TY - GEN
T1 - Generalized mercury/waterfilling for multiple-input multiple-output channels
AU - Pérez-Cruz, Fernando
AU - Rodrigues, Miguel R.D.
AU - Verdú, Sergio
PY - 2007
Y1 - 2007
N2 - We determine the power-allocation policy that maximizes the mutual information for general multiple-input multiple-output Gaussian channels with arbitrary input distributions, by capitalizing on the recent relationship between mutual information and minimum mean squared error (MMSE). In this context, we put forth a novel interpretation of the optimal power-allocation procedure that generalizes the mercury/waterfilling algorithm, previously proposed for parallel non-interfering channels. In this generalization the mercury level accounts for the sub-optimal (non-Gaussian) input distribution and the interferences between inputs.
AB - We determine the power-allocation policy that maximizes the mutual information for general multiple-input multiple-output Gaussian channels with arbitrary input distributions, by capitalizing on the recent relationship between mutual information and minimum mean squared error (MMSE). In this context, we put forth a novel interpretation of the optimal power-allocation procedure that generalizes the mercury/waterfilling algorithm, previously proposed for parallel non-interfering channels. In this generalization the mercury level accounts for the sub-optimal (non-Gaussian) input distribution and the interferences between inputs.
KW - MIMO
KW - MMSE
KW - Mutual Information
KW - Optimum Power Allocation
KW - Waterfilling
UR - http://www.scopus.com/inward/record.url?scp=84940646751&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940646751&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84940646751
T3 - 45th Annual Allerton Conference on Communication, Control, and Computing 2007
SP - 198
EP - 205
BT - 45th Annual Allerton Conference on Communication, Control, and Computing 2007
PB - University of Illinois at Urbana-Champaign, Coordinated Science Laboratory and Department of Computer and Electrical Engineering
T2 - 45th Annual Allerton Conference on Communication, Control, and Computing 2007
Y2 - 26 September 2007 through 28 September 2007
ER -