Title :
A population declining mutated ant colony optimization multiuser detector for MC-CDMA
Author :
Zhao, Nan ; Wu, Zhilu ; Zhao, Yaqin ; Quan, Taifan
Author_Institution :
Harbin Inst. of Technol., Harbin, China
fDate :
6/1/2010 12:00:00 AM
Abstract :
In this letter, a population declining mutated ant colony optimization (PDMACO) multiuser detector for MC-CDMA is proposed. The PDMACO algorithm is a hybrid ACO algorithm introducing population declining mechanism and mutation mechanism, which can achieve excellent performance by enlarging the searching range and avoiding local minima with almost the same computational complexity. Simulations show that its performance in reducing the bit-error rate and near-far effect is much better than that of the ACO multiuser detectors and close to that of the optimal multiuser detector.
Keywords :
code division multiple access; computational complexity; error statistics; multiuser detection; optimisation; MC-CDMA; PDMACO algorithm; bit-error rate; computational complexity; hybrid ACO algorithm; local minima; multicarrier-CDMA; multiuser detector; mutation mechanism; population declining mechanism; population declining mutated ant colony optimization; Ant colony optimization; Bit error rate; Computational complexity; Computational modeling; Detectors; Genetic mutations; Helium; Multiaccess communication; Multicarrier code division multiple access; Multiuser detection; MC-CDMA, multiuser detection, ant colony optimization; population declining mechanism, mutation mechanism;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.06.100157
