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To improve the accuracy of the channel estimation in PDM-CO-OFDM system when LS algorithm is used, a joint denoising method is proposed in this paper. We have theoretically proposed and simulated designed scattered pilot pattern for PDM-CO-OFDM system, then multi-wavelet is used to denoise the LS channel estimation results which have been interpolation in frequency domain, ISFA is further used to...
In this paper, focusing on the downlink channel estimation of TD-LTE digital relay system, we present a new channel estimation method which is based on LS algorithm at scattered pilot frequencies with cascaded one-dimension linear interpolation both in time and frequency domains. Meanwhile, different algorithms for channel estimation, such as LS and LMMSE, are investigated and comparison of linear...
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