Front end processor for data receiver and nonlinear distortion equalization method

An OFDM baseband signal that has undergone a synchronization carrier modulation or a differential carrier modulation is inputted to a complex signal converter for nonlinear distortion equalization so as to be converted according to the N-th order function conversion characteristics (N>1). Then, n...

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Bibliographische Detailangaben
Hauptverfasser:	KANNO IPPEI, KATO HISAYA, OUCHI MIKIHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION PULSE TECHNIQUE TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	An OFDM baseband signal that has undergone a synchronization carrier modulation or a differential carrier modulation is inputted to a complex signal converter for nonlinear distortion equalization so as to be converted according to the N-th order function conversion characteristics (N>1). Then, nonlinear distortion in the OFDM baseband signal is compensated for. At this time, the following is used as a conversion equation: y(n)=x(n)+Sigmaam(n)xm(n)(m>1) wherein the values of the input signal, the output signal and the coefficient for m-th order distortion equalization at time n are, respectively, x(n), y(n) and am(n).