PSO-based multiuser detectors for high-order modulation DS/CDMA systems under spatial and multipath diversities
by Bruno A. Angélico; Taufik Abrão; L.D. De Oliveira; Paul Jean E. Jeszensky
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 6, No. 3, 2013

Abstract: In this paper, the uplink direct-sequence code-division multiple access (DS-CDMA) multiuser detection (MuD) problem is studied from a heuristic perspective. The heuristic particle swarm optimisation (PSO) approach is due to the NP-complexity of the MuD optimisation problem. The challenge is to solve the associated hard complexity problem in a polynomial time. A complete parameter optimisation procedure for PSO applied to the MuD problem is carried out herein under different system configurations, such as high-order modulation and diversity exploitation. The PSO-MuD performance is analysed through Monte Carlo simulation (MCS) method. MCS results show that, after convergence, the performance achieved by the PSO-MuD is much better than that shown by the conventional detector, and somewhat closer to that given by the single-user bound. The flat Rayleigh channel is initially considered, but the results are further extended to the space-time wireless channels.

Online publication date: Tue, 06-Aug-2013

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Wireless and Mobile Computing (IJWMC):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?


Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com