EE677: Topics

  • Review of mathematical basics:

    • Linear algebra and information theory

  • Wireless communication basics for single-antenna channels:

    • Capacity of deterministic channels

    • Outage capacity for slow-fading channels

    • Ergodic capacity for fast-fading channels

  • Conventional 4G MIMO wireless systems:

    • Full transmit and receive channel state information (CSI)

      • Capacity of deterministic, slow, and fast fading channels

      • SVD-based capacity-achieving transmitter-receiver (transceiver) design

      • Water-filling power allocation technique to achieve capacity

    • Receive CSI alone

      • Capacity of deterministic, slow, and fast fading channels

      • Linear MF, ZF and MMSE transceiver design

      • Non-linear ZF-SIC and MMSE-SIC receivers

      • Capacity optimality of MMSE-SIC receivers

    • Space-time coding

      • Diversity concepts

  • 5G massive MIMO (mMIMO) networks:

    • mMIMO networks with ideal channel information at BS

      • Uplink and downlink system model

      • LoS and NLOS mMIMO – interference characterization and key differences

    • Channel model for mMIMO networks

      • LoS channel, NLoS channels - local scattering model

      • Impact of spatial channel correlation on SE

      • Channel hardening and favorable propagation

    • mMIMO channel estimation

      • High complexity estimator: MMSE

      • Low complexity estimators: element-wise MMSE, least squares

      • Difference in uplink and downlink channel estimation

    • mMIMO networks with estimated channel information at BS

      • Receiver design for multi-cell mMIMO

        • Multi-cell MMSE receiver, single-cell MMSE receiver, regularized zero forcing (RZF), ZF and MRC

        • SE comparison of receivers in a realistic multi-cell set-up

      • Use and to Forget (UatF) SE bound

      • Pilot contamination and its impact on mMIMO performance