Title :
Ergodic sum-rate maximization in OFDMA uplink with discrete rates
Author :
Yaacoub, Elias ; El-Hajj, Ahmad M. ; Dawy, Zaher
Author_Institution :
Dept. of Electr. & Comput. Eng., American Univ. of Beirut, Beirut, Lebanon
Abstract :
Weighted ergodic sum-rate maximization in OFDMA uplink is investigated. A finite set of achievable rates is assumed. The problem is formulated as a convex optimization problem. An analytical solution is derived using the Lagrangian dual decomposition. Numerical results show that the weights can be adjusted to increase the fairness in the system or to increase the priority of certain users.
Keywords :
convex programming; frequency division multiple access; set theory; Lagrangian dual decomposition; OFDMA uplink; convex optimization; discrete rates; finite set; weighted ergodic sum-rate maximization; Bit rate; Downlink; Frequency conversion; Frequency diversity; Greedy algorithms; Lagrangian functions; Long Term Evolution; Modulation coding; Resource management; WiMAX;
Conference_Titel :
Wireless Conference (EW), 2010 European
Conference_Location :
Lucca
Print_ISBN :
978-1-4244-5999-5
DOI :
10.1109/EW.2010.5483394
