Combining space-time coding with power-efficient medium access control for mobile ad-hoc networks

This paper investigates the impact of space-time coding on an IEEE 802.11a based power-efficient medium access control (MAC) protocol in a mobile ad hoc network (MANET). The new MAC protocol, MAC-2, preserves energy by sending information at the minimum power needed to reach the destination with a specified packet error rate (PER). The analysis of space-time coding is conducted in practical environments, including spatial correlations between the fades connecting the transmitter and receiver antenna elements. Combining improvements in the physical layer with the new MAC-2 protocol leads to tremendous savings in power and increase in overall network throughput, while maintaining a basic quality of service.

[1]  Nitin H. Vaidya,et al.  A Power Control MAC Protocol for Ad Hoc Networks , 2002, MobiCom '02.

[2]  Vaduvur Bharghavan,et al.  A power controlled multiple access protocol for wireless packet networks , 2001, Proceedings IEEE INFOCOM 2001. Conference on Computer Communications. Twentieth Annual Joint Conference of the IEEE Computer and Communications Society (Cat. No.01CH37213).

[3]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[4]  Ran Gozali,et al.  Space-Time Codes for High Data Rate Wireless Communications , 2002 .

[5]  Joseph M. Kahn,et al.  Fading correlation and its effect on the capacity of multielement antenna systems , 2000, IEEE Trans. Commun..

[6]  Joseph M. Kahn,et al.  Fading correlation and its effect on the capacity of multi-element antenna systems , 1998, ICUPC '98. IEEE 1998 International Conference on Universal Personal Communications. Conference Proceedings (Cat. No.98TH8384).

[7]  W. C. Jakes,et al.  Microwave Mobile Communications , 1974 .

[8]  Ramy Farha.  MAC-2: A MAC Protocol for Power Control in Mobile Ad Hoc Networks , 2003 .

[9]  Michael R. G. Butler,et al.  Indoor throughput and range improvements using standard compliant AP antenna diversity in IEEE 802.11a and ETSI HIPERLAN/2 , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[10]  A. M. Abdullah,et al.  Wireless lan medium access control (mac) and physical layer (phy) specifications , 1997 .

[11]  Srikanth V. Krishnamurthy,et al.  Power management for throughput enhancement in wireless ad-hoc networks , 2000, 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record.

[12]  Nj Piscataway,et al.  Wireless LAN medium access control (MAC) and physical layer (PHY) specifications , 1996 .

[13]  Cedric Nishan Canagarajah,et al.  Performance of space-time coding with HIPERLAN/2 and IEEE 802.11a WLAN standards on real channels , 2001, IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211).

[14]  Kaveh Pahlavan,et al.  Wireless Information Networks , 1995 .