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Research Letters in Communications
Volume 2008, Article ID 730610, 5 pages
Research Letter

A High-Throughput Random Access Protocol for Multiuser MIMO Systems

1Shanghai Research Center for Wireless Communications, Shanghai Institute of Microsystem and Information Technology, Shanghai 200050, China
2Simula Research Laboratory, 1325 Lysaker, Norway

Received 14 March 2008; Accepted 28 April 2008

Academic Editor: Edward K. S. Au

Copyright © 2008 Haiyou Guo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We propose a high-throughput random access protocol for 2×2 multiuser multiple-input multiple-output (MIMO) systems. The cross-layer mechanism utilizes the packets combining technique to exploit the advantages of both spatial multiplexing and multipacket reception. Analytical result indicates that the proposed scheme achieves 0.669 per spatial degree of freedom in stable throughput, which is much higher than those in the existed studies.