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A novel efficient time domain threshold based sparse channel estimation technique is proposed for orthogonal frequency division multiplexing (OFDM) systems. The proposed method aims to realize effective channel estimation without prior knowledge of channel statistics and noise standard deviation within a comparatively wide range of sparsity. Firstly, classical least squares (LS) method is used to...
The optimal tradeoff among the channel estimation performance, spectrum efficiency and computational complexity has always been one of the major topics for wireless communication system especially OFDM system. Traditional channel estimation methods are usually based on the classical (Least Squares) LS method without considering whether the multipath channel is sparse or rich, therefore, those methods...
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