Joint user association and energy-efficient resource allocation with minimum-rate constraints in two-tier HetNets
2020 ◽
Vol 4
(4)
◽
pp. 1048-1060
2014 ◽
Vol 63
(5)
◽
pp. 2139-2150
◽
2015 ◽
Vol 64
(1)
◽
pp. 185-197
◽