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Recently, the authors have proposed an adaptive Channel Estimation (CE) scheme using one-tap Recursive Least Square (RLS) algorithm (adaptive RLS-CE), where the forgetting factor is adapted to the changing channel condition by the Least Mean Square (LMS) algorithm, for Direct Sequence-Code Division Multiple Access (DS-CDMA) with Frequency-Domain Equalization (FDE). However, the tracking ability for adaptive RLS-CE is limited since the channel estimate obtained from the previously received block is used. In this paper, they introduce the polynomial prediction to improve the tracking ability.
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