Exploiting correlation for MMSE channel estimation in massive MIMO systems with RF-impairments

V. Semaganga Frank, Battulga Davaasambu, Takuro Sato

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The Large Scale Antenna System is expected to bring significant improvements to overall Communication System Performance. However the use of so many antennas in Massive Multiple Inputs Multiple Outputs (Massive MIMO) architectures highlights the cost implication of the technology. It is therefore possible that Massive MIMO may be deployed using low cost equipment to avoid HUGE implementation costs. The use of Low Cost Equipment will results into significant Radio Frequency Impairments (RF-Impairments) such as Phase Noise, IQ Imbalance and Nonlinearities, which will affect the overall system performance. Among other aspects channel estimations will also be affected since the signal used for these estimations will be affected by the RF-Impairments. This paper analyzes a way to exploit correlation during Minimum Mean Square Error (MMSE) Channel Estimation of a Massive MIMO System in presence of aggregated RF-Impairments (i.e. combined effects of the impairments). Specifically it derived the statistical distribution of the equivalent aggregated error/noise term using statistical identities and uses the derived term to obtain temporal channel estimation error and consequently the correlation matrix necessary to minimizes the channel Mean Square Error (MSE) of the channel estimate.

    Original languageEnglish
    Title of host publicationProceedings of 2015 IEEE International Conference on Computer and Communications, ICCC 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages324-328
    Number of pages5
    ISBN (Print)9781467381253
    DOIs
    Publication statusPublished - 2016 Jan 19
    EventIEEE International Conference on Computer and Communications, ICCC 2015 - Chengdu, China
    Duration: 2015 Oct 102015 Oct 11

    Other

    OtherIEEE International Conference on Computer and Communications, ICCC 2015
    CountryChina
    CityChengdu
    Period15/10/1015/10/11

    Keywords

    • Channel Estimation
    • Correlation
    • EVM
    • Large Scale MIMO
    • Transceiver Hardware Impairments

    ASJC Scopus subject areas

    • Computer Networks and Communications

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  • Cite this

    Frank, V. S., Davaasambu, B., & Sato, T. (2016). Exploiting correlation for MMSE channel estimation in massive MIMO systems with RF-impairments. In Proceedings of 2015 IEEE International Conference on Computer and Communications, ICCC 2015 (pp. 324-328). [7387590] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CompComm.2015.7387590