Optimal Combination of Base Station Densities for Energy-Efficient Two-Tier Heterogeneous Cellular NetworksJan 1, 2013·Dongxu CaoSheng ZhouZhisheng Niu· 0 min read DOI CiteLast updated on Jan 1, 2013AuthorsDongxu CaoPh.D.AuthorsSheng ZhouAssociate ProfessorAuthorsZhisheng NiuProfessor← Optimal combination of base station densities for energy-efficient two-tier heterogeneous cellular networks Jan 1, 2013Optimal power allocation for energy harvesting and power grid coexisting wireless communication systems Jan 1, 2013 →