A suboptimum linear receiver based on a parametric channel model

A suboptimum, linear, minimum mean-squared error (MMSE) data communication receiver that is based on a parametric model for a linear, time-invariant, or slowly time-varying channel is shown to perform well at reasonable input signal-to-noise ratios (SNRs) and for short training periods. The receiver makes use of a fractionally spaced equalizer (FSE) design whose time span is a single symbol period. It is assumed that a parametric model, with parameter estimates that are obtainable from a training sequence prior to data acquisition, is adequate for representing the impulse response of the equivalent baseband channel