Table 1 List of major symbols used in this papers
From: A novel joint transmit beamforming and receive time switching strategy for MISO SWIPT system
Symbol | Description |
|---|---|
M | Number of users (co-channel receiving terminal) |
N t | Number of base station transmitting antenna |
s i | Information of the ith user, si∼CN(0,1) |
Slot 1 | Information slot |
Slot 2 | Energy slot |
v i | Information beamforming vector for the ith user, |
\(\mathbf {v} \in {\mathbb {C}^{N_{t} \times 1}}\) | |
w i | Energy beamforming vector for the ith user, |
\(\mathbf {w} \in {\mathbb {C}^{N_{t} \times 1}}\) | |
x i | The information of antenna i |
h k | Channel gain vector for the kth user, \(\mathbf {h} \in {\mathbb {C}^{N_{t} \times 1}}\) |
W | Bandwidth |
n k | Antenna noise for the kth user, |
\(n_{k}\sim CN\left (0,\sigma ^{2}_{k}\right)\) | |
z k | Demodulation noise for the kth user, |
\(z_{k}\sim CN\left (0,\delta ^{2}_{k}\right)\) | |
α | Time switching ratio, 0≤α≤1 |
ζ k | Energy conversion efficiency |
γ k | Minimum SINR threshold of IR |
e k | Minimum energy collection threshold of ER |
P | Maximum transmission power threshold of |
base station |