Title :
A distributed power allocation algorithm with adaptive modulation for multi-cell OFDM systems
Author :
Su, Hsuan Jung ; Geraniotis, Evaggelos
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
Abstract :
A heuristic distributed algorithm for allocating power among OFDM subchannels is proposed. Its performance and convergence in a multi-cell system with frequency reuse factor 4 are evaluated through simulation. With a realistic simulation which considers uniformly distributed mobiles, propagation loss and fading, it is shown that this simple distributed algorithm enhances the throughput of OFDM systems as compared to equal power allocation
Keywords :
OFDM modulation; adaptive modulation; cellular radio; channel capacity; cochannel interference; distributed algorithms; fading channels; frequency allocation; radiowave propagation; OFDM subchannels; adaptive modulation; convergence; distributed power allocation algorithm; fading; frequency reuse factor; heuristic distributed algorithm; multi-cell OFDM systems; performance; propagation loss; simulation; throughput; uniformly distributed mobiles; Base stations; Distributed algorithms; Educational institutions; Fading; Interchannel interference; Mobile communication; Mobile computing; OFDM modulation; Throughput; Wideband;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.723829
