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Cross-layer performance analysis of joint rate and power adaptation schemes with multiple-user contention in Nakagami fading channels

Published: 03 July 2006 Publication History

Abstract

Adaptively adjusting transmission rate and power to concurrently enhance goodput and save energy is an important issue in the wireless local area network (WLAN). However, goodput enhancement and energy saving are two contradictory goals, since high data rate usually requires high transmission power to meet the bit-error-rate (BER) requirement. To achieve the tradeoff between energy efficiency and goodput, therefore, we suggest a fast channel-driven rate and power adaptation (CDRPA) algorithm. Furthermore, we develop a physical (PHY)/medium access control (MAC) cross-layer analytical method to evaluate goodput and energy efficiency, incorporating the impacts of Nakagami fading channel and the carrier sense multiple access (CSMA) MAC protocol. This paper compares two adaptation schemes. The power-first scheme first selects the transmission power and then the data rate, aiming at energy saving. On the contrary, the rate-first scheme first selects the data rate and then the transmission power, aiming to enhance goodput. Numerical results show that the power-first scheme achieves better energy efficiency. However, the rate-first CDRPA scheme can indeed boost goodput, while maintaining comparable energy efficiency as the power-first scheme.

References

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Cited By

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  • (2011)Effect of Nakagami-m fading on the QoE performance of VoIP in wireless mesh networksProceedings of the 2011 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks10.1109/WoWMoM.2011.5986174(1-6)Online publication date: 20-Jun-2011
  • (2009)Cross-layer optimization of multipoint message broadcast in MANETsProceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference10.5555/1688345.1688722(2144-2149)Online publication date: 5-Apr-2009
  • (2009)Cross-Layer Optimization of Multipoint Message Broadcast in MANETs2009 IEEE Wireless Communications and Networking Conference10.1109/WCNC.2009.4917654(1-6)Online publication date: Apr-2009

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  1. Cross-layer performance analysis of joint rate and power adaptation schemes with multiple-user contention in Nakagami fading channels

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      cover image ACM Conferences
      IWCMC '06: Proceedings of the 2006 international conference on Wireless communications and mobile computing
      July 2006
      2006 pages
      ISBN:1595933069
      DOI:10.1145/1143549
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      Published: 03 July 2006

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      1. PHY/MAC cross-layer analysis
      2. joint rate and power adaptation

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      • (2011)Effect of Nakagami-m fading on the QoE performance of VoIP in wireless mesh networksProceedings of the 2011 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks10.1109/WoWMoM.2011.5986174(1-6)Online publication date: 20-Jun-2011
      • (2009)Cross-layer optimization of multipoint message broadcast in MANETsProceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference10.5555/1688345.1688722(2144-2149)Online publication date: 5-Apr-2009
      • (2009)Cross-Layer Optimization of Multipoint Message Broadcast in MANETs2009 IEEE Wireless Communications and Networking Conference10.1109/WCNC.2009.4917654(1-6)Online publication date: Apr-2009

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