NDLI: Joint recovery of carrier frequency and symbol timing for extremely bandwidth-efficient satellite links

Content Provider	IET Digital Library
Author	Gappmair, Wilfried Plimon, Karin Ebert, Johannes Bergmann, Michael
Abstract	Efficient estimation and synchronisation of transmission parameters is key for any satellite receiver, which is especially true for the recovery of carrier frequency and symbol timing. In this respect, a joint feedback solution has been analysed and tested in some recent work conducted by the authors. However, it turned out that the capture range of the carrier frequency is limited by the selected roll-off factor (excess bandwidth), which means that the synchroniser would not work properly for extremely bandwidth-efficient transmission schemes. This motivated them to modify the feedback structure by introducing a different filter operated in parallel to the receiver matched filter. In the sequel, it could be verified by analytical and simulation results that the initial frequency offset synchronised successfully can reach up to ±50% of the symbol rate irrespective of the selected modulation scheme, the roll-off factor, the signal-to-noise ratio value and the timing offset the satellite link is operated with. On top of that, a non-linear modification of the timing error detector has been investigated in detail, since the output of the conventional solution is nullified in case of extremely small excess bandwidths.
Starting Page	44
Ending Page	51
Page Count	8
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.2017.0186
Journal	IET Communications
Publisher Date	2017-07-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Extremely Bandwidth-efficient Satellite Link Extremely Bandwidth-efficient Transmission Scheme Feedback Structure Filtering Method in Signal Processing Frequency Offset Joint Carrier Frequency-symbol Timing Recovery Joint Feedback Solution Matched Filter Modulation Modulation And Coding Method Modulation Scheme Parameter Estimation Radio Receiver Receiver Matched Filter Roll-off Factor Satellite Communication System Satellite Link Satellite Receiver Signal to Noise Ratio Symbol Rate Synchronisation Timing Error Detector Transmission Parameter Synchronization Estimation
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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