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Performance of Multiband Complex-Wavelet-Based MC-CDMA System with Space-Time Coding over Nakagami-m Fading Channels

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Abstract

Space-time coding technique and Multi-carrier CDMA (MC-CDMA) technique have received much interest due to their high frequency spectrum efficiency and high data rate transmission. On the basis of analyzing the two technique principle, utilizing the optimized multiband complex wavelet as multi-carrier basis function, we propose an MC-CDMA system based on multiband complex wavelet and space-time coding for downlink and investigate the system bit error rate (BER) performance over Nakagami-m fading channel. The system has much higher spectrum efficiency and data rate due to no need any cyclic prefix (CP) when compared to the conventional MC-CDMA system. Moreover, the application of space-time coding technique improves the ability against fading channel effectively and perfects the downlink performance further. Simulation results show that the proposed multiband complex-wavelet-based MC-CDMA (MBCW-MC-CDMA) system performs better than conventional MC-CDMA system and real wavelet-packet-based MC-CDMA system due to its superior ability against interferences. Especially, the space-time coded MBCW-MC-CDMA system has superior performance, and it outperforms single antenna MBCW-MC-CDMA and conventional MC-CDMA with space-time coding.

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Authors and Affiliations

  1. College of Information Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    Xiang-Bin Yu & Xiao-Min Chen

  2. National Mobile Communications Research Laboratory, Southeast University, Nanjing, 210096, China

    Xiang-Bin Yu & Guang-Guo Bi

Authors
  1. Xiang-Bin Yu
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  2. Guang-Guo Bi
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  3. Xiao-Min Chen
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Correspondence to Xiang-Bin Yu.

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Yu, XB., Bi, GG. & Chen, XM. Performance of Multiband Complex-Wavelet-Based MC-CDMA System with Space-Time Coding over Nakagami-m Fading Channels. Circuits Syst Signal Process 29, 539–552 (2010). https://doi.org/10.1007/s00034-010-9162-z

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  • DOI: https://doi.org/10.1007/s00034-010-9162-z

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