Cross-Layer Design in Multiuser MIMO-OFDM Systems Based on Space-Time Block Coding for IEEE 802.16
Received date: 2010-09-27
Revised date: 2010-12-31
Online published: 2011-05-26
Cross-layer design of packet scheduling and adaptive resource allocation in multiuser MIMO-OFDM systems are investigated based on space-time block coding (STBC). Different types of service are grouped into four types according to the 802.16 protocol. A two-layer scheduling architecture is then used to shape traffic at medium access (MAC) layer: the first layer schedule packets for different users of the same service type, and the second for different service types. A resource allocation algorithm is proposed to efficiently allocate wireless resource at physical layer according to the scheduling results of the MAC layer and the channel state information. Simulation results show that the proposed algorithm can achieve significant improvement in packet drop rate, packet delay, and system throughput as compared to an existing method.
XIE Wei1;2, YU Jiang2 . Cross-Layer Design in Multiuser MIMO-OFDM Systems Based on Space-Time Block Coding for IEEE 802.16[J]. Journal of Applied Sciences, 2011 , 29(3) : 228 -232 . DOI: 10.3969/j.issn.0255-8297.2011.03.002
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