Abstract
Optimum multiuser detection (OMD) in direct-sequence code-division multiple access (DS-CDMA) communication systems is an NP-complete combinatorial optimization problem. The first contribution of this paper is the theoretical investigation of the OMD problem. Its fitness landscape is specified by a set of neighborhoods of all points of the search space. The number and the distributions of local optima are studied in detail. Investigation results give hints how to choose the modification operators and design more efficient random search heuristics for this problem. Then an efficient iterated local search algorithm is proposed for multiuser detection and simulation results show that it can provide rather good performance for cases where other algorithms perform poorly.
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Wang, S., Zhu, Q., Kang, L. (2006). Local Optima Properties and Iterated Local Search Algorithm for Optimum Multiuser Detection Problem. In: Huang, DS., Li, K., Irwin, G.W. (eds) Intelligent Computing. ICIC 2006. Lecture Notes in Computer Science, vol 4113. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11816157_110
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DOI: https://doi.org/10.1007/11816157_110
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-37271-4
Online ISBN: 978-3-540-37273-8
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