A Downlink Dynamic Resource Allocation Scheme for Multi-cell OFDMA System

A Downlink radio resource allocation scheme based on ICI coordination for multi-cell OFDMA system is proposed. By dynamically determining frequency reuse factor, data rate of the users who have bad channel quality is increased. In order to reduce the packet delay of the users with high average packet arrival rate, the average packet arrival rate is used as a factor of the utility function in scheduling algorithm. Simulation results show that the proposed scheme yields better performance for data services in fast fading channel.

[1]  Xiaolin Zhang,et al.  Optimal Fractional Frequency Reuse in OFDMA Based Wireless Networks , 2008, 2008 4th International Conference on Wireless Communications, Networking and Mobile Computing.

[2]  Xu Ning,et al.  A Downlink Radio Resource Allocation Algorithm Based on Inter-Cell Interference Mitigation for Multi-Cell OFDMA System , 2006, 2006 First International Conference on Communications and Networking in China.

[3]  Ying Wang,et al.  Subcarrier and power allocation algorithm based on inter-cell interference mitigation for OFDMA system , 2007 .

[4]  Hoon Kim,et al.  A proportional fair scheduling for multicarrier transmission systems , 2004, IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004.

[5]  Jing Xu,et al.  Inter-cell interference coordination based on softer frequency reuse in OFDMA cellular systems , 2008, 2008 International Conference on Neural Networks and Signal Processing.