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Adaptive Decision Feedback Equalizer (ADFE)

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Author(s): Sajjad Ahmed Ghauri | Hannan Adee | Muhammad Safi-ur-Rehman Butt | Muhammad Arslan

Journal: International Journal of Computer & Electronics Research
ISSN 2320-9348

Volume: 2;
Issue: 4;
Start page: 490;
Date: 2013;
Original page

Keywords: Adaptive Decision Feedback Equalizer (ADFE) | Equalization to Remove ISI | Adaptive Equalization

ABSTRACT
An equalizer is required at the receiver end in the wireless transmission environment. The equalizers have been categorized into two groups linear and non-linear, based on their implementation and performance. Linear equalizers are conceptually and computationally simple, while non-linear equalizers are complex and computationally intensive. The simplicity of linear equalizers comes at the cost of performance. On the other hand, non-linear equalizers have higher implementation complexity, but they offer superior performance. Decision feedback equalizer provides a good tradeoff between performance and complexity. In a time varying channel, an equalizer that adapts to the changes in the channel is required to recover the transmitted symbols.  So an adaptive decision feedback equalizer is studied.  
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