Abstract
In this paper, a novel user scheduling algorithm for maximizing the sum-rate capacity of inhomogeneous network is investigated. In order to extract the multi-user diversity order and reduce the feedback quantity, selective feedback scheme is adopted. An algorithm of key parameter, the prescribed threshold, is proposed. Numerical simulations show that when adopted the proposed threshold in the inhomogeneous networks, selective feedback scheme can still preserve the majority of the sum-rate capacity of the full back scheme, while the feedback load is significantly reduced.
