Optimal MSE solution for a decision feedback equalizer
نویسندگان
چکیده
منابع مشابه
Optimal MSE Solution for a Decision Feedback Equalizer
Due to the inherent feedback in a decision feedback equalizer (DFE) the minimummean square error (MMSE) or Wiener solution is not known exactly. The main difficulty in such analysis is due to the propagation of the decision errors, which occur because of the feedback. Thus in literature, these errors are neglected while designing and/or analyzing the DFEs. Then a closed form expression is obtai...
متن کاملLMS versus Wiener Filter for a Decision Feedback Equalizer
In this paper we study an LMS-DFE. We use the ODE framework to show that the LMS-DFE attractors are close to the true DFE Wiener filter (designed considering the decision errors) at high SNR. Therefore, via LMS one can obtain a computationally efficient way to obtain the true DFE Wiener filter under high SNR. We also provide examples to show that the DFE filter so obtained can significantly out...
متن کاملAdaptive Bayesian equalizer with decision feedback
A Bayesian solution is derived for digital communication channel equalization with decision feedback. This is an extension to the maximum a posteriori probability symbol-decision equalizer to include decision feedback. A novel scheme of utilizing decision feedback is proposed which not only improves equalization performance but also reduces computational complexity dramatically. It is shown tha...
متن کاملDYNAhllCS OF BLIND DECISION FEEDBACK EQUALIZER ADAPTATION
An outline of the analysisof thestochastic dynamics of the blind adaptation of deckion fcedbadr equalizers (DFEs) operating on noiselm, binary commuuication channels is presented. The general mech.anism whereby the blind adaptation is flawed in the sense that thae Bdst attraction points in parmeter space which lead to unequalLed systems is detined and c l d e d with an exnmple. This bchaviour i...
متن کاملOn the Symbol Based Decision Feedback Equalizer
Decision Feedback equalizers (DFEs) usually outperform linear equalizers for channels with intersymbol interference. However, the DFE performance is highly dependent on the availability of reliable past decisions. Hence, in coded systems, where reliable decisions are only available after decoding the full block, the performance of the DFE will be affected. A symbol based DFE is a DFE that only ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2012
ISSN: 1687-6180
DOI: 10.1186/1687-6180-2012-172