| 摘要 |
<p>A method for determining IQ imbalance introduced on an RF multicarrier signal received via a channel on a direct conversion analog receiver, comprising the steps of: receiving a training signal on said receiver; demodulating the training signal with said receiver; and determining at least one IQ imbalance parameter from the demodulated training signal, said parameter being indicative of the IQ imbalance of the training signal. The IQ imbalance parameter is determined by estimating a first frequency domain channel characteristic of said channel on the basis of the demodulated training signal; defining a predetermined relationship between a corrected frequency domain channel characteristic of said channel and said first channel characteristic, said predetermined relationship comprising the at least one IQ imbalance parameter; and determining the at least one IQ imbalance parameter in such a way that the corrected channel characteristic fulfils a channel constraint.</p> |
