From: Uncertainty area-based interference mitigation for cognitive radio
S_{ T }: | Set of all transmitting SNs |
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S_{ P }: | Set of all PAs |
i: | Any given transmitting SN (i ∈ S_{ T }) |
j: | Any given receiving SN |
p: | Any given PA (p ∈ S_{ P }) |
G_{ T } (i): | i's antenna gain |
G_{ R } (j): | j 's antenna gain |
θ (i)/θ (j): | i's/j's beamwidth |
d (i,p): | Distance between i and p |
d_{0}: | Far-field distance, d(i,p) ≥ d_{0} |
α: | Path loss exponent |
C (i,p): | Random slow fading between i and p |
σ_{ C }: | Slow fading standard deviation |
P_{ T }(i): | i's transmission power |
r_{INT} (i,p): | Interference radius from i to p |
r_{INT,e}(i,p): | MANET estimate of r_{INT} (i,p) |
I_{ R }(i,p): | Received interference from i to p |
I_{R,e}(i,p): | MANET estimate of I_{ R }(i,p) |
P_{MNZ}: | Minimum non-zero power threshold |
r_{ MNZ }(i): | Distance from i to reach P_{ MNZ } |
I_{ A }(p): | p's aggregate interference |
I_{A,e}(p): | MANET estimate of I_{ A }(p) |
I_{A,o}(p): | p's aggregate interference offset |
μ_{ x }(p): | MANET estimate of p's mean x location |
μ_{ y }(p): | MANET estimate of p's mean y location |
σ_{ x }(p): | MANET estimate of p's std x location |
σ_{ y }(p): | MANET estimate of p's std y location |
λ (p): | p's UA inclination |
Ω_{UC} (p): | p's Uncertainty coefficient |
A_{UC} (p): | p's UA semimajor axis |
B _{UC} (p): | p's UA semiminor axis |
I_{A,UM}(p): | I_{ A }(p)'s Underestimation margin |
E_{out,UM} (p): | I_{A,UM}(p)'s outage event |
P_{out,UM} (p): | Occurrence probability of E_{out,UM} (p) |
η_{UM} (p): | Max. acceptable value of P_{out,UM} (p) |
I_{A,OM}: | I_{ A }(SP)'s Overestimation margin |
E_{out,OM} (p): | I_{A,OM}'s outage event for p |
P_{out,OM} (p): | Occurrence probability of E_{out,OM} (p) |
η_{OM}: | Max. acceptable value of P_{out,OM} (S_{ P }) |