Patent Document ID: 4181888
Application ID: 05931025
Patent Flag: 1

Claim One:
1. An arrangement for equalizing samples of a received modulated data signal having a predetermined carrier frequency, said arrangement including means operative in response to said samples for forming decisions as to the values of data symbols represented thereby, each of said decisions being represented by a complex number, characterized in that said arrangement further includes means (51-55, 61-65) for forming a plurality of signal products associated with an individual one of said samples, each multiplicand of each product being derived from a respective one of said decisions, each said respective one of said decisions bearing a predetermined temporal relationship to said one of said samples, at least one multiplicand of individual ones of said signal products being the complex conjugate of the decision from which said one multiplicand is derived, and means (71-75) for multiplying each of said products by an associated coefficient and by a predetermined harmonic of said carrier frequency to form a plurality of modulated weighted products, said decision forming means including data recovery means (14, 17) for forming a decision as to the value of the data symbol represented by said one of said samples in response to said modulated weighted products.