Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (10): 36-41,46.doi: 10.3969/j.issn.1000-565X.2010.10.007

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

MAC Protocol for Ad hoc Networks Using Multi-Packet Reception of MIMO System

Yao Zhi-qiang  Yin Jun-xun   

  1. School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2010-01-19 Revised:2010-06-25 Online:2010-10-25 Published:2010-10-25
  • Contact: 姚志强（1975-），男，博士，湘潭大学副教授，主要从事宽带无线接入基带信号处理和Adhoc网络MAC协议、MIMO技术等的研究． E-mail:yaozhiq@tom．com
  • About author:姚志强（1975-），男，博士，湘潭大学副教授，主要从事宽带无线接入基带信号处理和Adhoc网络MAC协议、MIMO技术等的研究．
  • Supported by:

    国家自然科学基金资助项目（60672065）

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Abstract:

As the traditional medium access control（MAC） protocols allow only one pair of nodes to communicate in a neighborhood of distributed single-channel Ad hoc networks,serious collision,low throughput and large delay may occur in this kind of network.In order to solve these problems,a novel MAC protocol based on the multi-packet reception（MPR） of multiple-input multiple-output（MIMO） system is proposed.In this protocol,both the binary-backoff and the share-backoff mechanisms are used to reserve and share the physical channels,thus realizing the multipoint-to-point communication in distributed single-channel Ad hoc networks and significantly improving the network throughput.A mathematical model of the normalized saturation throughput is also established for the new protocol.Theoretical and simulated results indicate that the proposed protocol outperforms the CSMA/CA（k） protocol based on the Bell Laboratories layered space-time（BLAST） coding in terms of network throughput.

Key words: multiple-input multiple-output system, multi-packet reception, Ad hoc networks, medium access control