Title :
A Graph-Based Resource Allocation Algorithm for Downlink MIMO-OFDMA Networks
Author :
Zaki, Ahmed N. ; Fapojuwo, Abraham O.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada
Abstract :
In this paper, we develop an efficient resource allocation algorithm for multiple-input multiple-output orthogonal frequency division multiple access (MIMO-OFDMA) networks that considers all OFDM symbols in the current frame. By recognizing the special structure of the optimization problem, we develop an efficient algorithm based on graph theory that has a complexity independent of the number of OFDM symbols. System simulations show that the proposed algorithm enhances the system throughput and the user´s data rate.
Keywords :
MIMO communication; OFDM modulation; frequency division multiple access; graph theory; optimisation; MIMO-OFDMA networks; graph theory; graph-based resource allocation algorithm; multiple-input multiple-output network; optimization problem; orthogonal frequency division multiple access network; Bit error rate; Downlink; Drives; Frequency conversion; MIMO; OFDM; Quality of service; Receiving antennas; Resource management; Throughput;
Conference_Titel :
Global Telecommunications Conference, 2009. GLOBECOM 2009. IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-4148-8
DOI :
10.1109/GLOCOM.2009.5426297
