An MBS-Assisted Femtocell Transmit Power Control Scheme with Mobile User QoS Guarantee in 2-Tier Heterogeneous Femtocell Networks

Figure 9

MU data rate achieved by FTPA and Approx versus the FBS deployment density under different 𝛿_𝑝.

(a) 𝛿_𝑝=20 dB

(b) 𝛿_𝑝=15 dB

(c) 𝛿_𝑝=10 dB