Title :
Optimization of tap spacings for the tapped delay line decision feedback equalizer
Author_Institution :
Wireless Syst. Res. LAb., Agere Syst., Murray Hill, NJ, USA
Abstract :
In this letter, we optimize tap spacings in a tapped delay line equalizer. We derive a set of nonlinear equations for the optimum tap spacings and tap weights for the decision feedback equalizer. A recursive numerical technique is used to obtain the optimum settings. With optimized tap spacings, the proposed solutions provide a performance upper bound for the decision feedback equalizer for a given number of taps.
Keywords :
circuit optimisation; decision feedback equalisers; delay lines; nonlinear equations; DFE; ISI; intersymbol interference; nonlinear equations; optimization; performance upper bound; recursive numerical technique; tap spacings; tap weights; tapped delay line decision feedback equalizer; Decision feedback equalizers; Delay effects; Delay lines; Interference cancellation; Intersymbol interference; Matched filters; Nonlinear equations; Performance gain; Search methods; Upper bound;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.957384
