A BLIND EQUALIZATION METHOD FOR A HIGH DEFINATION TELEVISION SIGNAL

AN ADAPTIVE EQUALIZER UPDATES ITS TAP COEFFICIENTS WITH THE AID OF AN ERROR SIGNAL E(K) = SIGN[ Z(K) ] * (RS - ׀ Z(K) ׀ 2 ) WHERE SIGN[ ] IS THE SIGN FUNCTION, Z(K) IS THE EQUALIZER OUTPUT AT SYMBOL TIME K, ׀ ׀ IS THE MAGNITUDE FUNCTION AND RS IS A POSITIVE REAL CONSTANT, WHICH IS OPTIMALLY DEFINED...

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Bibliographische Detailangaben
Hauptverfasser:	JOHN SYDNEY STEWART, IVONETE MARKMAN
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PICTORIAL COMMUNICATION, e.g. TELEVISION TRANSMISSION
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Beschreibung
Zusammenfassung:	AN ADAPTIVE EQUALIZER UPDATES ITS TAP COEFFICIENTS WITH THE AID OF AN ERROR SIGNAL E(K) = SIGN[ Z(K) ] * (RS - ׀ Z(K) ׀ 2 ) WHERE SIGN[ ] IS THE SIGN FUNCTION, Z(K) IS THE EQUALIZER OUTPUT AT SYMBOL TIME K, ׀ ׀ IS THE MAGNITUDE FUNCTION AND RS IS A POSITIVE REAL CONSTANT, WHICH IS OPTIMALLY DEFINED AS RS = E{ ׀ AN ׀ 3} / E{ ׀ A N ׀ }, WHERE E{ } IS THE MATHEMATICAL EXPECTATION FUNCTION AND AN IS THE INFORMATION SYMBOL AT SYMBOL TIME N. A GENERALIZED EQUALIZER ERROR SIGNAL SATISFIES E(K) = SIGN[ Z(K) ] * (RSP - ׀ Z(K) ׀P) WHERE RSP IS A POSITIVE REAL CONSTANT, WHICH IS OPTIMALLY DEFINED AS RSP = E{ ׀ AN ׀P+1} / E{ ׀ AN ׀ } AND P IS A POSITIVE INTEGER. THE EQUALIZER CONDUCTS BLIND EQUALIZATION OF AN ADVANCED TELEVISION SYSTEMS COMMITTEE-HIGH DEFINITION TELEVISION SIGNAL AND ANY OTHER ONE-DIMENSIONAL MODULATION SYSTEM.