Patent Document ID: 5432818
Application ID: 08018030
Patent Flag: 1

Claim One:
1. In an adaptive receiver for use in an automatic and reliable detection of data signals coming through a transmission channel whose channel characteristics is dynamic and unknown, whereupon said adaptive receiver includes a receiver sampler and an adaptive system filtering device in series which concatenate said transmission channel to form an overall adaptive system connected to a decision device of said adaptive receiver for producing detected data symbols, and which enable an adaptive control over the unknown characteristics of said overall adaptive system under the guidance of an error estimation criterion underlying the present invention, a method of effecting an adaptive adjustment of the characteristics of said adaptive system filtering device with an unknown data training, comprising the steps of: (a) choosing an ideal system reference for the characteristics of said overall adaptive system by a user of said adaptive receiver, (b) making an adaptive estimate of the characteristics of said overall adaptive system with said unknown data training, (c) forming an error measurement on the basis of said error estimation criterion when the results in steps (a) and (b) are available, and (d) using a signal resulting from said error measurement in step (c) as a control signal which is fedback to said adaptive system filtering device such that its characteristics will be adjusted and hence the characteristics of said overall adaptive system will be under said adaptive control according to said ideal system reference referred to in step (a).