论文信息 - Cross-layer Scheduling and Dynamic Resource Allocation for Downlink Multiuser MIMO Systems with Limited Feedback

Cross-layer Scheduling and Dynamic Resource Allocation for Downlink Multiuser MIMO Systems with Limited Feedback

In this paper, we present a cross-layer scheduling and dynamic resource allocation (CLSDRA) strategy for downlink multiuser multiple-input multiple-output (MIMO) systems with limited feedback. Based on the instantaneous partial channel state information (CSI) from physical (PHY) layer and the queue state information (QSI) from media access control (MAC) layer, the proposed scheme schedules packets and allocates resources such as channel, bit and power to the scheduled users to maximize the utility function which sums the product of each scheduled user's delay requirement, head of line (HOL) packet waiting time, queue length and data rate. Simulation results demonstrate that our scheme outperforms the existing single-layer resource allocation or scheduling algorithms in balancing the total system throughput and the packet drop rate because the proposed strategy could utilize the QSI and the partial CSI simultaneously.

Chong-xian Zhong | Lu-xi Yang

[1] Matthew Andrews,et al. Providing quality of service over a shared wireless link , 2001, IEEE Commun. Mag..

[2] Emre Telatar,et al. Capacity of Multi-antenna Gaussian Channels , 1999, Eur. Trans. Telecommun..

[3] Vincent K. N. Lau,et al. Optimal downlink space-time scheduling design with convex utility functions-multiple-antenna systems with orthogonal spatial multiplexing , 2005, IEEE Transactions on Vehicular Technology.

[4] Babak Hassibi,et al. On the capacity of MIMO broadcast channels with partial side information , 2005, IEEE Transactions on Information Theory.

[5] R. Berezdivin,et al. Next-generation wireless communications concepts and technologies , 2002, IEEE Commun. Mag..

[6] Khaled Ben Letaief,et al. Dynamic multiuser resource allocation and adaptation for wireless systems , 2006, IEEE Wireless Communications.

[7] Martin Haardt,et al. Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels , 2004, IEEE Transactions on Signal Processing.

[8] Mats Bengtsson,et al. Cross-layer scheduling for multi-user MIMO systems , 2006, IEEE Communications Magazine.

[9] Leandros Tassiulas,et al. Cross-Layer Adaptive Techniques for Throughput Enhancement in Wireless OFDM-Based Networks , 2006, IEEE/ACM Transactions on Networking.