The Analysis among Magnitude Frequency Rsponse of 1-D Linear Interpolation, Channel Impulse Response and Residual Timing Errors and the Efficiency Improvement of Linearly Interpolative Channel Estimation in OFDM Systems

In this project, we discuss the properties of channel estimation with 1-D linear interpolation filter in OFDM systems from the viewpoint of upsampling in discrete-time signal processing. We analyze the relations among magnitude frequency response of 1-D linear interpolation filter, channel impulse response and residual timing errors. The efficiency of 1-D linear interpolation will reduce when the maximum delay of channel impulse response is large and residual timing errors are present, so we propose a simple method to improve it. The efficiency of interpolation with the proposed method is improved from the bit error rate simulation in a simple example.

Project ID:PB10207-1800
External Project ID:NSC102-2221-E182-005