From: Capacity analysis of LTE-Advanced HetNets with reduced power subframes and range expansion
Symbol | Description |
---|---|
λ,λ^{′},λ_{u} | Intensities of the MBS, PBS, and UE nodes,respectively |
${P}_{\text{tx}},{P}_{\text{tx}}^{\prime}$ | Maximum transmit powers of MBS and PBS,respectively |
K,K^{′} | Signal attenuation factors that account forgeometrical parameters such as the transmitter/receiver antenna heights of the MBS and the PBS, respectively |
P,P^{′} | Effective maximum transmit powers of MBSand PBS, respectively, after considering theattenuation factors K and K^{′} |
α | Power reduction factor for MBS during thetransmission of CSFs |
β | Duty cycle for the transmission of USFs |
τ | Range expansion bias for picocells |
ρ,ρ^{′} | Scheduling thresholds for MUEs and PUEs,respectively |
r,r^{′} | Distances of a UE from its MOI and POI,respectively |
δ | Path-loss exponent |
S(r),S^{′}(r^{′}) | RSRPs from the MOI and the POI, respectively |
H,H^{′} | Exponentially distributed random variablesthat account for Rayleigh fading for thetransmissions from MBS and PBS, respectively |
Z,Z^{′} | Total interference power at a UE during USFand CSF, respectively |
γ,γ^{′} | SIRs from MOI and POI, respectively, duringUSFs |
${\gamma}_{\text{csf}},{\gamma}_{\text{csf}}^{\prime}$ | SIRs from MOI and POI, respectively, duringCSFs |
${N}_{\text{usf}},{N}_{\text{usf}}^{\prime},{N}_{\text{csf}},{N}_{\text{csf}}^{\prime}$ | Mean number of USF-MUEs, USF-PUEs,CSF-MUEs, and CSF-PUEs, respectively, in a cell |
${C}_{\text{usf}},{C}_{\text{usf}}^{\prime},{C}_{\text{csf}},{C}_{\text{csf}}^{\prime}$ | Mean aggregate SEs for USF-MUEs, USF-PUEs,CSF-MUEs, and CSF-PUEs, respectively, in a cell |
${C}_{\text{u,usf}},{C}_{\text{u,usf}}^{\prime},{C}_{\text{u,csf}},{C}_{\text{u,csf}}^{\prime}$ | Per-user SEs for USF-MUEs, USF-PUEs,CSF-MUEs, and CSF-PUEs, respectively, in a cell |
C_{sum},C_{log} | Sum of capacities and sum of log capacities ina cell |