(\Rightarrow\) MUE | \(h_{p1}\) | Channel gain between PT\(\Rightarrow\) BS | \(h_{p2}\) |
Antenna noise at MUE | \(n_{a1}\) | Antenna noise at BS | \(n_{a2}\) |
Baseband conversion noise | \(n_{conv}\) | Pathloss exponent | \(\alpha\) |
Time allocation factor | \(\tau\) | Constant harvesting power | P |
Circuit power consumption of BS | \(P_{\mathrm{{cir}}}^{BS}\) | Circuit power consumption of MUE | \(P_{\mathrm{{cir}}}^{MUE}\) |