Title :
Maximizing bits-per-Joule capacity over parallel channels
Author :
Buzzi, Stefano ; Colavolpe, Giulio
Author_Institution :
DAEIMI, Univ. of Cassino, Cassino, Italy
Abstract :
Bits-per-Joule capacity is measured in [bit/Joule] and denotes the maximum number of bits that can be reliably transmitted on a noisy channel for each Joule of energy used for transmission. In this paper properties of the bits-per-Joule capacity of the bandlimited additive white Gaussian noise (AWGN) channel are discussed. Then, for the case of independent parallel Gaussian channels, the problem of optimal power allocation maximizing the energy efficiency is considered, and comparisons with the classical rate-maximizing waterfilling strategy are given.
Keywords :
AWGN channels; wireless channels; bandlimited AWGN channel; bandlimited additive white Gaussian noise channel; bits-per-joule capacity maximization; energy efficiency; independent parallel Gaussian channel; optimal power allocation; parallel channel; rate-maximizing waterfllling strategy; AWGN channels; Channel capacity; Green products; Reliability; Resource management; Wireless networks; Energy-efficient communications; Shannon capacity; bits-per-Joule capacity; parallel channels; waterfilling;
Conference_Titel :
Online Conference on Green Communications (GreenCom), 2011 IEEE
Conference_Location :
New York, NY
Print_ISBN :
978-1-4244-9518-4
DOI :
10.1109/GreenCom.2011.6082513