Compressed Sensing based Detection Schemes for Differential Spatial Modulation in Visible Light Communication Systems
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866929494718152704 |
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| author | Shi, Zichun Miao, Pu Chen, Peng Xue, Lei Zheng, Li-Yang Wang, Laiyuan Chen, Gaojie |
| author_facet | Shi, Zichun Miao, Pu Chen, Peng Xue, Lei Zheng, Li-Yang Wang, Laiyuan Chen, Gaojie |
| contents | Differential spatial modulation (DSM) exploits the time dimension to facilitate the differential modulation, which can perfectly avoid the challenge in acquiring of heavily entangled channel state information of visible light communication (VLC) system. However, it has huge search space and high complexity for large number of transmitters. In this paper, a novel vector correction (VC)-based orthogonal matching pursuit (OMP) detection algorithm is proposed to reduce the complexity, which exploits the sparsity and relativity of all transmitters, and then employs a novel correction criterion by correcting the index vectors of the error estimation for improving the demodulation performance. To overcome the local optimum dilemma in the atoms searching, an OMP-assisted genetic algorithm is also proposed to further improve the bit error rate (BER) performance of the VLC-DSM system. Simulation results demonstrate that the proposed schemes can significantly reduce the computational complexity at least by 62.5% while achieving an excellent BER performance as compared with traditional maximum likelihood based receiver. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_06577 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Compressed Sensing based Detection Schemes for Differential Spatial Modulation in Visible Light Communication Systems Shi, Zichun Miao, Pu Chen, Peng Xue, Lei Zheng, Li-Yang Wang, Laiyuan Chen, Gaojie Signal Processing Differential spatial modulation (DSM) exploits the time dimension to facilitate the differential modulation, which can perfectly avoid the challenge in acquiring of heavily entangled channel state information of visible light communication (VLC) system. However, it has huge search space and high complexity for large number of transmitters. In this paper, a novel vector correction (VC)-based orthogonal matching pursuit (OMP) detection algorithm is proposed to reduce the complexity, which exploits the sparsity and relativity of all transmitters, and then employs a novel correction criterion by correcting the index vectors of the error estimation for improving the demodulation performance. To overcome the local optimum dilemma in the atoms searching, an OMP-assisted genetic algorithm is also proposed to further improve the bit error rate (BER) performance of the VLC-DSM system. Simulation results demonstrate that the proposed schemes can significantly reduce the computational complexity at least by 62.5% while achieving an excellent BER performance as compared with traditional maximum likelihood based receiver. |
| title | Compressed Sensing based Detection Schemes for Differential Spatial Modulation in Visible Light Communication Systems |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2409.06577 |