NDLI: OFDM for payload communications of UAS: channel estimation and ICI mitigation

Content Provider	IET Digital Library
Author	Vahidi, Vahid Saberinia, Ebrahim
Abstract	For real-time transmission of high-bandwidth sensor data from an unmanned aircraft vehicle (UAV) to the ground station (GS) in an unmanned aircraft system, a high-speed payload communication system is essential. While orthogonal frequency-division multiplexing (OFDM) is very effective for terrestrial wideband systems, possible higher speed of UAVs or higher carrier frequencies can increase the Doppler shift, and therefore increase the inter-carrier interference (ICI) in OFDM systems. In these scenarios, the complete frequency-domain channel matrix should be estimated and used for ICI mitigation and data recovery. In this study, a time-domain pilot-based channel estimation scheme is described to estimate the entire frequency-domain channel matrix for moderate-to-high Doppler OFDM systems. Simulation results indicate that the new scheme provides better performance compared with channel estimation schemes designed for low Doppler scenarios that partially estimate the frequency-domain channel matrix. The comparison is also presented with the other full channel estimation scheme, named autoregressive scheme, showing a comparable performance with much lower complexity for the new scheme.
Starting Page	2350
Ending Page	2356
Page Count	7
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 15, Oct (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0358
Journal	IET Communications
Publisher Date	2017-08-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adjacent Channel Interference Autonomous Aerial Vehicle Autoregressive Processes Autoregressive Scheme Channel Estimation Communication Channel Equalisation And Identification Complete Frequency-domain Channel Matrix Data Recovery Doppler Shift Electromagnetic Compatibility Frequency Domain Analysis High-speed Payload Communication System ICI Mitigation Interference Interference Suppression Mathematical Analysis Mobile Radio System Moderate-to-high Doppler OFDM System Modulation And Coding Method OFDM OFDM Modulation Orthogonal Frequency-division Multiplexing Real-time High-bandwidth Sensor Data Transmission Statistics Terrestrial Wideband System Time-domain Pilot-based Channel Estimation Scheme UAV Unmanned Aircraft Vehicle Wireless Channel
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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