In this paper we address the quantization of adaptive equalizers for OFDM-based WLAN. Traditional simulation-based approaches require extremely long times to quantize complex systems. We have tackled this issue threefold: ⅰ) generating a minimization wordlength procedure timed for adaptive equalizers; ⅱ) providing a quantization evaluation criterion that allows fast Monte-Carlo simulations with high relative errors; and ⅲ) simulating only a subset of subcarriers to extract quantization information. One of the main results is that running several single-subcarrier simulations is possible to achieve acceptable results in simulation time and performance degradation compared to the simulation of complete OFDM symbols. We use as a practical example a 220 Mbps OFDM RLS equalizer combined with ABL pre-equalization.
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