Patent ID: 9413562
Filing Date: 2016-08-09
CPC Classification: H04L

Claim Text:
1. A method for determining a channel estimate of a radio channel in a receiving node of a radio communication system, the method comprising: calculating a matched filter channel estimate based on a known reference signal and a received reference signal in a frequency domain; transforming the matched filter channel estimate into an over-sampled transform domain channel estimate; applying a window to the over-sampled transform domain channel estimate to achieve a windowed transform domain channel estimate; transforming the windowed transform domain channel estimate into a frequency domain channel estimate, the frequency domain channel estimate corresponding to a number of sub-carriers; and compensating for a bias in the over-sampled frequency domain channel estimate by applying de-biasing values that are calculated based on a digital sinc function, wherein for each individual sub-carrier, a corresponding de-biasing value is calculated and applied individually for that sub-carrier.