Computationally efficient optimal power allocation algorithm for multicarrier communication systems

Author

Krongold, Brian S. ; Ramchandran, Kannan ; Jones, Douglas L.

Author_Institution

Coordinated Sci. Lab., Illinois Univ., Urbana, IL, USA

Volume

2

fYear

1998

fDate

7-11 Jun 1998

Firstpage

1018

Abstract

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

Keywords

computational complexity; convergence of numerical methods; optimisation; quadrature amplitude modulation; table lookup; DMT; Lagrange multiplier bisection search; QAM; computationally efficient algorithm; convergence; discrete multitone modulation; fast algorithm; lookup table searches; low computational complexity; multicarrier communication systems; optimal power allocation algorithm; optimal solution; pseudocode; suboptimal methods; AWGN; Computational complexity; Copper; Data communication; Image coding; Intersymbol interference; Lagrangian functions; OFDM modulation; Quadrature amplitude modulation; Table lookup;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-4788-9

Type

conf

DOI

10.1109/ICC.1998.685166

Filename

685166