Wireless Communication

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A Survey of Multiuser Detectors for CDMA/OCDMA Systems


Affiliations
1 Department of Electronics and Communication Engineering, SSK College of Engineering & Technology, Coimbatore – 641105, India
2 SSK College of Engineering & Technology, Coimbatore – 641105 as Principal (e-mail: eniyanravi@gmail.com), India
     

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A survey of the literature in the field of cellular mobile communication for multiuser detection techniques is presented in this article. The third generation wireless communications systems employing Code Division Multiple Access (CDMA) exhibits a user capacity limit. This user capacity limit of CDMA systems are extended by Multi-user Detection (MUD) technique that outperforms the other methods. Also, this study and review leads to a discussion on CDMA and Overloaded-CDMA (OCDMA) systems that employ linear and nonlinear detectors to cancel the multiuser interference.

Keywords

Code Division Multiple Access (CDMA), Linear Parallel Interference Cancellation (LPIC), Minimum Mean Square Error (MMSE), Multiple Access Interference (MAI), Orthogonal Code Division Multiple Access (OCDMA).
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  • A Survey of Multiuser Detectors for CDMA/OCDMA Systems

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Authors

S. Sasipriya
Department of Electronics and Communication Engineering, SSK College of Engineering & Technology, Coimbatore – 641105, India
C. S. Ravichandran
SSK College of Engineering & Technology, Coimbatore – 641105 as Principal (e-mail: eniyanravi@gmail.com), India

Abstract


A survey of the literature in the field of cellular mobile communication for multiuser detection techniques is presented in this article. The third generation wireless communications systems employing Code Division Multiple Access (CDMA) exhibits a user capacity limit. This user capacity limit of CDMA systems are extended by Multi-user Detection (MUD) technique that outperforms the other methods. Also, this study and review leads to a discussion on CDMA and Overloaded-CDMA (OCDMA) systems that employ linear and nonlinear detectors to cancel the multiuser interference.

Keywords


Code Division Multiple Access (CDMA), Linear Parallel Interference Cancellation (LPIC), Minimum Mean Square Error (MMSE), Multiple Access Interference (MAI), Orthogonal Code Division Multiple Access (OCDMA).