Before revision: imbalance estimation Frequency domain OFDM signals under the influence of imbalance is given by:The imbalance coefficients and are mixed with the channel frequency responses, making both the imbalance estimation and channel estimation difficult.
After revision: IQIQIQIQimbalance estimation Frequency domain OFDM signals under the influence of imbalance is given by:The imbalance coefficients and are mixed with the channel frequency responses, making both the imbalance estimation and channel estimation difficult.