METHOD FOR ESTIMATING AND REMOVING DC OFFSET

摘要

The present invention relates to a method in a direct conversion receiver for estimating and removing DC offset, said direct conversion receiver being arranged to receive radio communication signals in a wireless communication system, the method comprising the steps of: receiving and down sampling time domain signals, wherein said time domain signals comprise at least one first synchronisation signal; estimating a residual DC offset &Dgr;d based on said at least one first synchronisation signal; computing a refined DC offset estimation d̃ based on said estimated residual DC offset &Dgr;d; and applying said refined DC offset estimation d̃ on said time domain signals so as to remove DC offset from said time domain signals. Furthermore, the invention also relates to a receiver device, a computer program, and a computer program product thereof.