Power allocation scheme for multicell interference coordination in OFDMA systems

Abstract

To coordinate inter-cell interference, a multicell adaptive power allocation scheme is proposed for downlink orthogonal frequency division multiple access (OFDMA) cellular systems. This scheme uses the difference of the signal to interference plus noise ratio (SINR) between the co-subchannels of adjacent cells to balance SINR for coordinating the transmit power in the co-subchannels. The scheme can improve edge user performance, reduce interference between the co-subchannels of adjacent cells and improve radio resource utility. Simulation results show that the scheme can balance system performance and ensure system throughput.

Keywords

orthogonal frequency division multiple access (OFDMA) / power allocation / inter-cell interference / interference coordination

References

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Acknowledgements

This work was supported by the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20040013010).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg