Homodyne radio receiver

零差无线电接收装置接收含有多个符号的射频信号突发并且产生每个信号突发的至少一个复合基带信号(I和Q)的数字样值。DC补偿器包括确定所述样值的平均DC电平的平均值计算器(8、8')，以及计算多个所述样值的有正负号平方和并且用补偿因数对平方和加权的有正负号平方和计算器(9、9')。校正装置(10、10')从所述平均值计算装置的输出中减去所述平方和以形成DC电平估算值。 A homodyne radio receiver apparatus receives radio frequency signal bursts containing a number of sym...

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Bibliographische Detailangaben
Hauptverfasser:	JAN PETER JAKOBSSON, SVEN ERIK NIKLAS STENSTEREN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
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Beschreibung
Zusammenfassung:	零差无线电接收装置接收含有多个符号的射频信号突发并且产生每个信号突发的至少一个复合基带信号(I和Q)的数字样值。DC补偿器包括确定所述样值的平均DC电平的平均值计算器(8、8')，以及计算多个所述样值的有正负号平方和并且用补偿因数对平方和加权的有正负号平方和计算器(9、9')。校正装置(10、10')从所述平均值计算装置的输出中减去所述平方和以形成DC电平估算值。 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 burst. 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.