Table 1 Common symbols used in the article
From: Simultaneous harvest-and-transmit ambient backscatter communications under Rayleigh fading
Symbol | Definition |
|---|---|
E h | Harvested energy |
E b | Energy consumed for backscatter communication |
E s | Energy consumed for spectrum sensing |
E m | Energy consumed by micro-controller/ sensor |
α | Compressive sensing duration |
ρ | Power-splitting factor |
β | Reflection coefficient of the backscatter devices |
θ | Path loss exponent |
N 0 | AWGN variance |
η | Energy conversion efficiency |
M | Number of wideband signals |
e | Energy consumed for each sample |
φ | Threshold of required data rate |
ψ | Energy threshold for operation of the backscatter device |
f | Sampling rate |
P b | Amount of circuit power consumed during backscattering |