A cross-layer approach to enable multipacket transmission in MIMO-SDMA based WLAN

作者：Chen Sheng bo; Chen Wei^*; Huang Wei lan; Zhai Li jun; Liu Xu ming

来源：Journal of Zhejiang University-Science A(Applied Physics & Engineering), 2009, 10(2): 271-278.

DOI：10.1631/jzus.A0820362

• Multiple input multiple output (MIMO)
• Medium access control (MAC)
• Cross-layer design

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.

• 出版日期2009-2
• 单位清华大学