{"title":"一种具有近ml性能的低复杂度检测器用于广义差分空间调制","authors":"Deepak Jose, S. Sameer","doi":"10.1109/SPCOM50965.2020.9179552","DOIUrl":null,"url":null,"abstract":"Detection of most differential modulation schemes involves the past and present received symbols only. Differential spatial modulation (DSM) is a scheme where an extra degree of freedom for transmitting information is available in the form of transmit antennas. A variant of this scheme called generalized differential scheme for spatial modulation (GD-SM) has a power allocation strategy to improve the error performance as compared to DSM. But the maximum likelihood (ML) detector for this scheme is computationally intensive for higher order modulation. We propose a low complexity detection strategy that makes use of the correlation between the channel coefficients during successive time slots to detect the activated antenna followed by the decoding of the M-ary phase shift keying (MPSK) symbol transmitted through that antenna. The proposed detector achieves a tremendous reduction in complexity close to 83% compared to the ML detector, but with a negligible penalty in error performance.","PeriodicalId":208527,"journal":{"name":"2020 International Conference on Signal Processing and Communications (SPCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"A Low Complexity Detector with Near-ML Performance for Generalized Differential Spatial Modulation\",\"authors\":\"Deepak Jose, S. Sameer\",\"doi\":\"10.1109/SPCOM50965.2020.9179552\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Detection of most differential modulation schemes involves the past and present received symbols only. Differential spatial modulation (DSM) is a scheme where an extra degree of freedom for transmitting information is available in the form of transmit antennas. A variant of this scheme called generalized differential scheme for spatial modulation (GD-SM) has a power allocation strategy to improve the error performance as compared to DSM. But the maximum likelihood (ML) detector for this scheme is computationally intensive for higher order modulation. We propose a low complexity detection strategy that makes use of the correlation between the channel coefficients during successive time slots to detect the activated antenna followed by the decoding of the M-ary phase shift keying (MPSK) symbol transmitted through that antenna. The proposed detector achieves a tremendous reduction in complexity close to 83% compared to the ML detector, but with a negligible penalty in error performance.\",\"PeriodicalId\":208527,\"journal\":{\"name\":\"2020 International Conference on Signal Processing and Communications (SPCOM)\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-07-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2020 International Conference on Signal Processing and Communications (SPCOM)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SPCOM50965.2020.9179552\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 International Conference on Signal Processing and Communications (SPCOM)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SPCOM50965.2020.9179552","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A Low Complexity Detector with Near-ML Performance for Generalized Differential Spatial Modulation
Detection of most differential modulation schemes involves the past and present received symbols only. Differential spatial modulation (DSM) is a scheme where an extra degree of freedom for transmitting information is available in the form of transmit antennas. A variant of this scheme called generalized differential scheme for spatial modulation (GD-SM) has a power allocation strategy to improve the error performance as compared to DSM. But the maximum likelihood (ML) detector for this scheme is computationally intensive for higher order modulation. We propose a low complexity detection strategy that makes use of the correlation between the channel coefficients during successive time slots to detect the activated antenna followed by the decoding of the M-ary phase shift keying (MPSK) symbol transmitted through that antenna. The proposed detector achieves a tremendous reduction in complexity close to 83% compared to the ML detector, but with a negligible penalty in error performance.