DE-ICI FILTER ESTIMATION FOR PHASE NOISE MITIGATION

摘要: According to some embodiments, a method performed by a wireless device comprises receiving a wireless signal R k over all subcarriers allocated to the wireless device. The signal R k comprises a phase tracking reference signal (PT-RS) on a subset of subcarriers allocated to the wireless device and the subset comprises at least one non-contiguous subcarrier. The method further comprises computing a de-inter-carrier interference (ICI) filter based on the PT-RS and a channel estimate using a convolutional matrix C R of the received signal R k and applying the de-ICI filter to the received signal R k to generate a de-ICI filtered signal.