Channel estimation for ambient Internet of things
Passive backscatter based ambient Internet of things (AIoT) was an important development direction for the future of IoT and currently attracted extensive attentions. In practical applications of AIoT, there existed strong self-interference caused by phase noise and spurs, which brought about new ch...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
China InfoCom Media Group
2024-12-01
|
| Series: | 物联网学报 |
| Subjects: | |
| Online Access: | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2024.00404/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832586338270969856 |
|---|---|
| author | WANG Ruoheng DONG Lan LIU Ming WANG Gongpu AI Bo |
| author_facet | WANG Ruoheng DONG Lan LIU Ming WANG Gongpu AI Bo |
| author_sort | WANG Ruoheng |
| collection | DOAJ |
| description | Passive backscatter based ambient Internet of things (AIoT) was an important development direction for the future of IoT and currently attracted extensive attentions. In practical applications of AIoT, there existed strong self-interference caused by phase noise and spurs, which brought about new challenges for channel estimation. Therefore, an iterative channel estimator considering phase noise and spurs were designed for the AIoT system with two nodes. Specifically, the estimator was based on the least squares method and complex exponential basis expansion model (CE-BEM), and used iteration to improve estimation accuracy. The Cramér-Rao lower bound (CRLB) of channel estimation parameters was also derived to evaluate the theoretical limit of the estimation accuracy. Finally, simulation results were provided to corroborate the proposed studies. |
| format | Article |
| id | doaj-art-689d19889b0d4471ac79203a1261ebc1 |
| institution | Kabale University |
| issn | 2096-3750 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | China InfoCom Media Group |
| record_format | Article |
| series | 物联网学报 |
| spelling | doaj-art-689d19889b0d4471ac79203a1261ebc12025-01-25T19:00:27ZzhoChina InfoCom Media Group物联网学报2096-37502024-12-01811011879606247Channel estimation for ambient Internet of thingsWANG RuohengDONG LanLIU MingWANG GongpuAI BoPassive backscatter based ambient Internet of things (AIoT) was an important development direction for the future of IoT and currently attracted extensive attentions. In practical applications of AIoT, there existed strong self-interference caused by phase noise and spurs, which brought about new challenges for channel estimation. Therefore, an iterative channel estimator considering phase noise and spurs were designed for the AIoT system with two nodes. Specifically, the estimator was based on the least squares method and complex exponential basis expansion model (CE-BEM), and used iteration to improve estimation accuracy. The Cramér-Rao lower bound (CRLB) of channel estimation parameters was also derived to evaluate the theoretical limit of the estimation accuracy. Finally, simulation results were provided to corroborate the proposed studies.http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2024.00404/backscatter communicationchannel estimationcomplex exponential basis expansion modelCramér-Rao lower boundinternet of thingsphase noisespurs |
| spellingShingle | WANG Ruoheng DONG Lan LIU Ming WANG Gongpu AI Bo Channel estimation for ambient Internet of things 物联网学报 backscatter communication channel estimation complex exponential basis expansion model Cramér-Rao lower bound internet of things phase noise spurs |
| title | Channel estimation for ambient Internet of things |
| title_full | Channel estimation for ambient Internet of things |
| title_fullStr | Channel estimation for ambient Internet of things |
| title_full_unstemmed | Channel estimation for ambient Internet of things |
| title_short | Channel estimation for ambient Internet of things |
| title_sort | channel estimation for ambient internet of things |
| topic | backscatter communication channel estimation complex exponential basis expansion model Cramér-Rao lower bound internet of things phase noise spurs |
| url | http://www.wlwxb.com.cn/zh/article/doi/10.11959/j.issn.2096-3750.2024.00404/ |
| work_keys_str_mv | AT wangruoheng channelestimationforambientinternetofthings AT donglan channelestimationforambientinternetofthings AT liuming channelestimationforambientinternetofthings AT wanggongpu channelestimationforambientinternetofthings AT aibo channelestimationforambientinternetofthings |