A multi-objective algorithm for DS-CDMA code design based on the clonal selection principle

Authors:
Daniel Stevens;Sanjoy Das;Bala Natarajan
Affiliations:
Kansas State University, Manhattan, KS;Kansas State University, Manhattan, KS;Kansas State University, Manhattan, KS
Venue:
GECCO '05 Proceedings of the 7th annual conference on Genetic and evolutionary computation
Year:
2005

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Abstract

This paper proposes a new algorithm based on the clonal selection principle for the design of spreading codes for DS-CDMA. The algorithm follows a multi-objective approach, generating complex spreading codes with good autocorrelation as well as good cross-correlation properties. It also enables spreading code design with no restrictions on the number of users or code length. The algorithm maintains a repertoire of codes that are subject to cloning and undergo a process of affinity maturation to obtain better codes. Results indicate that the produces code sets that lie very close to the theoretical Pareto front.