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An efficient channel estimator for OFDM system with sparse multipath fading |
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| Authors: | Zhang Qingchuan Shu Feng Sun Jintao |
| Institution: | 1. Department of Communication Engineering,Nanjing University of Science and Technology,Nanjing 210094,P.R.China 2. Department of Communication Engineering,Nanjing University of Science and Technology,Nanjing 210094,P.R.China;National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,P.R.China |
| Abstract: | A channel estimator used in sparse multipath fading channel for orthogonal frequency division multi- plexing(OFDM)system is proposed.The dimension of signal subspace can be reduced to improve the performance of channel estimation.The simplified version of original subspace fitting algorithm is em- ployed to derive the sparse multipaths.In order to overcome the difficulty of termination condition,we consider it as a model identification problem and the set of nonzero paths is found under the generalized Akai... |
| Keywords: | channel estimation sparse multipath fading OFDM GAIC |
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