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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2009, Vol. 10 Issue (2): 271-278    DOI: 10.1631/jzus.A0820362
Electrical & Electronic Engineering     
A cross-layer approach to enable multipacket transmission in MIMO-SDMA based WLAN
Sheng-bo CHEN, Wei CHEN, Wei-lan HUANG, Li-jun ZHAI, Xu-ming LIU
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China; Nokia Research Center, Beijing 100176, China
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Abstract  We propose a medium access control (MAC) protocol for uplink transmissions in wireless local area networks (WLANs), where both stations and access points (APs) are equipped with multiple antennas. The protocol solves some common problems in utilizing multiple input multiple output (MIMO) under the 802.11 protocol, e.g., how to deploy preamble (training sequence) used for channel estimation and how to enable simultaneous data transmissions, and facilitates two simultaneous uplink data transmissions via a cross-layer approach. Furthermore, we develop a 3D discrete-time Markov model to analyze the performance of the proposed WLAN scheme. The analytical results are verified by simulation, and numerical results show that the system throughput can be significantly improved by our proposed scheme as compared with conventional schemes.

Key words： Multiple input multiple output (MIMO)      Medium access control (MAC)      Cross-layer design     
Received: 10 May 2008     
CLC:  TN919.8  
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Sheng-bo CHEN
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Xu-ming LIU
Cite this article:

Sheng-bo CHEN, Wei CHEN, Wei-lan HUANG, Li-jun ZHAI, Xu-ming LIU. A cross-layer approach to enable multipacket transmission in MIMO-SDMA based WLAN. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2009, 10(2): 271-278.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0820362     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2009/V10/I2/271

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