我們的研究焦點在於應用於正交分頻多工系統(OFDM)之通道估測及RF端的非理想性效應補償之問題。這些非理想性效應主要有載波頻率位移 (CFO), 實虛部不協調 (IQ imbalance), dc 位移 (dc offset), 等等。我們的研究包含盲蔽估測及資料輔助的方法。
Our research focuses on the channel estimation and compensation of RF front-end non-idealities in OFDM and multicarrier systems for wideband applications. These non-idealities include carrier frequency offset (CFO), in-phase quadrature-phase imbalance (IQ imbalance), dc offset, timing synchronization, and etc. Both blind and data-aided methods are studied.