Abstract-The radio resource allocation problem is studied, aiming to jointly optimize the energy efficiency (EE) and spectral efficiency (SE) of downlink OFDMA multi-cell networks. Different from existing works on either EE or SE optimization, a novel EE-SE tradeoff (EST) metric, which can capture both the EST relation and the individual cells' preferences for EE or SE performance, is introduced as the utility function for each base station (BS). Then the joint EE-SE optimization problem is formulated, and an iterative subchannel allocation and power allocation algorithm is proposed. Numerical results show that the proposed algorithm can exploit the EST relation flexibly and optimize the EE and SE simultaneously to meet diverse EE and SE preferences of individual cells.
Another interesting contribution was provided in REF , where a multi-cell OFDMA network was considered, and a novel EST metric capable of simultaneously capturing both the EST relationship and the individual cells' preferences for the EE or SE performance, was introduced as the utility function for each base station (BS).
Flexible Resource Allocation for Joint Optimization of Energy and Spectral Efficiency in OFDMA Multi-Cell Networks
IEEE Communications Letters
IEEE Communications Letters
Computer Science