Sparse expression and sensing of fast fading channel for OFDM systems with imperfect carrier synchronization
A sparse expression of fast fading channel and its sensing method were proposed for orthogonal frequency-division multiplexing (OFDM) system of sparse pilot under the condition of imperfect carrier synchronization.First,a sparsified core vector based sparse expression of the generalized channel impu...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Journal on Communications
2013-09-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.09.002/ |
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| Summary: | A sparse expression of fast fading channel and its sensing method were proposed for orthogonal frequency-division multiplexing (OFDM) system of sparse pilot under the condition of imperfect carrier synchronization.First,a sparsified core vector based sparse expression of the generalized channel impulse response (G-CIR) was proposed by deriving compressed sensing model of the sparse pilot system.Then,both the sparsified core vector and G-CIR were reconstructed by orthogonal matching pursuit(OMP).Simulation results demonstrate that the proposed algorithm can effectively reduce the bit error rate (BER) of the OFDM system with imper ect carrier synchronization. |
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| ISSN: | 1000-436X |