Patent ID: 8073077
Filing Date: 2011-12-06
Classification: H04B,H04L

Abstract:
1. A reception quality calculation method, in which past CPICH symbols are used to estimate the current channel, the current CPICH symbols are channel-compensated based on a channel estimation value obtained, and the channel-compensated CPICH symbols are used to calculate reception quality, the method comprising: performing first channel compensation of past CPICH symbols using a past channel estimation value and saving the past CPICH symbols; calculating a reception quality using the channel-compensated past CPICH symbols obtained by the first channel compensation, as a first reception quality and saving the first reception quality; performing second channel compensation of the past CPICH symbols which have been saved using a current channel estimation value, and calculating a second reception quality using the channel-compensated past CPICH symbols obtained by the second channel compensation; determining a reception quality correction value on the basis of the difference between the second reception quality and the saved first reception quality; performing channel compensation of the current CPICH symbols using the current channel estimation value, and calculating a third reception quality using the channel-compensated current CPICH symbols; and correcting the third reception quality with the reception quality correction value and outputting the corrected third reception quality.