Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system
A low complexity downlink channel estimation method for high-speed mobile scenarios was proposed for the extra-large scale multiple-input multiple-output (MIMO) orthogonal time-frequency space (OTFS) system.Different from the existing studies, the proposed method considers the significant spatial no...
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| Format: | Article |
| Language: | zho |
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China InfoCom Media Group
2023-12-01
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| Series: | 物联网学报 |
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| Online Access: | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2023.00351/ |
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| author | Xumin PU Kaiyuan DENG Qianbin CHEN |
| author_facet | Xumin PU Kaiyuan DENG Qianbin CHEN |
| author_sort | Xumin PU |
| collection | DOAJ |
| description | A low complexity downlink channel estimation method for high-speed mobile scenarios was proposed for the extra-large scale multiple-input multiple-output (MIMO) orthogonal time-frequency space (OTFS) system.Different from the existing studies, the proposed method considers the significant spatial non-stationary characteristics of extra-large scale MIMO-OTFS system.Based on the visible path region, an enhanced sparse orthogonal matching pursuit (OMP) algorithm with low complexity was proposed, uplink-assisted downlink channel estimation was achieved using the mapping relationship between the uplink and downlink channels in the frequency-division duplex (FDD) mode.Simulation results show that the proposed uplink-assisted downlink channel estimation method can accurately represent the non-stationary of the system, and achieve significant improvement in the channel estimation performance while reducing the computational complexity , and still perform well in high-mobility IoT scenarios. |
| format | Article |
| id | doaj-art-18be1d04612943a082de13412bded7c7 |
| institution | Kabale University |
| issn | 2096-3750 |
| language | zho |
| publishDate | 2023-12-01 |
| publisher | China InfoCom Media Group |
| record_format | Article |
| series | 物联网学报 |
| spelling | doaj-art-18be1d04612943a082de13412bded7c72025-01-15T02:54:17ZzhoChina InfoCom Media Group物联网学报2096-37502023-12-017283859565476Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS systemXumin PUKaiyuan DENGQianbin CHENA low complexity downlink channel estimation method for high-speed mobile scenarios was proposed for the extra-large scale multiple-input multiple-output (MIMO) orthogonal time-frequency space (OTFS) system.Different from the existing studies, the proposed method considers the significant spatial non-stationary characteristics of extra-large scale MIMO-OTFS system.Based on the visible path region, an enhanced sparse orthogonal matching pursuit (OMP) algorithm with low complexity was proposed, uplink-assisted downlink channel estimation was achieved using the mapping relationship between the uplink and downlink channels in the frequency-division duplex (FDD) mode.Simulation results show that the proposed uplink-assisted downlink channel estimation method can accurately represent the non-stationary of the system, and achieve significant improvement in the channel estimation performance while reducing the computational complexity , and still perform well in high-mobility IoT scenarios.http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2023.00351/IoTorthogonal time frequency space modulationextra-large scale MIMOfrequency division duplexchannel estimation |
| spellingShingle | Xumin PU Kaiyuan DENG Qianbin CHEN Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system 物联网学报 IoT orthogonal time frequency space modulation extra-large scale MIMO frequency division duplex channel estimation |
| title | Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system |
| title_full | Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system |
| title_fullStr | Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system |
| title_full_unstemmed | Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system |
| title_short | Uplink assisted downlink channel estimation method of extra-large scale MIMO-OTFS system |
| title_sort | uplink assisted downlink channel estimation method of extra large scale mimo otfs system |
| topic | IoT orthogonal time frequency space modulation extra-large scale MIMO frequency division duplex channel estimation |
| url | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2023.00351/ |
| work_keys_str_mv | AT xuminpu uplinkassisteddownlinkchannelestimationmethodofextralargescalemimootfssystem AT kaiyuandeng uplinkassisteddownlinkchannelestimationmethodofextralargescalemimootfssystem AT qianbinchen uplinkassisteddownlinkchannelestimationmethodofextralargescalemimootfssystem |