Computationally efficient optimal power allocation algorithm for multicarrier communication systems

We present an optimal, efficient power allocation algorithm for discrete multitone modulation (DMT). Using efficient lookup table searches and a Lagrange multiplier bisection search, our algorithm converges much faster to the optimal solution than existing techniques and can replace the use of subop...

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Bibliographic Details
Published in1998 IEEE International Conference on Communications Vol. 2; pp. 1018 - 1022 vol.2
Main Authors Krongold, B.S., Ramchandran, K., Jones, D.L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1998
Subjects
AWGN
Computational complexity
Copper
Data communication
Image coding
Intersymbol interference
Lagrangian functions
OFDM modulation
Quadrature amplitude modulation
Table lookup
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Summary:We present an optimal, efficient power allocation algorithm for discrete multitone modulation (DMT). Using efficient lookup table searches and a Lagrange multiplier bisection search, our algorithm converges much faster to the optimal solution than existing techniques and can replace the use of suboptimal methods because of its low computational complexity. A fast algorithm is developed and a pseudocode is provided.
ISBN:0780347889
9780780347885
DOI:10.1109/ICC.1998.685166