Title :
Water filling for uncoded communications over parallel Gaussian channels
Author :
Costa, Max H M ; Gomes, Fabio A L
Author_Institution :
FEEC, Unicamp, Campinas, Brazil
fDate :
27 June-2 July 2004
Abstract :
We investigate the problem of allocating power to send uncoded information over parallel Gaussian channels. We examine the reason why regular "water-filling" does not work in the uncoded case, and show that a modification of the noise level of each subchannel lets "water-filling" work in this case.
Keywords :
Gaussian channels; Gaussian channel; noise level; power allocation; uncoded communication; water filling; Additive white noise; Error probability; Filling; Frequency division multiplexing; Gaussian channels; Gaussian noise; MIMO; Noise level; OFDM; Power system modeling;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365252
