正交分頻多工（Orthogonal Frequency Division Multiplexing，OFDM）在高速時變移動通道下會遭受嚴重的干擾，為了克服這個問題，我們提出了一個低複雜度接收端架構，可有效的消除通道效應。經由所估測通道，再利用低功率判斷機制除去不合宜的載波，然後利用遞迴的可調濾波器追蹤鎖定有效的估測通道效益。經由套用實際量測通道模型的模擬，我們證明出相較於傳統非動態的通道估測技術增加了2到8db的好處。若考慮率及收斂時間的問題，信號經過解對映（DeMAP）及重新對映（ReMAP）過程可以消除變化太大的子載波干擾效率。

Orthogonal frequency division multiplexing systems suffer severely from several highly time-variant channel effects under conditions of high-mobility. To cope with this issue, we propose a low-complexity receiver architecture utilizing interference cancellation followed by a real-time channel parameter extraction for channel estimation. The estimated parameters for the delay spread in power delay profiles can be tracked iteratively using an adaptive filter, according to the current received signal and channel information. The numerical simulations show that this approach achieves system performance closely to the ideal channel correlation. With the real testbed field measured channel models on Empirical Channel Models [1] , we proved a significant gain improvement 2-8 dB, compared with the traditional one tap channel estimation and smoothing method under scenarios of high-mobility.