Energy Efficiency of Error Control for High Data Rate WPAN

Authors:
Mauro Sanctis;Simone Quaglieri;Ernestina Cianca;Marina Ruggieri
Affiliations:
Department of Electronics Engineering, University of Rome "Tor Vergata'', Rome, Italy 00133;Department of Electronics Engineering, University of Rome "Tor Vergata'', Rome, Italy 00133;Department of Electronics Engineering, University of Rome "Tor Vergata'', Rome, Italy 00133;Department of Electronics Engineering, University of Rome "Tor Vergata'', Rome, Italy 00133
Venue:
Wireless Personal Communications: An International Journal
Year:
2005

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Abstract

This paper addresses the issue of energy efficiency for error control mechanisms over WPAN systems. An analytical formulation has been developed to study the trade-off between link layer performance and energy consumption for two types of error control schemes: pure ARQ and type II hybrid ARQ protocol. An MC-CDMA-based system is considered. First of all, the analysis has been used to compare different error recovery schemes from the energy efficiency point of view. Moreover, it has been found that, for any channel conditions, there exists an optimal value of the transmit power that maximizes the energy efficiency. The paper also shows how this result can be used to design the power control of an energy efficient CDMA-based communication system.