Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme
Generalized spatial modulation (GSM) is a spectral and energy efficient multiple-input multiple-output (MIMO) transmission scheme. It will lead to imperfect detection performance with relatively high computational complexity by directly applying the original QR-decomposition with M algorithm (QRD-M)...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2017/3581592 |
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| author | Xiaorong Jing Mingyue Wang Wei Zhou Hongqing Liu |
| author_facet | Xiaorong Jing Mingyue Wang Wei Zhou Hongqing Liu |
| author_sort | Xiaorong Jing |
| collection | DOAJ |
| description | Generalized spatial modulation (GSM) is a spectral and energy efficient multiple-input multiple-output (MIMO) transmission scheme. It will lead to imperfect detection performance with relatively high computational complexity by directly applying the original QR-decomposition with M algorithm (QRD-M) to the GSM scheme. In this paper an improved QRD-M algorithm is proposed for GSM signal detection, which achieves near-optimal performance but with relatively low complexity. Based on the QRD, the improved algorithm firstly transforms the maximum likelihood (ML) detection of the GSM signals into searching an inverted tree structure. Then, in the searching process of the M branches, the branches corresponding to the illegitimate transmit antenna combinations (TACs) and related to invalid number of active antennas are cut in order to improve the validity of the resultant branches at each level by taking advantage of characteristics of GSM signals. Simulation results show that the improved QRD-M detection algorithm provides similar performance to maximum likelihood (ML) with the reduced computational complexity compared to the original QRD-M algorithm, and the optimal value of parameter M of the improved QRD-M algorithm for detection of the GSM scheme is equal to modulation order plus one. |
| format | Article |
| id | doaj-art-8c990d9a055a480786bcadf3cfe00ba0 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-8c990d9a055a480786bcadf3cfe00ba02025-02-03T07:25:57ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772017-01-01201710.1155/2017/35815923581592Improved QRD-M Detection Algorithm for Generalized Spatial Modulation SchemeXiaorong Jing0Mingyue Wang1Wei Zhou2Hongqing Liu3School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications (CQUPT), Chongqing 400065, ChinaSchool of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications (CQUPT), Chongqing 400065, ChinaSchool of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications (CQUPT), Chongqing 400065, ChinaSchool of Communication and Information Engineering, Chongqing University of Posts and Telecommunications (CQUPT), Chongqing 400065, ChinaGeneralized spatial modulation (GSM) is a spectral and energy efficient multiple-input multiple-output (MIMO) transmission scheme. It will lead to imperfect detection performance with relatively high computational complexity by directly applying the original QR-decomposition with M algorithm (QRD-M) to the GSM scheme. In this paper an improved QRD-M algorithm is proposed for GSM signal detection, which achieves near-optimal performance but with relatively low complexity. Based on the QRD, the improved algorithm firstly transforms the maximum likelihood (ML) detection of the GSM signals into searching an inverted tree structure. Then, in the searching process of the M branches, the branches corresponding to the illegitimate transmit antenna combinations (TACs) and related to invalid number of active antennas are cut in order to improve the validity of the resultant branches at each level by taking advantage of characteristics of GSM signals. Simulation results show that the improved QRD-M detection algorithm provides similar performance to maximum likelihood (ML) with the reduced computational complexity compared to the original QRD-M algorithm, and the optimal value of parameter M of the improved QRD-M algorithm for detection of the GSM scheme is equal to modulation order plus one.http://dx.doi.org/10.1155/2017/3581592 |
| spellingShingle | Xiaorong Jing Mingyue Wang Wei Zhou Hongqing Liu Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme International Journal of Antennas and Propagation |
| title | Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme |
| title_full | Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme |
| title_fullStr | Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme |
| title_full_unstemmed | Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme |
| title_short | Improved QRD-M Detection Algorithm for Generalized Spatial Modulation Scheme |
| title_sort | improved qrd m detection algorithm for generalized spatial modulation scheme |
| url | http://dx.doi.org/10.1155/2017/3581592 |
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