From: Joint resource allocations for remote radio head deployments with coherent transmitter
Notations | Explanation |
---|---|
M | The total RRH port number |
K | The total user number |
N | The total subcarrier number |
W | The system bandwidth |
m, n, k | The index of RRH port, subcarrier and user, respectively |
l k [m, n] | The large-scale channel fading |
h k [m, n] | The channel impulse response |
ρ k [n] | The subcarrier assignment indicator |
| A set of RRH ports for the transmission of a subcarrier |
P T | The total system power |
P | The power limit of each RRH port |
y k [n] | The receiving signal |
x k [n] | The unitary transmitted symbol |
z k [n] | The additive Gaussian noise |
N 0 | The noise power |
ω k [n] | The transmit weight vector |
γ k [n] | The receiving SNR |
G k [m, n] | The combined channel gain |
C k [n] | The spectrum efficiency |
| The Lagrangian function |
g(⋅) | The Lagrangian dual function |
α, β, λ | The Lagrangian multipliers |
Δα, Δβ, Δλ | The sub-gradients of Lagrangian multipliers |
| The dual decomposition function |
η | The energy efficiency |
μ k [n] | The power-scaling coefficient |