Energy-Efficient Resource Allocation in OFDMA Systems

摘要: In this thesis, a resource allocation problem in OFDMA is studied for the energy efficiency of wireless network. The objective to minimize total consumption which includes transmission consumption, and circuit at both transmitter receiver with required per user’s rate constraint. For solution, heuristic algorithm low computational complexity suboptimal solution proposed, developed two steps an increasing order complexity. Besides, bounding scheme based on model linearization formulated nonlinear system also proposed give lower upper bounds small- large-scale network further performance evaluation, while implemented exhaustive search only capable provide optimal small-scale instance evaluation. Numerical results show that proposal can achieve near-optimal applicable even networks, from are very tight networks.