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Utility theory based subcarrier allocation algorithms for OFDMA systems are discussed in this paper. Two suboptimal subcarrier allocation algorithms (UPF and NBS) under the utility proportional fairness criterion and Nash bargaining solution criterion are given, which both consider the tradeoff between utility fairness of users and system capacity. Furthermore, compared with rate proportional fairness...
An adaptive resource allocation scheme is proposed for regenerative relay-based orthogonal frequency division multiplexing access systems. This scheme allocates subchannels to guarantee fairness between users, and also saves energy by minimising the transmission power. The subchannel allocation for data rate fairness is considered between direct link users and relay stations in the first time subslot...
The power allocation problem with co-channel interference is studied in multi-cell OFDMA cellular relay systems. Based on non-cooperative game theory and using a two-hop data rate balance, a distributed multi-cell power allocation (DMPA) algorithm is proposed, which reduces the transmission power cost and improves the system throughput. The non-cooperative power allocation game model is given in the...
In cooperation relay system, two relay stations transmit cooperatively for the relay link users, and the relay link users receive signal by maximal ratio combining. The traditional multiuser scheduling algorithms, Max C/I algorithm for system throughput maximization and proportional fairness (PF) algorithm for user fairness, are extended into the DF cooperative relay systems. The simulation results...
In this paper, the performance of user fairness of resource allocation is considered in the downlink of relay-based OFDMA cellular systems. In the downlink transparent frame structure, the base stations (BSs) transmit in the first time subslot and the relay stations (RSs) transmit in the second time subslot. A non-cooperative power allocation game is defined for maximizing throughput and reducing...
In multi-cell orthogonal frequency division multiplexing cellular systems, the co-channel interference (CCI) from adjacent cells becomes the dominant interference. Considering the CCI in multiple cells, the optimal solution for data rate maximization is derived from the dual decomposition method. Based on the optimal solution, a simplified uplink distributed power allocation (UDPA) algorithm is proposed...
In this paper, a concept of utility proportional fairness is defined, which achieves fairness of utility for different applications. The optimization problem of utility proportional fairness has been formulated meanwhile the optimal solution is presented. The utility proportional fairness is applied in the orthogonal frequency division multiplexing (OFDM) wireless networks, and the optimal subcarrier...
Radio resource allocation is one of the key technologies in orthogonal frequency division multiplexing (OFDM) cellular systems, where subcarriers and power are schedulable resources. In this paper, we solve the fair resource allocation problem based on the idea of the Nash bargaining solution (NBS) from cooperative game theory, which not only provides the resource allocation of users that are Pareto...
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