Browsing by Author "Kazemi, Mohammad"

Now showing items 1-4 of 4

    • Channel reconstruction based multiuser precoding with limited feedback 

      Özateş, Mert; Kazemi, Mohammad; Göken, Çağrı; Duman, Tolga M. (IEEE, 2021-09-06)
      We consider the downlink of a multiuser multiple-input multiple-output (MU-MIMO) system, where each user feeds back a partial channel state information (CSI), namely, the quantized version of the dominant eigenvector of ...

    • Double-zipper: multiple access with zigzag decoding 

      Kazemi, Mohammad; Duman, Tolga M.; Medard, M. (IEEE, 2020)
      As a building block toward a simple and scalable solution to massive random access, we consider two-user multiple access with ZigZag decoding, with no need for any coordination or codebook differentiation. We derive ...

    • Hierarchical over-the-air federated edge learning 

      Aygün, Ozan; Kazemi, Mohammad; Gündüz, D.; Duman, Tolga M. (IEEE, 2022)
      Federated learning (FL) over wireless communication channels, specifically, over-the-air (OTA) model aggregation framework is considered. In OTA wireless setups, the adverse channel effects can be alleviated by increasing ...

    • Robust joint transceiver design for multiuser MIMO systems with calibration errors 

      Kazemi, Mohammad; Göken, Ç.; Duman, Tolga Mete (Institute of Electrical and Electronics Engineers, 2022-08-11)
      We consider the downlink of a multiuser multiple-input multiple-output (MIMO) system operating in the time-division duplexing (TDD) mode. In this mode, assuming reciprocity, the channel coefficients estimated during the ...