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PDA detector For DS-CDMA cooperative system

  • Published:
Journal of Electronics (China)

Abstract

This paper considers the uplink of a cooperative Code-Division Multiple-Access (CDMA) system where parts of mobile nodes serve as source nodes while the others serve as relay nodes at any instant in time. When the non-orthogonal spreading codes are adopted, Multiple Access Interference (MAI) will exist at both the relay nodes and the base node, causing diversity gain to diminish. To mitigate MAI and exploit full advantages of cooperation, the Probabilistic Data Association (PDA) is developed at the relay nodes and the base node. Simulation results demonstrate that some performance gains can be obtained by the PDA detector over the Minimum Mean Square Error (MMSE) detector at high Signal-to-Noise Ratio (SNR) and conversely at low SNR.

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Author information

Authors and Affiliations

  1. College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China

    Zhonghui Mei, Qingmin Meng & Xiaofei Li

  2. College of Information Science Engineering, Southeast University, Nanjing, 210096, China

    Lenan Wu

  3. Nanjing University of Posts and Telecommunications, Box 179, Nanjing, 210003, China

    Zhonghui Mei

Authors
  1. Zhonghui Mei
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  2. Qingmin Meng
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  3. Xiaofei Li
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  4. Lenan Wu
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Corresponding author

Correspondence to Zhonghui Mei.

Additional information

Supported by the National Natural Science Foundation of China (No. 60772061), Science Foundation of Nanjing University of Posts and Telecommunications (No. NY207132), and the Postdoctoral Research Programs (No. 0801054B).

Communication author: Mei Zhonghui, born in 1976, male, Ph.D.

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Mei, Z., Meng, Q., Li, X. et al. PDA detector For DS-CDMA cooperative system. J. Electron.(China) 26, 812–818 (2009). https://doi.org/10.1007/s11767-008-0157-x

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  • DOI: https://doi.org/10.1007/s11767-008-0157-x

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