• A Method for Tracking the Accuracy of Channel Estimates in MIMO Receivers

      Kosbar, Kurt; Gupte, Abhishek; Missouri University of Science and Technology (International Foundation for Telemetering, 2009-10)
      Multiple input multiple output communication systems offer significant advantages, but only if the receiver has an accurate estimate of the channel state information (CSI). To obtain a CSI estimate, the transmitter must stop sending data, and instead send a training sequence. To maximize throughput, the time spent sending training data should be minimized. This paper describes a method which allows the receiver to track the accuracy of its CSI estimate, so that it can request new training data only when necessary.
    • Symbol Synchronization of GFSK Modulated Signals in a Multipath Environment

      Kosbar, Kurt; Gupte, Abhishek; Missouri University of Science and Technology (International Foundation for Telemetering, 2009-10)
      This paper investigates the performance of a symbol synchronization technique when used for bandlimited modulation formats in multipath environments. The performance was analyzed using Gaussian Frequency Shift Keying as the modulation format, and assume the receiver has no channel state information The symbol synchronization algorithm calculates the minimum sample variance of eye diagrams over varying symbol rate estimates. The system performance was measured through simulations run at various signal-to-noise ratios and over a range of single-reflection multipath channels.