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Adaptive BER-constraint-based power allocation for downlink MC-CDMA systems with linear MMSE receiver

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Abstract

Power allocation plays a crucial role in wireless communications. To facilitate the efficient allocation of limited transmit power, in this paper, a bit error rate (BER) constraint based power allocation scheme is proposed for the downlink of multi-carrier code division multiple access (MC-CDMA) systems with linear minimum mean square error (MMSE) receiver. According to the instantaneous path gains, the proposed scheme can determine the required minimum transmit power on each channel to meet the BER constraint. The simulation results show that the proposed scheme can consistently provide high-quality solutions with a very few iteration time, and also prove that it is efficient in reducing the transmit power while meeting BER constraint, and thereby improves the system performance.

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Authors and Affiliations

  1. Key Laboratory for Information System Security of Ministry of Education, School of Software, Tsinghua University, Beijing, 100084, China

    JunBo Wang

  2. State Key Laboratory of Integrated Services Networks, Xidian University, Xi’an, 710071, China

    JunBo Wang

  3. College of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China

    JunBo Wang, JinYuan Wang & Zhe Cao

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

    Ming Chen & SuWen Tang

Authors
  1. JunBo Wang
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  2. Ming Chen
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  3. JinYuan Wang
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  4. Zhe Cao
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  5. SuWen Tang
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Corresponding author

Correspondence to JunBo Wang.

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Wang, J., Chen, M., Wang, J. et al. Adaptive BER-constraint-based power allocation for downlink MC-CDMA systems with linear MMSE receiver. Sci. China Inf. Sci. 56, 1–9 (2013). https://doi.org/10.1007/s11432-012-4593-8

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  • DOI: https://doi.org/10.1007/s11432-012-4593-8

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