Computationally efficient optimal power allocation algorithm for multicarrier communication systems

• Published in: 1998 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
• Language: English
• Published: IEEE 1998
• Subjects: AWGN; Computational complexity; Copper; Data communication; Image coding; Intersymbol interference; Lagrangian functions; OFDM modulation; Quadrature amplitude modulation; Table lookup

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...