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Conference Paper
An Efficient Data-Aided Initial Frequency Synchronizer for DVB-S2
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- Authors
- Jang Woong Park, Myung Hoon Sunwoo, Pan Soo Kim, Dae Ig Chang
- Issue Date
- 2007-10
- Citation
- Workshop on Signal Processing Systems (SiPS) 2007, pp.645-650
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents an efficient initial frequency synchronizer for DVB-S2. An initial frequency offset of the DVB-S2 is around 짹5 MHz, which represents 20% of the symbol rate at 25 Mbaud. To estimate a large initial frequency offset, the algorithm which can provide a large estimation range is required. Through the analysis of the Data-aided (DA) algorithms, we find that the Mengali and Moreli (M&M) algorithm can estimate a large initial frequency offset at low SNR. Based on the algorithm, we propose an efficient initial frequency synchronizer to reduce hardware complexity. The proposed architecture can reduce about 68% multipliers, 55% arctan units and 54% adder/subtractors compared with the direct implementation. The proposed architecture has been thoroughly verified using a FPGA board having the the Xilinx?꽓 Virtex II. ©2007 IEEE.
- KSP Keywords
- DVB-S2, FPGA board, Hardware Complexity, data-aided, frequency offset, low SNR, symbol rate