Effect of quantization range limit for low-resolution analog-to-digital converters in full-digital massive MIMO system

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    Abstract

    Low-resolution analog-to-digital converters (ADCs) may need to be implemented in a full-digital massive multi-user MIMO system for low-power consumption. In this paper, the performance with a proposed ADC design for low-resolution ADCs to suppress the amount of degradation due to the quantization process in the full-digital massive multi-user MIMO system is evaluated. In the proposed ADC design, quantization range limit is specified based on the mean amplitude of a received signal and the input amplitude is bounded to eliminate thermal noise. Numerical results show that, through clipping the thermal noise by setting the appropriate quantization range limit, the full-digital massive MIMO with low-resolution ADCs (even 1-bit ADCs) realizes better system throughput than that with infinite-resolution ADCs. It is also shown that the throughput with low-resolution ADCs is equivalent to that with infinite-resolution ADCs when the number of users is less than three (the number of streams is less than six).

    Original languageEnglish
    Title of host publicationProceedings - 2019 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2019
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781728112046
    DOIs
    Publication statusPublished - 2019 Aug
    Event2019 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2019 - Singapore, Singapore
    Duration: 2019 Aug 282019 Aug 30

    Publication series

    NameProceedings - 2019 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2019

    Conference

    Conference2019 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2019
    CountrySingapore
    CitySingapore
    Period19/8/2819/8/30

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    Keywords

    • Low-resolution ADCs
    • Massive MIMO

    ASJC Scopus subject areas

    • Signal Processing
    • Computer Networks and Communications

    Cite this

    Gao, P., & Sanada, Y. (2019). Effect of quantization range limit for low-resolution analog-to-digital converters in full-digital massive MIMO system. In Proceedings - 2019 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2019 [8851655] (Proceedings - 2019 IEEE VTS Asia Pacific Wireless Communications Symposium, APWCS 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VTS-APWCS.2019.8851655