Patent ID: 8396176
Filing Date: 2013-03-12
Classification: H04L

Abstract:
1. An Orthogonal Frequency Division Multiplex (OFDM) receiving device, comprising: a converting unit for converting a received OFDM signal where no smaller than one specific sub-carriers among plurality of sub-carriers are modulated by a known modulation signal into a received signal of each sub-carrier; an extracting unit for extracting an ingredient caused by a frequency drift and a phase noise of said sub-carrier based on the received signal of said specific sub-carrier and said known modulation signal; and a compensating unit for compensating the received signal of said sub-carrier using said extracted ingredient, wherein said extracting unit further comprises: a reciprocal calculating unit for calculating a reciprocal of the received signal of said specific sub-carrier and generates a reciprocal signal; and a multiplying unit for multiplying said reciprocal signal by said known modulation signal and generates the ingredient caused by said frequency drift and phase noise.