| 摘要 |
<p>A homodyne radio receiver apparatus receives radio frequency signal bursts containing a number of symbols and generates digital samples of at least a complex base band signal (I and Q) of each signal bursts. A DC compensator comprises an average calculator (8, 8'), which determines an average DC-level of said samples, and a signed square sum calculator (9, 9'), which calculates a signed square sum of a plurality of said samples and weights the square sum by a compensation factor. Correction means (10, 10') subtracts the square sum from an output of said average calculator means for forming the DC-level estimate.</p> |
