Title :
Analytical results on adaptive equalization performance in multipath time-varying fading channels
Author_Institution :
Egyptian Armed Forces
Abstract :
A closed form formula is derived for the average mean-square-error (AMSE) over the time division multiple access (TDMA) user´s slot at the output of a LE-LMS (linear equalizer that uses the least mean square algorithm for adaptation). This formula for the AMSE can be used to examine the effect of system parameters on the equalizer performance, the result of which provides the opportunity to make initial evaluations of important system design decisions. In addition, this formula can be used to compare the AMSE and/or the performance of different system models having different channel variation models and/or different multipath profile shapes. The conclusions that are extracted from applying this formula can be applied also for the decision feedback and fractionally spaced equalizers. Also, the calculated and simulated AMSE are compared. Furthermore, examples of this formula´s applications are demonstrated
Keywords :
adaptive equalisers; fading channels; least mean squares methods; multipath channels; time division multiple access; time-varying channels; AMSE; LE-LMS; TDMA; adaptive equalization performance; average mean-square-error; channel variation models; closed form formula; decision feedback equalizer; equalizer performance; fractionally spaced equalizers; least mean square algorithm; linear equalizer; multipath profile shapes; multipath time-varying fading channels; system design decisions; system parameters; time division multiple access; Adaptive equalizers; Bit error rate; Decision feedback equalizers; Fading; Intersymbol interference; Least squares approximation; Performance analysis; Shape; Time division multiple access; Time varying systems;
Conference_Titel :
Radio Science Conference, 1998. NRSC '98. Proceedings of the Fifteenth National
Conference_Location :
Cairo
Print_ISBN :
0-7803-5121-5
DOI :
10.1109/NRSC.1998.711491
