Multi-User Multiple Input Multiple Output (MU-MIMO) can significantly increase the link capacity without bandwidth expansion. One promising technique is MMSE-SVD, which is a combination of minimum mean square error (MMSE) filter at the base station (BS) side and eigenmode filter generated by singular value decomposition (SVD) at user equipment (UE) side. MMSE-SVD requires BS and UEs to share the MIMO channel state information (CSI) prior to data transmission. This may cause a serious problem in a high mobility environment; the shared MIMO CSI becomes outdated and consequently, the bit-error rate (BER) performance degrades. In this paper, we propose an adaptive MMSE-SVD, which updates the transmit filter using channel prediction and the receive filter using decision-feedback channel estimation. The uncoded BER performance of adaptive MMSE-SVD for orthogonal frequency division multiplexing (OFDM) downlink and single-carrier (SC) uplink is evaluated by computer simulation. Simulation results confirmed that adaptive MMSE-SVD increases the allowable maximum Doppler frequency ($\boldsymbol{f}_{\mathbf{D}}\boldsymbol{T}$) for keeping $\mathbf{BER} < 10^{-2}$ by about 4 times for OFDM downlink while by about 1.6 times for SC uplink.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Adaptive MMSE-SVD to Improve the Tracking Ability Against Fast Fading


    Contributors:


    Publication date :

    2018-08-01


    Size :

    424715 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Adaptive Transmission Based on MMSE Equalization over Fast Fading Channels

    Zhang, Hongyang / Huang, Xiaojing / Zhang, J. Andrew et al. | IEEE | 2020


    LS and MMSE estimation with different fading channels for OFDM system

    Sutar, Manisha B. / Patil, Vikram S. | IEEE | 2017


    Adaptive Pulse Compression via MMSE Estimation

    Blunt, S.D. | Online Contents | 2006


    Adaptive pulse compression via MMSE estimation

    Blunt, S.D. / Gerlach, K. | IEEE | 2006