Title :
Energy efficiency analysis of a multichannel wireless access protocol
Author :
Chockalingam, A. ; Xu, Weiping ; Zorzi, Michele ; Milstein, Laurence B.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
When user terminals powered by a finite battery source are used for wireless communications, energy constraints are likely to influence the design/choice of media access protocols. We analyze the energy efficiency of a multichannel wireless access protocol using a finite energy source in a mobile radio environment. The average number of correctly transmitted packets for a given amount of allocated energy is used as the appropriate energy efficiency metric. The mobile radio channel itself is characterized by a correlated Rayleigh fading process, whose memory parameters depend on the speed of the user terminal, the data rate, and the physics of the channel. We show that the protocol which recovers erroneous data packets through retransmission is more energy efficient at low channel correlations
Keywords :
Markov processes; Rayleigh channels; access protocols; correlation methods; energy conservation; land mobile radio; multipath channels; packet radio networks; battery source; channel physics; correctly transmitted packets; correlated Rayleigh fading; data rate; energy constraints; energy efficiency analysis; erroneous data packet recovery; finite energy source; first-order Markov chain; low channel correlations; memory parameters; mobile radio channel; mobile radio environment; multichannel wireless access protocol; multipath fading; retransmission; user terminals; wireless communications; Access protocols; Delay effects; Energy efficiency; Fading; Performance analysis; Research initiatives; State-space methods; Steady-state; Throughput; Wireless application protocol;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-4872-9
DOI :
10.1109/PIMRC.1998.731345
