Abstract
The conventional single user detector in DS/CDMA (Direct Sequence Code Division Multiple Access) systems involves multiple access interference and the near-far effect which cause the limitation of capacity. On the other hand, the computational complexity of the optimum multiuser detector grows exponentially with the number of users. There has been a lot of interest in suboptimal multiuser detectors with less complexity and reasonable performance. In this paper we apply the classic and a new modified genetic algorithm for multiuser detection of DS/CDMA signals. It is shown that the classic genetic algorithm (GA) reaches an error floor at high signal to noise ratios while the proposed method has higher performance than the classic one and comparable to the optimum single user detector with much less complexity than the optimum multiuser detector.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Lee, W.C.Y.: Overview of Cellular CDMA. IEEE Trans. Vehicular Techn., Vt-40,No. 2 1991 291–302
Verdu, S.: Minimum Probability of Error for Asynchronous Gaussian Mutiple-Access Channels. IEEE Trans. Information Theory, Vol. IT-32,No. 1, (1986) 85–96
Holland, J.H.: Adaptation in Natural and Artificial Systems, University of Michigan Pressn (1975)
Tang, K.S.K., Man, F., Kwong, He, S.Q.: Genetic Algorithms and Their Applications. IEEE Signal Processing Mag., Vol. 34, (1996) 22–37
Goldberg, D.E.: Genetic Algorithms in Search, Optimization, and Machine Learning. Addison-Wisely (1989)
Ergun, C., Hacioglu, K.: Multiuser Detection Using a Genetic Algorithm in CDMA Communications Systems. IEEE Trans. Commun., Vol. 48,No. 8 (2000) 1374–1383
Wang, X.F., Lu, W.S., Antonio, A.: A Genetic Algorithm-Based Multiuser Detector for Multiple Access Communications, ISCAS’98, Vol. 4, (1998) 534–537
Juntti, M.J., Schlosser, T., Lilleberg, J.O.: Genetic Algorithms for Multiuser Detection in Synchronous CDMA, IEEE International Symposium on Inform. Theory, (1997), 492
Lupas, R., Verdu, S.: Linear Multi-User Detectors for Synchronous Code-Division Multiple Access Channels. IEEE Trans. Information Theory, Vol. 38,No. 4, (1989), 496–508
Varansi, M.K., Aazhang, B.: Near Optimum Detection in Synchronous Code Division Multiple Access Systems. IEEE Trans. Commun., Vol. 39, (1991) 725–735
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2001 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Shayesteh, M.G., Menhaj, M.B., Nobary, B.G. (2001). A New Modified Genetic Algorithm for Multiuser Detection in DS/CDMA Systems. In: Reusch, B. (eds) Computational Intelligence. Theory and Applications. Fuzzy Days 2001. Lecture Notes in Computer Science, vol 2206. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45493-4_61
Download citation
DOI: https://doi.org/10.1007/3-540-45493-4_61
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-42732-2
Online ISBN: 978-3-540-45493-9
eBook Packages: Springer Book Archive