TY - GEN
T1 - Sparse Power Control for Downlink Cell-Free Massive MIMO Systems with Limited Backhaul Capacities
AU - Wang, Jionghui
AU - Wang, Bin
AU - Fang, Jun
AU - Li, Hongbin
N1 - Publisher Copyright: © 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - We consider the problem of max-min power control for downlink cell-free (CF) massive MIMO systems with explicit capacity constraints. Some approximation and optimization techniques are introduced/proposed to convert this challenging problem into an amiable one, which can be efficiently solved via a computationally efficient BCD-ADMM (block coordinate descent-alternating direction method of multipliers) algorithm. The proposed method renders a sparse power control solution with a large percentage of zero power coefficients, and thus can automatically achieve user-centric clustering. Simulation results show that with a reasonably large backhaul capacity, the proposed method can attain a rate which is about 75% of the rate reported in [1] which assumes an infinite backhaul capacity.
AB - We consider the problem of max-min power control for downlink cell-free (CF) massive MIMO systems with explicit capacity constraints. Some approximation and optimization techniques are introduced/proposed to convert this challenging problem into an amiable one, which can be efficiently solved via a computationally efficient BCD-ADMM (block coordinate descent-alternating direction method of multipliers) algorithm. The proposed method renders a sparse power control solution with a large percentage of zero power coefficients, and thus can automatically achieve user-centric clustering. Simulation results show that with a reasonably large backhaul capacity, the proposed method can attain a rate which is about 75% of the rate reported in [1] which assumes an infinite backhaul capacity.
KW - Cell-free massive MIMO
KW - backhaul capacity constraint
KW - block coordinate descent
KW - sparse power control
UR - https://www.scopus.com/pages/publications/85127044269
UR - https://www.scopus.com/pages/publications/85127044269#tab=citedBy
U2 - 10.1109/IEEECONF53345.2021.9723238
DO - 10.1109/IEEECONF53345.2021.9723238
M3 - Conference contribution
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1459
EP - 1463
BT - Conference Record of the 55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021
A2 - Matthews, Michael B.
PB - IEEE Computer Society
T2 - 55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021
Y2 - 31 October 2021 through 3 November 2021
ER -