A population declining mutated ant colony optimization multiuser detector for MC-CDMA

Authors:
Nan Zhao;Zhilu Wu;Yaqin Zhao;Taifan Quan
Affiliations:
School of Electronics and Information Technology, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China;School of Electronics and Information Technology, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China;School of Electronics and Information Technology, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China;School of Electronics and Information Technology, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China
Venue:
IEEE Communications Letters
Year:
2010

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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.