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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhou, Enzhi Hao, Li |
| Abstract | The detection problem for the Multipleaccess Spatial modulations (M-SM) is investigated in this paper, where multiple transmitters adopting spatial modulation communicate to the receiver at the same time. The optimal Maximum-likelihood (ML) detection suffers from the high computational complexity, while Sphere decoding (SD) can not reduce the complexity effectively because of the multiple active antennas in M-SM. In order to avoid the high complexity, a Space-alternating generalized expectation-maximization (SAGE) algorithm aided List-projection (S-LP) detector is proposed and applied to M-SM systems. The received signal vector is firstly projected onto the subspaces spanned by the columns of channel matrices corresponding to the possible active antennas. Then some combinations of antenna indices with the largest projections are selected as candidate index sets, based on which, a modified SAGE algorithm is applied to update the candidate symbols. Both analysis and simulation results show that the proposed S-LP detector achieves a near-optimum performance with a significantly reduced complexity compared with ML and SD detection. |
| Starting Page | 172 |
| Ending Page | 178 |
| Page Count | 7 |
| ISSN | 10224653 |
| Volume Number | 26 |
| e-ISSN | 20755597 |
| Issue Number | Issue 1, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/cje/26/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/cje.2016.08.018 |
| Journal | Chinese Journal of Electronics |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights Holder | © Chinese Institute of Electronics |
| Subject Keyword | Active Antenna Array Algebra Antenna Array Antenna Indices Candidate Index Sets Candidate Symbols Channel Matrices Computational Complexity Expectation-maximisation Algorithm M-SM Detection Problem Matrix Algebra Maximum Likelihood Detection ML Detection Modulation Modulation And Coding Method Multi-access System Multiple Access Communication Multiple Active Antenna Multiple Transmitters Multiple-access Spatial Modulation Detection Optimal Maximum-likelihood Detection Received Signal Vector Receiver SAGE S-LP Detector Signal Detection Space-alternating Generalized Expectation-maximization Algorithm Aided List-projection Detector Sphere Decoding Statistics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering |
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