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On the basis of analysis to MIMO-OFDM system, the paper use the characteristic of the time domain channel energy concentrated on relatively small number of sampling points to improve the estimation algorithm, and use singular value decomposition (SVD) to give a low-level channel estimation algorithm. Simulation results show that the improved algorithm has better estimation performance and low computational...
Interferogram estimate method based on the weight subspace fitting is presented through the subspace fitting of measured signal subspace and the subspace spanned by compound steering vectors. The proposed method can improve the performance of interferogram estimate, using the forward-backward average processing method to decorrelate the signals. The processing results from real data of InSAS show...
Based on the training sequence in the DFT channel estimation method, the further research on the LS and MMSE channel estimation algorithm of OFDM systems is proceeding. To use of the characteristics that signal energy concentrated on time domain improves channel estimation algorithm. Only in the time the trails energy concentrated, the lower energy trail is approximate to zero, so algorithm complexity...
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