Experimental evaluation of channel prediction based on linear prediction of frequency-domain parameters

If the future channel response is predictable we can employ pre-equalization before transmission in order to overcome the degradation of communication quality in a time division duplex (TDD) system. Previously we proposed a linear parameter prediction method for highly accurate prediction of time-varying channels by using chirp Z transform (CZT) and regarding the channel as summation of discrete Doppler paths in the frequency domain. In this paper, we report experimental results of our method, namely, linear prediction of frequency-domain parameters (LPFDP). We show the evaluation results in the phase and power predictions experimentally. We succeed in the improvement of the prediction accuracy by applying our LPFDP method to the actual data.