DocumentCode :
119944
Title :
Adaptive frequency offset estimation for practical satellite communication channels
Author :
Webber, Julian ; Yofune, Masanori ; Yano, Ken´ichi ; Ban, H. ; Kukutsu, Naoya ; Kobayashi, Kaoru
Author_Institution :
Adv. Telecommun. Res. Int., Kyoto, Japan
fYear :
2014
fDate :
16-19 Feb. 2014
Firstpage :
249
Lastpage :
254
Abstract :
We have recently implemented a poly-polarization multiplexing (PPM) system as a hardware prototype in order to demonstrate its high spectral-efficiency in a satellite channel. The Luise and Reggiannini (L&R) algorithm is one of the frequency offset estimation methods suitable for use with the Digital Video Broadcasting - Satellite (DVB-S2) standard, and has also been implemented in our PPM receiver. In order to provide sufficient performance at the lowest SNR of about -2 dB, it is recommended to average the correlation estimates over 2048 frames. In higher SNR regions however, such a large averaging size is unnecessary and by reducing the size, the system can be made more responsive to changes in the channel state. In order to reduce the latency, we propose to measure the average noise power and select an efficient frame averaging length using a look-up-table. We show that the benefits of the proposed adaptive architecture can be extended to short UW lengths through increasing the separation of the UW symbols. Performance results show that the size of the averaging window can be substantially reduced whilst maintaining a target BER.
Keywords :
digital video broadcasting; direct broadcasting by satellite; error statistics; frequency estimation; multiplexing equipment; table lookup; BER; DVB-S2 standard; Luise and Reggiannini algorithm; PPM receiver; PPM system; UW symbols; adaptive frequency offset estimation method; average noise power; digital video broadcasting-satellite; frame averaging length; look-up-table; polypolarization multiplexing system; satellite communication channels; Bit error rate; Correlation; Estimation; Multiplexing; Noise; Table lookup; adaptive algorithm; frequency offset estimation; hardware implementation; latency reduction; performance investigation; polarization multiplexing; satellite communications;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Advanced Communication Technology (ICACT), 2014 16th International Conference on
Conference_Location :
Pyeongchang
Print_ISBN :
978-89-968650-2-5
Type :
conf
DOI :
10.1109/ICACT.2014.6778958
Filename :
6778958
Link To Document :
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