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| Content Provider | IET Digital Library |
|---|---|
| Author | Li, Jionghui Xiong, Weiming Sun, Geng Wang, Zhugang Huang, Yonghui Shen, Ming |
| Abstract | High-efficiency satellite-ground downlink data transmission system is being demanded to support increasing volume of data with limited spectrum resource. Considering the dynamic link conditions due to the orbital motion of low Earth orbit (LEO) satellite, variable coding modulated orthogonal frequency division multiplexing (VCM-OFDM) is proposed as an effective way to better exploit link resource. In this study, regarding the relative motion between the satellite on-board transmitter and the ground station receiver, filtered-OFDM signal is designed with adjustable coding modulation sets to achieve higher spectral efficiency and get along with the high-Doppler environment at the same time. Physical layer frame structure is proposed taking the Doppler frequency shift compensation into account with minimum overhead. System performance evaluations prove that transmission throughput in the dynamic communication link can be enhanced significantly by the proposed scheme, which indicates the potential for supporting future gigabit X-band reliable satellite-ground downlink transmissions. |
| Starting Page | 35 |
| Ending Page | 43 |
| Page Count | 9 |
| ISSN | 17518628 |
| Volume Number | 12 |
| e-ISSN | 17518636 |
| Issue Number | Issue 1, Jan (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/12/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0229 |
| Journal | IET Communications |
| Publisher Date | 2017-07-06 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Adjustable CODMOD Code Doppler Frequency Shift Compensation Doppler Shift Doppler-robust High-spectrum-efficiency VCM-OFDM Scheme Dynamic Link Condition Filtered-OFDM Signal Filtering Method in Signal Processing Filtering Theory Future Gigabit X-band Reliable Satellite-ground Downlink Transmissions Ground Station Receiver High-efficiency Satellite-ground Downlink Data Transmission System LEO Satellite Limited Spectrum Resource Low Earth Orbit Satellites Broadband Data Transmission Modulation Coding OFDM Modulation Orbital Motion Physical Layer Frame Structure Radio Receiver Radio Transmitters Satellite Communication System Satellite Ground Stations Satellite Link Satellite On-board Transmitter Spectral Efficiency Variable Coding Modulated Orthogonal Frequency Division Multiplexing |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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